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Table of ContentsTOC - 1

TECHNICAL SPECIFICATIONS TABLE OF CONTENTS

Section Description Page

DIVISION 1 - GENERAL REQUIREMENTS

01 00 00 Summary of Work 01 00 00-1 thru 4

01 30 00 Submittals 01 30 00-1 thru 3

01 50 00 Construction Facilities and Temporary Controls 01 50 00-1 thru 2

DIVISION 3 - CONCRETE

03 30 00 Cast-in-Place Concrete 03 30 00-1 thru 12

DIVISION 5 - STEEL

05 04 00 Structural Steel 05 04 00-1 thru 11

DIVISION 7 - THERMAL AND MOISTURE PROTECTION

07 92 00 Joint Sealants 07 92 00-1 thru 9

DIVISION 9 - FINISHES

09 89 00 Steel Coating 09 89 00-1 thru 9

WJE No. 2018.4525 Kids Zone Stair Replacement July 5, 2018 Guaranteed Rate Field

Summary of Work01 00 00 - 1

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Kids Zone Stair Replacement Guaranteed Rate Field

DIVISION 1

GENERAL REQUIREMENTS

SECTION 01 00 00

SUMMARY OF WORK

PART 1 GENERAL

1.1 WORK INCLUDED UNDER THE CONTRACT

A. The Work of this Contract is comprised of a Lump Sum Base Bid with unit prices to address deviations (additions or deductions) from the lump sum scope.

B. Contractor's duties:1. Except as specifically noted, provide and pay for:

a. Labor, materials and equipmentb. Tools, construction equipment and machineryc. Water and electricity required for construction beyond the existing utilities in place.

The Contractor may make use of existing lights.d. Other facilities and services necessary for the proper execution and completion of

the Work.2. Secure and pay for, as necessary for the proper execution and completion of the Work,

and as applicable at the time of receipt of the bids:a. Permits, including Building Permitsb. Government feesc. Licenses

3. Give required notices.4. Comply with codes, ordinances, rules, regulations, orders and other legal requirements of

public authorities which bear on the performance of the Work.5. Enforce strict discipline and good order among employees. Do not employ on the Work

unfit persons or persons not skilled in their assigned tasks.

1.2 PRECONSTRUCTION MEETING

A. General: Prior to the start of construction, the Contractor shall meet with the Engineer and the Owner to coordinate the Construction Schedule and to discuss other requirements which may be of concern to any of the parties involved; conditions mutually agreed upon at this meeting may be incorporated into the Contract. When the time and place of the conference is set, the Engineer will notify all interested parties; any party wishing to place a subject on the agenda for the meeting shall notify the Engineer not less than 24 hours prior to time set.

B. Attendance is required of the following:1. Contractor's Superintendent and Project Manger2. Engineer3. Subcontractors4. Others, as appropriate


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C. Engineer will:1. Preside and conduct meeting2. Record, reproduce, and distribute copies of minutes within seven days of meeting to all

meeting participants.

D. Agenda shall include:1. Communications chain and persons authorized to direct changes.2. The Work3. Major subcontractors and tentative construction schedule4. Work sequence, phasing, and occupancy5. Contractor use of premises

a. Office and storage areas.b. Owner's requirements.

6. Special project procedures7. Procedures and processing

a. Application for paymentb. Modification proposal requestsc. Change ordersd. Request for Information (RFI)e. Field decisionsf. Submittalsg. Other

8. Record Documents9. Construction facilities, controls, and construction aids10. Temporary utilities11. Security procedures12. Safety and first-aid procedures13. Housekeeping procedures14. Utility shutdowns15. Parking16. Other

1.3 PROGRESS MEETINGS

A. Contractor's Duties: The Contractor shall perform the following duties:1. General: Schedule and administer construction progress meetings, called meetings, and

pre-installation conferences, throughout the progress of the Work.2. Make physical arrangements, prepare agenda, and distribute notice of each meeting to

participants, including the Engineer, Engineer's representative, Engineers/consultants, and Owner four days in advance of meeting date.

3. Preside at meetings, record minutes, and distribute copies within two days after meeting to participants.

B. Location of Meetings: On-site at the office of the building.

C. Meeting Frequency: Weekly.

D. Attendance: Owner, Engineer, Contractor and job superintendent. Subcontractors, suppliers and consultants to attend as appropriate to agenda.


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E. Minimum Agenda:1. Approval of previous meeting minutes.2. Review of work progress.3. Field observations, problems, and decisions.4. Review of submittals schedule and status of submittals.5. Review of off-site fabrication and delivery schedules.6. Maintenance of quality and work standards.

1.4 CONTRACTOR USE OF PREMISES

A. Confine operations at the Project Site to areas permitted by:1. Law2. Ordinance3. Permits4. Contract Documents

B. Do not unreasonably encumber the Project Site with materials or equipment.

C. The Contractor shall keep corridors, stairways, driveways, walks, parking lot, fire lanes, entrances and exit ways clear and unencumbered at all times.

D. All systems (electrical, mechanical, smoke detection, plumbing, etc.) in the building are to be kept in operation at all times, except when specific permission is made with the Owner to do required Work at a time most convenient to the occupants. This procedure may involve working at night, on Saturday or Sunday, with the length of time of the interruption agreed upon in advance.

E. Take all precautions to protect the building, its occupants, and the public during the construction period.

F. Contractor shall protect the Owner's property and the Work from damage, and shall protect existing finishes, and equipment from damage by Contractor's employees and subcontractors. The Contractor shall repair, restore and replace damaged property and Work as required by the Owner.

G. Assume full responsibility for the protection and safekeeping of products stored on the premises. Construction equipment, shoring, tools, etc., shall not be stored in areas of the Owner’s continued use.

H. Move any stored products which interfere with the operations of the Owner.

I. Obtain and pay for the use of additional storage or work areas needed for operations.


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PART 2 PRODUCTS

REFER TO SPECIFIC TECHNICAL SPECIFICATIONS.

PART 3 EXECUTION

REFER TO SPECIFIC TECHNICAL SPECIFICATIONS.

END OF SECTION

Submittals 01 30 00 - 1

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SECTION 01 30 00

SUBMITTALS

PART 1 GENERAL

1.1 SUMMARY

A. General administrative and procedural requirements for submittals required for performance of the Work.

1.2 TIMING OF SUBMITTALS

A. Submit all data and information required by the Contract Documents to the Engineer allowing ample time for his review, checking for conformance with the design concept, and approval, in any event allowing not less than 15 working days from date of receipt.

1.3 SHOP DRAWINGS, PRODUCT DATA AND SAMPLES

A. General: Except as otherwise specified, submit required shop, layout and setting drawings, product data and samples in accordance with requirements of the General Conditions.

B. Contractor's Review of Submittals: Contractor shall review and approve all submittals before forwarding for Engineer's review.1. The Contractor's mark or stamp of approval shall constitute representation that he has, at

a minimum, satisfied the review requirements of the General Conditions and shall, in effect, so state. The Contractor's stamp of receipt will not be acceptable for this purpose.

2. Submittals which have clearly not been reviewed by the Contractor will not be checked and will be returned to the Contractor for completion of his review. No claim for delay due to Contractor's failure in this regard will be accepted.

3. Any deviation from the Contract Documents shall be clearly identified in the submittal.

C. Engineer's Review of Submittals: The Engineer will review Contractor's submittals for conformance with the design concept and requirements of the Contract Documents in accordance with the General Conditions and will approve or take other appropriate action as indicated by his stamp on the returned submittal.

D. Any item which has been "Approved" or "Approved as Noted" and which is subsequently revised by the Contractor beyond noted corrections shall be resubmitted for review and approval.

E. Partial Submittals: Submittals which are partial or contain only a portion of the data required to describe the item or installation will be rejected unless such partial submittal is coordinated with the Engineer prior to submission, and final approval of all such items will be withheld pending receipt of all required information.

F. Resubmittal: Major deviations from design concepts or from the requirements of the Contract Documents will require complete resubmittal. If resubmittal is required, correct and resubmit in the same form as before.


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G. Shop Drawings: Process and submit required shop drawings required by the technical specifications.1. Contractor's Review: Check and verify field measurements, and coordination

requirements, and incorporate on drawings. Where items portrayed are to connect to or interface with other elements of the structure, drawings shall specifically show such connections or interfaces and the materials involved.

2. Engineer's Review: The Engineer will review for conformance with design concept and requirements of the Contract Documents only and will mark corrections and comments on the transparency and return it to the Contractor. Reproducible and copies will be returned except for copies retained by the Engineer and Owner for use in coordination and administration of the Contract. Distribute copies of the approved submittal as required for the execution of the Work.

H. Product Data: Product data, where required by the Technical Specifications, shall be in the form of catalog cuts, performance characteristics, and/or other descriptive data sufficient for verification of compliance with requirements of the Contract Documents.1. Form and Content of Submittal

a. Manufacturer's standard drawings and other data shall be modified to delete inapplicable information or supplemented to furnish additional information specifically applicable to the Work.

b. Catalog sheets, brochures, diagrams, schedules, performance charts and descriptions, illustrations and other standard descriptive data shall be clearly marked to identify pertinent materials, products, and models and shall include dimensions and clearances required. Product data which is not clearly marked to indicate inapplicable options will be rejected.

2. Engineer's Review: The Engineer will review for conformance with design concept and requirements of the Contract Documents and will return one copy to the Contractor for revision or distribution as required.

I. Samples: Where required by the technical specifications, submit physical examples to illustrate materials, equipment or workmanship and to establish standards by which the Work will be judged.1. Form of Submittal: Submit samples in duplicate; sizes, types and requirements as

specified in the Technical Specification and in as nearly the form in which the material will appear in the Work as practicable, unless otherwise noted. Samples shall show functional characteristics of product or material with integrally related parts and attachment devices, as applicable, and shall show proposed colors and textures or other finishes.

2. Engineer's Review: The Engineer will review the submitted samples for compliance with requirements of the Contract Documents and compare them with file samples where applicable; will make final selection of colors and finishes, and will approve sample for application on the Work. Samples not in accordance with requirements will be returned to the Contractor for resubmittal in conformance with requirements.

3. Disposition of Approved Samples: If approved, sample will be returned to the Contractor as a standard for approval of the completed work, two samples will be retained by the Engineer and Owner for project files.a. Where permitted by the technical specifications, approved samples may be

incorporated into the Work. In such instances, all samples will be returned. Note location of incorporated samples on project record documents prior to installation of sample unit.


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PART 2 PRODUCTS - NOT APPLICABLE

PART 3 EXECUTION - NOT APPLICABLE

END OF SECTION

Construction Facilities and Temporary Controls01 50 00 - 1

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SECTION 01 50 00

CONSTRUCTION FACILITIES AND TEMPORARY CONTROLS

PART 1 GENERAL

1.1 SUMMARY

A. Provide temporary construction, equipment, power and convenience utilities for use, convenience and safety of personnel engaged in the Work of the contract.

1.2 QUALITY ASSURANCE

A. Materials: Construct temporary facilities on site using only new materials, unless otherwise approved by Engineer; make connections of utility lines and services in approved manner and in accordance with Code requirements.

B. Installation: Immediately after receipt of the Notice to Proceed, provide temporary services, utilities and construction for use and convenience of those engaged in the Work of the Project.

1.3 TEMPORARY UTILITIES

A. Electrical Service: Provide fixtures, wiring, and equipment, and make connections required for temporary electrical service during the construction period; coordinate power and lighting requirements with the Owner.

B. First Aid Facilities: Furnish personnel trained and certified in first aid. Provide first aid kits on site; types and quantities as required.

C. Temporary Fire Protection: Provide temporary fire protection as required. Provide minimum of one portable fire extinguisher at each work location.

1.4 GUARDRAILS, CANOPIES AND BARRICADES

A. Guardrails: Provide guardrails as necessary.

B. Canopies: Provide canopies as necessary.

C. Barricades: Provide barricades as may be directed or required for public protection.

1.5 SECURITY

A. Equipment and materials: It is the Contractor's responsibility to furnish security as required for the protection of his equipment and materials.

1.6 PARKING AREAS

A. Parking: To be designated by Owner.

Construction Facilities and Temporary Controls01 50 00 - 2

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1.7 CONSTRUCTION SITE CONTROL

A. General: Confine construction operations and storage to area of site as indicated or as directed; maintain in neat, orderly fashion until completion.

B. Materials and Equipment: Store all equipment and materials neatly when not in use or until installed on the Work in areas set aside for storage; protect from damage. Store new materials off-site as required until the materials are required for use.

C. Trash and Debris Removal: Remove all trash and debris resulting from the Contractor's work from site daily; dispose of at Contractor's expense. Do not allow debris, broken or open cartons, or other refuse to collect in or around the project. At completion of the Work, remove waste materials, rubbish, tools, equipment, machinery, surplus materials.

PART 2 PRODUCTS - NOT APPLICABLE.

PART 3 EXECUTION - NOT APPLICABLE.

END OF SECTION

Cast-in-Place Concrete03 30 00 - 1

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SECTION 03 30 00

CAST-IN-PLACE CONCRETE

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: Supply and placement of cast-in-place concrete, including formwork, concrete materials, mix design, batching procedures, placement procedures, finishes, and curing, for the stair treads and landings.

B. Related Sections:1. Section 01 70 10 - Summary of Work.2. Section 01 33 00 - Submittal Procedures.

1.2 REFERENCES

A. Definitions:1. Cementitious Materials: Portland cement alone or in combination with one or more of fly

ash, silica fume, and other pozzolans, or slag cement.

B. Reference Standards: Latest edition as of Specification date.1. American Concrete Institute (ACI):

a. 117: Specification for Tolerances for Concrete Construction and Materials and Commentary.

b. 301: Specifications for Structural Concrete.c. 305R: Guide to Hot Weather Concreting.d. 306R: Guide to Cold Weather Concreting.e. 347: Guide to Formwork for Concrete.

2. ASTM International:a. C31/C31M: Standard Practice for Making and Curing Concrete Test Specimens in

the Field.b. C33/C33M: Standard Specification for Concrete Aggregates.c. C39/C39M: Standard Test Method for Compressive Strength of Cylindrical

Concrete Specimens.d. C42/C42M: Standard Test Method of Obtaining and Testing Drilled Cores and

Sawed Beams of Concrete.e. C94/C94M: Standard Specification for Ready-Mixed Concrete.f. C143/C143M: Standard Test Method for Slump of Hydraulic-Cement Concrete.g. C150/C150M: Standard Specification for Portland Cement.h. C171: Standard Specification for Sheet Materials for Curing Concrete.i. C172: Standard Practice for Sampling Freshly Mixed Concrete.j. C231/C231M: Standard Test Method for Air Content of Freshly Mixed Concrete by

the Pressure Method.k. C260/C260M: Standard Specification for Air-Entraining Admixtures for Concrete.l. C309: Standard Specification for Liquid Membrane-Forming Compounds for Curing

Concrete.m. C494/C494M: Standard Specification for Chemical Admixtures for Concrete.


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n. C618: Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete.

o. C856: Standard Practice for Petrographic Examination of Hardened Concrete.p. C1064/C1064M: Standard Test Method for Temperature of Freshly Mixed

Hydraulic- Cement Concrete.q. C1152/C1152M: Standard Test Method for Acid-Soluble Chloride in Mortar and

Concrete.r. C1218/C1218M: Standard Test Method for Water-Soluble Chloride in Mortar and

Cement.s. C1260: Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-

Bar Method).t. C1524: Standard Test Method for Water-Extractable Chloride in Aggregate (Soxhlet

Method).u. E1155: Standard Test Method for Determining FF Floor Flatness and FL Floor

Levelness Numbers.

1.3 ADMINISTRATIVE REQUIREMENTS

A. Coordinate Work to ensure that adjacent areas are not adversely affected. Coordinate:1. With Owner’s Representative.2. With other trades:

a. To ensure that work done by other trades is complete and ready to for concrete Work.b. To avoid or minimize work on, or in immediate vicinity of, concrete Work in

progress.c. To ensure that subsequent work will not adversely affect installed concrete.

B. Pre-placement Meeting:1. Conduct meeting at Site.2. Review requirements for concrete Work, including:

a. Construction scheduleb. Availability of materials, personnel, equipment, and facilities needed to make

progress and avoid delays.c. Site use, access, staging, and set-up location limitations.d. Forecast weather conditions.e. Surface preparation and substrate condition.f. Placement procedures.g. Special details.h. Minimum cure period.i. Testing and inspection requirements.j. Temporary protection and repair of damaged concrete.k. Structural loading limitations of deck.

3. Contractor’s Site superintendent, Owner’s Representative, and Architect/Engineer shall attend.

1.4 SUBMITTALS

A. Product Data: Manufacturer’s literature and technical data, including VOC contents, for admixtures, curing compounds, and other products.1. Include Globally Harmonized System (GHS) Safety Data Sheets or, if not yet available,

Material Safety Data Sheets for information only.

B. Design Mixes: For each concrete mixture, include:


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1. Proportions of materials.


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2. Mill tests and certification for cement, fly ash, and slag cement. Certification for silica fume.

3. Sieve analysis for fine and coarse aggregate.4. Test results for deleterious substances in aggregates and potential aggregate reactivity.5. Slump during laboratory tests.6. Air content during laboratory tests.7. Three-, seven-, and 28-day laboratory compression test results. Minimum three cylinders

at each test age.8. Indicate range of high-range, water-reducing admixture dosage that may be added at Site

without adversely affecting hardened concrete. Mix water to be withheld for later addition at Site is not permitted.

C. Field Quality Control: Batch tickets for ready-mix concrete.

D. Contractor Qualifications: Evidence that Contractor’s existing company has minimum five years of continuous experience in similar concrete work; list of at least five representative, successfully-completed projects of similar scope and size, including:1. Project name.2. Owner’s name.3. Owner’s Representative name, address, and telephone number.4. Description of work.5. Types of concrete work.6. Project supervisor.7. Total cost of concrete work and total cost of project.8. Completion date.


A. Contractor Qualifications: Experienced firm that has successfully completed concrete work similar in material, design, and extent to that indicated for the Project. Must have successful construction with specified materials in local area in use for a minimum of five years.1. Employ foreman with minimum five years of experience as foreman on similar projects,

who is fluent in English, to be on Site at all times during the Work. Do not change foremen during the course of the Project except for reasons beyond the control of Contractor; inform Architect/Engineer in advance of any changes.

2. Provide at least one individual who is certified by ACI as Finisher/Technician for type of work being performed, during concrete pours.

B. Ready-Mix Supplier Qualifications: ASTM C94/C94M; Certification of Production Facilities and Delivery Vehicles by National Ready Mixed Concrete Association.

1.6 DELIVERY, STORAGE, AND HANDLING

A. If concrete is to be site-batched:1. Deliver, store, and handle materials according to manufacturer’s recommendations and in

such manner as to prevent damage to materials or structure.2. Deliver materials to Site in original bags and containers with seals unbroken, labeled with

manufacturer’s name, product brand name and type, date of manufacture, lot number, and directions for storing.

3. Keep materials dry and do not allow materials to be exposed to moisture during transportation, storage, handling, or installation. Reject and remove from Site new


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materials which exhibit evidence of moisture during application, or have been exposed to moisture.

4. Store materials in original, undamaged bags or containers in clean, dry, protected location on raised platforms with weather-protective coverings, within temperature range required by manufacturer. Manufacturer’s standard packaging and covering is not considered adequate weather protection.a. Store cement bags on pallets.b. Store fine and coarse aggregates away from normal drainage paths and cover with

canvas or plastic if necessary to keep dry.c. Protect materials from dirt, dust, and other contaminants.

5. Limit stored materials on structures to safe loading capacity of structure at time materials are stored, and to avoid permanent deck deflection.

6. Conspicuously mark damaged or opened bags or containers or bags or containers with contaminated materials, and remove from Site as soon as possible.

1.7 PROJECT CONDITIONS

A. Comply with Owner’s limitations and restrictions for Site use and accessibility.

B. Handle materials in strict accordance with safety requirements required by material manufacturers; GHS or Material Safety Data Sheets; and local, state, and federal rules and regulations. Maintain GHS or Material Safety Data Sheets with materials in storage area and available for ready reference on Site.

PART 2 PRODUCTS

2.1 CONCRETE MATERIALS

A. Source Limitations: Obtain each type or class of cementitious material of same brand from same manufacturer’s plant, each aggregate from one source, and admixtures through one source from single manufacturer.

B. Portland Cement: ASTM C150/C150M, Type I or II. Use only one brand and type of cement for Project.

C. Aggregates: ASTM C33/C33M; from single source with documented record of at least ten years of satisfactory service using similar aggregates and cementitious materials in similar applications and service conditions.1. Coarse aggregate shall be normal-weight crushed stone or gravel, unless otherwise noted.

Fine aggregate shall be natural or manufactured sand. Aggregate particles shall be clean, hard, and angular, of uniform quality, and free from soft, thin elongated pieces, disintegrated stone, dirt, organic, or other injurious materials occurring either free or as a coating. Aggregates shall be supplied from a source approved by the Engineer. Aggregate gradation shall conform to ASTM C33 with the following limitations:a. Minimum percentage of coarse aggregate by weight of total aggregate shall be 55

percent.b. Maximum aggregate size shall be 1/2 in.

2. Alkali Reactivity: Coarse and fine aggregates shall have expansion indicative of innocuous behavior; that is, less than 0.10 percent expansion after 16 days; when tested according to ASTM C1260, or mitigating measures shall be included in concrete mix.


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a. Provide ASTM C1260 test results for aggregates proposed for use, performed within last year.

b. If reported expansion is 0.10% or more at 16 days after casting, use mitigation measures shown to render innocuous results when tested according to ASTM C1260 or provide coarse and fine aggregates from a remote source, with expansion indicative of innocuous behavior when tested according to ASTM C1260. ASTM C1293 procedure may be substituted for ASTM C1260.

D. Water: Potable.

2.2 ADMIXTURES:

A. General: Admixtures certified by manufacturer to contain no more than 0.1 percent chloride ions and to be compatible with other admixtures and cementitious materials. Do not use admixtures containing calcium chloride.1. Air-Entraining Admixture: ASTM C260/C260M.2. Water-Reducing Admixture: ASTM C494/C494M, Type A.3. High-Range, Water-Reducing Admixture: ASTM C494/C494M, Type F.4. Water-Reducing and Accelerating Admixture: ASTM C494/C494M, Type E.5. Water-Reducing and Retarding Admixture: ASTM C494/C494M, Type D.

2.3 CURING MATERIALS

A. Moisture-Retaining Cover: ASTM C171, white burlap-polyethylene sheet.

B. Water: Potable.

2.4 CONCRETE MIXES

A. Prepare design mixes for each type and strength of concrete determined by either laboratory trial mixes or field-test data, according to ACI 301.1. Use qualified independent testing agency for preparing and reporting proposed mix

designs for laboratory trial mix basis.

B. Proportion normal-weight concrete mix as follows:1. 28-day Compressive Strength: 4,000 pounds per square inch.2. Maximum Water-Cementitious Materials Ratio, by weight: 0.45.3. Slump: 4 inches maximum.

a. With High-Range, Water-Reducing Admixture:1) 3 to 5 inch slump prior to adding admixture.2) 8 inches maximum slump after admixture is added.

4. Air Content: Add air-entraining admixture at manufacturer's prescribed rate to result in concrete at point of placement having air content of 4.5 to 7.5 percent, unless otherwise indicated.

5. Mix water to be withheld for later addition at Site is not permitted.6. Admixtures: Use admixtures according to manufacturer's written instructions.

a. Use water-reducing admixture. Alternately use high-range, water-reducing admixture (superplasticizer), as required, for placement and workability.

b. Use retarding admixture when required by high temperatures, low humidity, or other adverse placement conditions.

7. No chlorides shall be intentionally introduced into concrete mix.


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a. In hardened concrete, limit acid-soluble chloride ion content to 0.10 percent by weight of cement when tested according to ASTM C1152/C1152M, or water-soluble chloride ion content to 0.08 percent by weight of cement when tested according to ASTM C1218/C1218M.

b. If hardened concrete exceeds chloride ion limits above, limit water-extractable chloride ion content to 0.08 percent by weight of cement when tested according to ASTM C1524.

c. Provide test results necessary to demonstrate concrete and aggregates do not exceed chloride ion limits, unless waived by Engineer.

PART 3 EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions for compliance with requirements and other conditions affecting the installation or performance of the concrete Work.1. Ensure that work done by other trades is complete and ready for concrete Work.2. Verify that areas and conditions under which concrete Work is to be performed permit

proper and timely completion of Work.3. Notify Engineer in writing of conditions which may adversely affect the installation or

performance of the concrete Work and recommend corrections.4. Do not proceed with concrete Work until adverse conditions have been corrected and

reviewed by Engineer.5. Commencing concrete Work constitutes acceptance of Work surfaces and conditions.

3.2 PROTECTION

A. Take precautions to ensure the safety of people, including building users, passers-by, and workmen, and animals, and protection of property, including adjacent building elements, landscaping, and motor vehicles.

B. Prevent construction debris and other materials from coming into contact with pedestrians, motor vehicles, landscaping, buildings, and other surfaces that could be harmed by such contact.

C. Protect paving and sidewalks, and adjacent building areas from mechanical damage due to scaffolding and other equipment.

D. Limit access to Work areas.

E. Erect temporary protective canopies, as necessary, over walkways and at points of pedestrian and vehicular access that must remain in service during the Work.

F. Assume responsibility for injury to persons or damage to property due to the Work, and remedy at no cost to Owner.

3.3 CONCRETE MIXING

A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to ASTM C94/C94M, and furnish batch ticket information.1. Deliver concrete to Site and place within 90 minutes or before 300 revolutions of mixer

drum, whichever comes first, after introduction of mix water. When air temperature is


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between 85 and 90 degrees F, reduce mixing and delivery time to 75 minutes; when air temperature is above 90 degrees F, reduce mixing and delivery time to 60 minutes. Concrete that exceeds the specified time limits shall be rejected.

2. Do not add water-reducing or high-range, water-reducing admixture indiscriminately to increase slump.

3. Introduce high-range, water-reducing admixture at the Site with additional mixing per the manufacturer’s recommendations.

4. Reject concrete that arrives at the Site with a slump exceeding the maximum specified slump.

B. Site Mixing: Measure, batch, and mix concrete materials and concrete according to ASTM C94/C94M.1. Develop batching and mixing operations so that quality control is assured.2. Designate one or two individuals to batch and mix concrete. Fully instruct these

individuals on batching and mixing procedures. No other persons shall batch or mix concrete without prior notification to Engineer.

3. Maintain accurate mix proportions. Batch materials by weight on the basis of whole bags of cement. Maintain a calibrated scale at the Site during concrete placement operations. Batching by volume is permitted if the weight-volume relationship for each material is verified on a daily basis, and aggregate moisture content is measured at least once daily and aggregate volume is adjusted for bulking.

4. Incorporate admixtures into the mix in the manner recommended by the manufacturer and approved by Engineer. Measure with accuracy of +/-3 percent. Add each admixture separately.

5. Combine and mix ingredients to uniform consistency.6. Mix concrete materials in an appropriate drum-type batch machine mixer.

a. For a mixer capacity of 1 cubic yard or smaller, mix at least 1 1/2 minutes, but not more than five minutes after ingredients are in mixer.

b. For a mixer capacity larger than 1 cubic yard, increase mixing time by 15 seconds for each additional cubic yard.

c. Provide a sufficient number of mixers, including reserve mixers, so that concrete placement operations will proceed uninterrupted and each area is completely cast before concrete achieves initial set.

3.4 CONCRETE PLACEMENT

A. Remove laitance and other surface contaminants from concrete surfaces by sandblast or wire- brush cleaning.

B. Allow Engineer at least 24 hours to observe forms, screed rails or guides, concrete surfaces, reinforcement, and embedments.

C. Before placing concrete, verify the following:1. Installation of formwork, reinforcement, and embedded items is complete.2. Concrete surfaces and forms are clean of frost, ice, mud, debris, and water.3. Forms are thoroughly wetted or oiled.4. Reinforcement is securely tied in place and thoroughly cleaned of ice and other coatings

that may reduce or destroy bond with concrete.5. Required inspections have been performed.6. Equipment for mixing and transporting concrete is clean.7. Vibrators are operational.


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D. Before sampling for testing and placing concrete, water may be added at Site, up to the amount allowed in the design mix.1. Do not add water after adding high-range, water-reducing admixture.

E. Convey concrete from the mixer to the place of deposit in a manner such that no segregation or loss of materials occurs.

F. Deposit concrete:1. Place concrete as near as possible to its final position to avoid segregation due to re-

handling or flowing.2. Do not allow concrete to fall a vertical distance greater than 4 feet from the point of

discharge to the point of deposit.3. Do not allow concrete to disturb or displace reinforcing bars, floor drains, or other

embedments.4. Place concrete at a rate so that the concrete is plastic and flows readily into corners of

forms and into spaces around reinforcing bars.5. Place concrete continuously until the member or section is completed, with no cold joints.6. Dispose of concrete that has partially set prior to placement or that has been contaminated

by foreign material.

G. Consolidate concrete with mechanical vibrating equipment, so that concrete is thoroughly worked around reinforcement and other embedded items and into corners.1. Use internal vibrators with minimum speed of 7,000 vibrations per minute and that are

sufficiently narrow to fit into spaces between reinforcing bars, formwork, and existing concrete. Have extra vibrators at the Site in case a vibrator does not work.

2. Do not use vibrators to transport concrete.3. Insert and withdraw vibrators vertically at uniformly spaced locations no farther apart

than the visible effectiveness of the vibrator, to rapidly penetrate layer being placed and at least 6 inches into preceding layer. Do not insert vibrators into lower concrete layers that have begun to lose plasticity.

4. At each insertion, limit the duration of the vibration to the time necessary to consolidate the concrete without causing mix constituents to segregate.

5. For slabs:a. Strike-off the surface and consolidate the concrete with a vibrating screed, to the

correct elevation.b. Slope surfaces uniformly to drains where required.c. Before excess bleed water appears on the surface, use a bull float, darby, or modified

highway straightedge to form a uniform, planar, open-textured surface. Do not further disturb the surface before starting finishing operations.

H. Cold-Weather Placement: Protect concrete from physical damage or reduced strength due to frost, freezing, or low temperatures. Comply with ACI 306R and as follows.1. When the air temperature has fallen or is expected to fall below 40 degrees F, uniformly

heat water and aggregates before mixing to obtain a concrete mixture temperature of not less than 65 degrees F and not more than 80 degrees F at the point of placement. Mix water and aggregates together before adding cement. Do not add cement if the temperature of the water/aggregate mixture exceeds 70 degrees F.

2. Concrete during the required curing period shall be maintained at a temperature not less than 55 degrees F. Install temporary winter protection / enclosures as required to maintain air temperatures in area of placement above 45 degrees F. Throughout heating period,


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concrete shall be kept moist as specified. The concrete temperature shall be monitored automatically or manually each half-hour during cold weather.

3. Do not use frozen materials or materials containing ice or snow.4. Do not use calcium chloride, salt, or other materials containing antifreeze agents or

chemical accelerators, unless otherwise specified and approved in mix design.

I. Hot-Weather Placement: Protect concrete Work from physical damage or reduced strength due to rapid evaporation or overheating of concrete. Refer to Fig. B1 in ACI 305R for hot-weather conditions that may adversely affect concrete placement, finishing, and curing. Do not allow the temperature of the concrete at the time of placement to exceed 90 degrees F. When hot- weather conditions exist, use one or more of the following procedures:1. Place concrete at night or early in morning.2. Cool ingredients before mixing to maintain the concrete temperature below 90 degrees F

at the time of placement. Chilled mixing water or chopped ice may be used to control the temperature; include the water equivalent of the ice in the mixing water quantity. Use liquid nitrogen to cool the concrete at Contractor's option.

3. Cover steel reinforcement with water-soaked burlap so the steel temperature will not exceed the ambient air temperature immediately before embedding in concrete.

4. Fog-spray forms, steel reinforcement, and subgrade just before placing concrete. Keep the subgrade moisture uniform without standing water, soft spots, or dry areas.

5. Provide windbreaks or sunshades, or both.

3.5 FINISHING

A. Comply with ACI 302.1R recommendations for screeding, re-straightening, and finishing operations for concrete surfaces. Do not wet concrete surfaces or add cement.

B. Trowel Finish:1. After applying the float finish, consolidate the concrete by hand or power-driven trowel.2. Continue troweling passes and restraighten with a modified highway straightedge as

necessary, until the surface is free of trowel marks and uniform in texture and appearance.

3. Finish the surface so that 90 percent of the measured gaps between the concrete surface and an unleveled, freestanding, 5-foot-long straightedge, resting on two high spots and placed anywhere on the surface, do not exceed 1/8 inch, measured in accordance with ACI 117.

C. Trowel and Broom Finish: After applying trowel finish, slightly roughen surface with fine- broom finish.

D. Hot-Weather Conditions: Fog the surface with water if hot, dry, or windy conditions cause moisture loss approaching 0.2 pounds per square foot per hour before or during finishing operations.

3.6 CONCRETE CURING

A. General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures. Maintain concrete above 55 degrees F and in moist condition for at least seven days after placing.

B. Begin curing immediately after finishing concrete. Use moisture-retaining cover.1. Place cover in widest practicable width, with sides and ends lapped at least 12 inches.


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2. Seal sides and ends of cover by holding down with soil, concrete pieces, or some other weight, or by using waterproof tape or adhesive.

3. Immediately repair holes or tears in cover during curing period using cover material and waterproof tape.

4. Re-wet concrete surface at least twice daily as necessary.

C. Adequate protection shall be provided for concrete during freezing or near freezing weather. All concrete materials, reinforcement, forms, filler, and ground with which concrete is to come in contact shall be free of frost, ice, and snow. Whenever air temperature is below 40 degrees F, the minimum temperature of concrete when discharged shall be 65 degrees F, and concrete during the required curing period shall be maintained at a temperature not less than 55 degreesF. Throughout heating period, concrete shall be kept moist as specified. The concrete temperature shall be monitored automatically or manually each half-hour during cold weather.

D. Placement and curing of concrete during hot weather shall be in conformance to the requirements of ACI 305R.

3.7 CONCRETE SURFACE REPAIRS

A. Defective Concrete: Repair defective areas designated by Engineer. Remove and replace concrete that cannot be repaired to Engineer's satisfaction.

B. Surface defects on exposed surfaces include:1. Voids, such as spalls, air bubbles, honeycomb, rock pockets, and form-tie holes, more

than 1/2 inch in any dimension in solid concrete but not less than 1 inch deep.2. Crazing and cracks in excess of 0.01 inch wide, or that penetrate to reinforcement or

completely through section.3. Fins and other projections exceeding 1/2 inch.4. High or low spots that create areas of standing water that are at least 1/2 inch deep and at

least 9 square feet in area.5. Color and texture irregularities, and stains and other discolorations that cannot be

removed by cleaning.

C. Repair defects on concealed surfaces that affect concrete's durability and structural performance as determined by Engineer.

D. As soon as possible, cut out spalls, air bubbles, honeycombs, rock pockets, and voids. Make edges of cuts perpendicular to concrete surface. Clean voids and fill with patching mortar according to the manufacturer’s recommendations. Use polymer- or silica fume-modified, cementitious, non-sag mortar that is specifically intended for this application. Use one of the following or approved equal:1. MasterEmaco N 400 manufactured by BASF Construction Chemicals, LLC.2. SikaTop 123 Plus manufactured by Sika Corporation.

E. Fill cracks with high-molecular-weight methacrylate or low-viscosity methyl methacrylate or epoxy. Use one of the following or approved equal:1. Concrete Protector & Restorer CP&R 5741 Hi Mod Low Odor or 5742LO Low Mod

manufactured by 3M.2. MasterSeal 630 manufactured by BASF Construction Chemicals, LLC.3. SikaPronto 19 TF manufactured by Sika Corporation.


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F. After concrete has gained sufficient strength to be unaffected by grinding, grind off fins, other projections, and high areas.

G. Repair materials and installation not specified above may be used if approved by Engineer.

3.8 FIELD QUALITY CONTROL

A. Submit batch tickets for ready-mix concrete.

B. Testing Agency: Owner will engage a qualified independent testing and inspecting agency to sample materials and perform tests during concrete placement.

C. Provide:1. Access to Work.2. Materials for sampling.3. Site facilities for sampling, testing, and storage of materials.4. Incidental labor.

D. Testing of concrete1. A set of six 6-in. diameter by 12-in. long test cylinders shall be made at a frequency of

once per day, or once for each 20 cubic yards of ready-mixed concrete placed, whichever results in a larger number of tests. Four in. diameter by 8 in. long test cylinders may be substituted when the maximum aggregate size does not exceed ¾ in. or as allowed by ASTM specification.

2. All cylinders shall be made and tested by a qualified approved Testing Agency which meets the requirements of ASTM E329, and their reports will be sent to the Engineer and Contractor. Costs for these tests shall be paid by the Owner, except where specifically indicated otherwise in this Section.

3. Two cylinders from each set shall be tested at seven days, and an additional two cylinders at 28 days, in accordance with ASTM C31. The remaining cylinders shall be laboratory- cured and held in reserve for strength testing beyond 28 days, if necessary and if directed by Engineer. Additional cylinders may be made and tested at the Contractor's expense where it is desired to demonstrate 75 percent of specified 28-day strength earlier than seven days after placement, and where high early strength is expected. All cylinders to be tested earlier than 7 days shall be field-cured in the part of the structure in which the concrete is placed, and shall be removed from the structure not more than 24 hours before the time of the test.

4. The fresh concrete from each truck shall be tested for slump and air content in accordance with ASTM C143 and C231, respectively, and the concrete mix temperature and air temperature shall be measured and recorded.

5. Concrete which fails to meet the slump or air content requirements shall be tested again using a different concrete test sample from the same source. If the second series of tests reveals the concrete does not meet the slump or air content requirements, the nonconforming concrete shall be rejected and properly disposed. A new batch of concrete shall be mixed or obtained at the Contractor's expense.

6. Unless directed otherwise by the Engineer, samples of concrete for test specimens shall be taken from the transport vehicle during discharge.

7. Test specimens shall be molded promptly after the sample is taken and then placed in Project Site storage provided by the Contractor. Storage shall be in a shed, box or other enclosure maintained at a temperature between 60 and 80 deg F. Specimens shall be stored for a minimum of 16 hours prior to removal from the sampling location.

8. Strength of concrete shall be considered satisfactory if:


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a. The average compressive strength results of two 28-day tests in each set of cylinders equals or exceeds the specified 28-day strength, and neither of the 28-day tests results is 500 psi or more below specified 28-day strength; or

b. Compressive strength equals or exceeds the specified 28-day strength for each of two successive cylinder tests made before 28 days. In this case, additional scheduled tests may be waived.

E. Testing of cylinders shall be in accordance with ASTM C39. Each test report shall contain the following information for each set of cylinders:

a. Individual test specimen strength, type of failureb. Slumpc. Air contentd. Concrete and air temperaturee. Specimen numberf. Concrete pour locationg. Date casth. Date testedi. Concrete properties specifiedj. Notice if tests indicate concrete is or is not in conformance with specifications.

F. Should results of cylinder tests, including testing of reserved cylinders after 28 days if directed by Engineer, not meet preceding strength requirements, the Contractor shall submit a revised mix design data for concrete which will conform to the specifications. In the event of failure of test cylinder specimens for any portion of work, the Contractor, at the Contractor's expense, shall have sample cores cut from that portion of structure represented by unsatisfactory test specimens. Three cores shall be taken from each area in question according to ASTM C42. Concrete in the area represented by core tests will be considered structurally adequate if the average of the three cores is equal to at least 85 percent of specified 28-day cylinder strength, and if no single core has a strength less than 75 percent of the 28-day strength. If these strength acceptance criteria are not met by core tests, the Contractor shall remove and replace all questionable areas of concrete at the Contractor's expense.

3.9 CLEANING

A. After completing the concrete Work:1. Clean soiling from adjacent surfaces. Exercise care to avoid scratching or damage to

surfaces.2. Repair surfaces stained, marred, or otherwise damaged during concrete Work.3. Clean up debris and surplus materials and remove from Site.

END OF SECTION

Structural Steel 05 04 00 - 1

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SECTION 05 04 00

STRUCTURAL STEEL

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes fabrication and installation of new metal stair pans and connection to, alteration of, and/or repairs to existing steel elements.

1.2 RELATED SECTIONS:

A. Section 09 89 00 - Steel Coatings

1.3 REFERENCES

A. Definitions:1. AESS: Architecturally exposed structural steel.2. Installer: Used interchangeably for installer or erector.3. SSPC: Procedures in SSPC Painting Manual.4. WPS: Welding Procedure Specification.

B. Reference Standards: Latest edition as of Specification date.1. 2015 Edition of the Chicago Building Code2. American Institute of Steel Construction (AISC):

a. 303: Code of Standard Practice for Steel Buildings and Bridges.b. 360: Specification for Structural Steel Buildings.

3. American Society of Civil Engineers (ASCE)a. ASCE/SEI-7: Minimum Design Loads for Buildings and Other Structures

4. ASTM International (ASTM):a. A36/A36M: Standard Specification for Carbon Structural Steel.b. A123/A123M: Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on

Iron and Steel Products.c. A325: Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi

Minimum Tensile Strength.d. A563: Standard Specification for Carbon and Alloy Steel Nuts.e. A780/A780M: Standard Practice or Repair of Damaged and Uncoated Areas of Hot-

Dip Galvanized Coatingsf. A992/A992M: Standard Specification for Structural Steel Shapes.g. B695: Standard Specification for Coatings of Zinc Mechanically Deposited on Iron

and Steel.h. E94: Standard Guide for Radiographic Examination.i. E164: Standard Practice for Contact Ultrasonic Testing of Weldments.j. E165/E165M: Standard Practice for Liquid Penetrant Examination for General

Industry.k. E709: Standard Guide for Magnetic Particle Testing.l. F436: Standard Specification for Hardened Steel Washers.m. F844: Standard Specifications, Washers, Plain (Flat) Unhardened for General Use.


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n. F959: Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners.

o. F1554: Standard Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength.

p. F1852: Standard Specification for "Twist Off" Type Tension Control Structural Bolt/Nut/Washer Assemblies, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength.

q. F2280: Standard Specification for "Twist Off" Type Tension Control Structural Bolt/Nut/Washer Assemblies, Steel, Heat Treated, 150 ksi Minimum Tensile StrengthF2329: Standard Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners.

r. F2329: Standard Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners.

5. American Welding Society (AWS):a. D1.1/D1.1M: Structural Welding Code - Steel.

6. Research Council on Structural Connections (RCSC) Specification for Structural Joints Using High-Strength Bolts (RCSC Specification).

7. The Society for Protective Coatings (formerly Steel Structures Painting Council, or SSPC):a. SSPC Painting Manual.


A. Preconstruction Meeting: Conduct meeting at Project site.

1.5 SUBMITTALS

A. Product Data and Test Reports:1. Bolts, nuts, and washers.2. Direct-tension indicators.3. Tension-control, high-strength bolt-nut-washer assemblies.4. Stand-alone shop coat. Indicate compliance with requirements.

B. Shop Drawings: Show fabrication and installation details of steel elements, including:1. New metal stair pans and attachment to existing stair stringers shall be designed and shop

drawings reviewed and sealed by an Illinois Licensed Structural Engineer.2. Dimensions, shapes, and material using reference standards such as ASTM properties.3. Details of cuts, connections, splices, camber, openings, and other pertinent data.4. Weld sizes, lengths, and types by standard AWS symbols, including shop or field weld

designation.5. Indicate elements to receive stand-alone shop coat.

C. Certificates:1. Welder Performance Qualification Record (WPQR):

a. Current WPQR (welder certification), qualified in accordance with Clause 4, Qualification, of AWS D1.1/D1.1M, for welders who will perform shop or site welding.

b. WPQR shall be applicable to each WPS that welder will be designated to perform.

D. Metallurgist Report:


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1. Submit weldability analysis of existing steel to determine preheat and electrode requirements for making attachments to existing steel framing.a. Existing steel is to be treated as an unlisted base metal in the context of AWS

D1.1/1.1M unless weldability analysis indicates otherwise.b. Take one sample from each type of existing member to be welded.

2. Include Welding Procedure Specification (WPS) for welds to existing steel with the submitted weldability analysis.

E. Test Reports:1. Material Test Reports: For steel and stainless steel elements; signed by steel manufacturer

certifying compliance with appropriate specification; include physical properties and chemical analysis.

F. Welding Qualification Data:1. Welding Procedure Specification (WPS) for each weld type, process, parameters (i.e.

wire speed, voltage, amperage, etc.), and position, whether prequalified or qualified by testing by AWS D1.1/D1.1M, including the following:a. Certificate of conformance and product information sheet for consumables listed in

the WPS.b. Supplemental welding procedures.

2. Procedure Qualification Record (PQR) of satisfactory certification testing for each non- prequalified welding procedure.

G. Fabricator Qualifications: Evidence that fabricator's existing company has minimum five years of continuous experience in similar steel fabrication work; list of at least five representative, successfully-completed projects of similar scope and size, including:1. Project name.2. Owner's name.3. Owner's Representative name, address, and telephone number.4. Description of work.5. Types of steel fabrication work.6. Project supervisor.7. Total cost of steel fabrication work and total cost of project.8. Completion date.

H. Installer Qualifications: Evidence that installer's existing company has minimum five years of continuous experience in similar steel installation work; list of at least five representative, successfully-completed projects of similar scope and size, including:1. Project name.2. Owner's name.3. Owner's Representative name, address, and telephone number.4. Description of work.5. Types of miscellaneous steel installation work.6. Project supervisor.7. Total cost of miscellaneous steel installation work and total cost of project.8. Completion date.


A. Fabricator Qualification: Experienced firm that has successfully completed steel fabrication work similar in material, design, and extent to that indicated for Project. Must have successful fabrication with specified materials in local area in use for minimum of five years.


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1. Experience in fabricating AESS similar to that indicated for this project.

B. Installer Qualifications: Experienced firm that has successfully completed miscellaneous steel installation work similar in material, design, and extent to that indicated for Project. Must have successful construction with specified materials in local area in use for minimum of five years.1. Employ foreman with minimum five years of experience as foreman on similar projects,

who is fluent in English, to be on Site at all times during the Work. Do not change foremen during the course of the Project except for reasons beyond control of Contractor; inform Engineer in advance of any changes.

2. Experience in completing AESS work similar in material, design, and extent to that indicated for this project.

C. Mockups: Construct mockups to demonstrate fabrication and installation procedures, quality of Work, and aesthetic effects.1. Construct mockups as noted below. Use equipment, materials, and procedures proposed

for use on Project.a. Install new metal stair pan at existing stair stringer.b. Install new supplemental steel reinforcing plate at existing stair stringer.

2. Engineer will observe mockup construction. Notify Engineer and Owner's Representative at least seven (7) days in advance of when mockups will be constructed.

3. Photograph concealed portions of approved mockup before concealing, and retain photographs at Site.

4. If Engineer or Owner's Representative determines mockup does not comply with requirements, modify mockup or construct new mockup until mockup is approved. Remove and replace mockups that are not approved.

5. Coordinate with painting requirements.6. Approved mockups shall be maintained in undisturbed condition throughout Project as

basis for acceptance of completed work and may become part of completed Work if undisturbed at time of Substantial Completion.

7. Do not order materials or proceed with Work until mockups have been approved by Engineer and Owner's Representative.


A. Deliver store, and handle materials to prevent damage to materials or structure.

B. Store elements off ground and spaced with pallets, dunnage, or other supports and spacers. Store to permit easy access for inspection and identification.

C. Store fasteners in protected place. Clean and re-lubricate bolts and nuts that become dry or rusty before use per manufacturer's written recommendations.1. Twist-off-type bolt assemblies (ASTM F1852 and F2280) shall be re-lubricated by the

manufacturer only.

D. Limit stored materials on structures to safe loading capacity of structure at time materials are stored, and to avoid damage or permanent structure deflection.

E. Use special care in handling AESS to prevent twisting or warping. Protect from erosion and deterioration or other visible effects.


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A. Verify existing dimensions and details prior to installation of steel elements. Notify Engineer of conditions found to be different than those indicated in Contract Documents. Engineer will review situation and inform Contractor and Installer of changes.

B. Comply with Owner's limitations and restrictions for Site use and accessibility.

C. Handle and install materials in strict accordance with safety requirements required by local, state, and federal rules and regulations.

1.9 CHANGES IN WORK

A. During rehabilitation work, existing conditions may be encountered which are not known or are at variance with the Contract Documents. Such conditions may interfere with the Work and may consist of damage or deterioration of the substrate or surrounding materials that could jeopardize the integrity or performance of the Work.1. Notify Engineer of conditions that may interfere with proper execution of the Work or

jeopardize integrity or performance of the Work prior to proceeding with the Work.

PART 2 PRODUCTS

2.1 STEEL ELEMENTS

A. W- and WT-Shapes: ASTM A992/A992M.

B. Channels, Angles, M-Shapes, and S-Shapes: ASTM A36/A36M.

C. Plates and Bars: ASTM A36/A36M.

2.2 AUXILIARY MATERIALS

A. Welding Electrodes:1. Mild Steel: Comply with AWS D1.1 Table 3.1 requirements for Group II or higher steel

specifications, and electrodes listed in approved WPSs.

B. High-Strength Bolts: ASTM A325, Type 1, heavy hex, galvanized finish.1. Nuts: ASTM A563, Grade DH, heavy hex, galvanized finish.2. Washers: ASTM F436, Type 1, galvanized finish.3. Direct-tension indicators: ASTM F959, Type 325, plain finish.

C. Zinc-Coated High-Strength Bolts: ASTM A325, Type 1, galvanized, heavy hex.1. Nuts: ASTM A563; Grade DH, galvanized.2. Washers: ASTM F436, Type 1, galvanized.3. Direct-tension indicators: ASTM F959, Type 325, mechanically deposited zinc coated

alone or with baked epoxy-coating.

D. Other Bolts, Nuts, and Washers:1. Nuts: ASTM A563; Grade DH galvanized finish.2. Washers: ASTM F436, Type 1, galvanized finish, or ASTM F844, galvanized finish.

E. Shop Coat: Refer to Specification Section 09 89 00 Steel Coatings.


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F. Galvanizing:1. Hot-Dip Galvanized Finish on Steel Members: Refer to Specification Section 09 89 00

Steel Coatings.2. Galvanized Finish on Bolt, Nuts, and Washers:

a. Hot-dip galvanizing in accordance with ASTM F2329.b. Mechanically deposited zinc coating in accordance with ASTM B695.c. Ship galvanized nuts and high strength bolts together in same container and use as

assembly.

G. Shop painting: Refer to Specification Section 09 89 00 Steel Coatings.

H. FABRICATION

I. Fabricate and assemble in shop to greatest extent possible. Comply with requirements of AISC 303, including tolerances.1. Cut, drill, and punch elements cleanly and accurately.

a. Remove burrs.2. Cutting:

a. Structural Steel: When thermal cutting is necessary, mechanically thermal cut to greatest extent possible. Grind thermally-cut edges to be welded to comply with requirements in AWS D1.1/D1.1M.

3. Grind edges of members to be coated to minimum radius of about 1/32 inch unless otherwise indicated. Members that will be shop coated only do not need to have edges ground.

4. Exposed Elements: Fabricate with accurate angles, surfaces, and straight edges.a. Fabricate seams and other connections that will be exposed to moisture in manner to

exclude moisture. Provide weep holes where moisture may accumulate.b. Remove sharp or rough areas on exposed surfaces.

5. Mark and match-mark pieces for field assembly.

J. Welded Connections, Structural Steel: Comply with AWS D1.1/D1.1M for preheating, required profiles, tolerances, weld appearance, weld quality, and for methods used in correcting welding work.1. Perform welding in accordance with approved WPSs by properly certified welders.2. Remove dirt, grease, oil, and foreign matter by pickling, power brushing, degreasing,

machining, or grinding, prior to welding. To avoid contamination, use only stainless steel tools or wire brushes made of Series 300 stainless steel. Do not use carbon steel cleaning tools.

3. Preheat base metal and maintain interpass temperatures in accordance with AWS D1.1/D1.1M . Do not exceed interpass temperature of 350 degrees F.

4. Perform welding in a manner to:a. Minimize distortion of welded pieces.b. Obtain thorough fusion and required profile without cracking.

5. Remove slag from completed welds, and clean adjacent weld metal by brushing with stainless steel brush or other suitable means.

K. Cleaning: After assembly, including welding:1. Clean and prepare steel surfaces that are to be shop coated according to SSPC-SP 1,

Solvent Cleaning followed by SSPC-SP 3, Power Tool Cleaning.

L. Apply stand-along shop coat by suitable means to a minimum dry film thickness of 1 mil. Do not apply stand-alone shop coat to surfaces to be bolted with slip-critical connections, field


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welded, coated with fire-resistive materials, hot-dipped galvanized, or embedded in concrete or mortar.

M. AESS Fabrications:1. Fabricate and assemble in the shop to the greatest extent possible.2. Verify that weld sizes, fabrication sequence, and equipment used for exposed

architectural elements will limit distortions to within allowable tolerances.3. Locate field joints in assemblies at concealed locations or as approved by the Engineer.

Detail assemblies to minimize field handling and expedite installation.4. Fabricate with exposed surfaces smooth, square, and of surface quality consistent with

approved mockup, if provided. Use special care in handling and shipping.5. In addition to special care used to handle and fabricate, employ the following fabrication

methods:a. Fabricate steel to one half the normal tolerance specified in AISC 303, Section 10.b. Grind welds smooth. Groove welds shall be flush with surfaces within +1/16 inch, -0

inch.c. Where welding is indicated on Drawings, provide continuous welds of uniform size

and profile.d. At welds on far side of exposed surface, grind distortion and marking of steel to

smooth profile.e. Maintain uniform gap of 1/8 inch +/- 1/32 inch at copes, blocks, and joints.f. Fabricate such that piece marks are fully hidden in completed installation or are

made with media that is fully removable after installation.g. Removal mill marks on exposed surfaces.h. Grind edges of sheared, punched, or flame-cut steel to match approved mock-up.i. Distortion of webs, flanges, stems, and angle legs shall be visually acceptable to

Engineer from distance of 20 feet under lighting conditions determined by Engineer.j. Seal weld 3/8-inch-thick closure plates at open ends of hollow structural sections.k. Provide continuous seal welds at angle-to-gusset-plate connections and similar

connections that are exposed to weather.6. Shop Connections:

a. Provide specified bolt type and finish and align bolt heads as indicated on approved shop drawings.

b. Provide welds with appearance and quality consistent with approved mockup. Assemble and weld sections by methods that will maintain alignment of members without warp exceeding specified tolerances.

N. Shop Quality Control1. Testing Agency: Owner will engage a qualified special inspector to verify and inspect

aspects of the steel fabrication and to inspect welds, prior to application of stand-alone shop coat.a. Provide testing agency with access to places where Work is being fabricated or

produced to perform inspections.b. Provide notice to testing agency of fabrication schedule.

2. Welded Connections: Welds will be visually inspected according to AWS D1.1/D1.1M and the requirements of the applicable building code. Acceptance criteria will be in accordance with AWS D1.1/D1.1M.a. Testing, in addition to visual inspection, will be performed on welds so identified in

the tail of the weld symbol or elsewhere on the Drawings, and may be performed elsewhere at the discretion of the inspector. Welds will be tested using one or more of the following procedures, in accordance with AWS D1.1/D1.1M:


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1) ASTM E165/E165M: Liquid penetrant (PT).2) ASTM E709: Magnetic particle (MT).3) ASTM E164 (reference blocks only): Ultrasonic (UT).4) ASTM E94: Radiographic (RT).

3. Correct deficiencies in Work that inspection and testing indicate do not comply with Contract Documents.

PART 3 EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions with Installer for compliance with requirements and other conditions affecting installation or performance of miscellaneous steel elements.1. Verify elevations of bearing surfaces and locations of anchor rods, bearing plates, and

other embedments.2. Ensure that Work done by other trades is complete and ready for steel installation.3. Verify that areas and conditions under which Work is to be performed permit proper and

timely completion of Work.4. Notify Engineer in writing of conditions which may adversely affect installation or

performance of steel elements. Do not proceed with steel installation until adverse conditions have been corrected and reviewed by Engineer. Commencing miscellaneous steel Work constitutes acceptance of Work surfaces and conditions.

3.2 PROTECTION

A. Take precautions to ensure the safety of people, including building users, passers-by, and workmen, and animals, and protection of property, including adjacent building elements, landscaping, and motor vehicles.


C. Protect paving and sidewalk, and adjacent building areas from mechanical damage due to scaffolding and other equipment.


E. Erect temporary protective canopies, as necessary, over walkways and at points of pedestrian and vehicular access that must remain in service during Work.

F. Assume responsibility for injury to persons or damage to property due to Work, and remedy at no cost to Owner.

3.3 INSTALLATION, GENERAL

A. General:1. Install miscellaneous steel elements in accordance with requirements of AISC 303.2. Position steel elements accurately in location, alignment, and elevation indicated; with

edges and surfaces level, plumb, true, and free of rack.a. Maintain erection tolerances specified by AISC 303.b. Perform cutting, drilling, and fitting required to install steel elements.


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3. Provide temporary support for elements during installation to keep elements secure, plumb, and in alignment. Do not remove temporary supports until the installation is complete.

4. Align and adjust various members forming part of the assembly before permanently fastening.a. Before assembly, clean bearing surfaces and other surfaces that will be in permanent

contact with adjacent elements.b. Perform necessary adjustments to compensate for discrepancies in elevations and

alignment.c. Make allowances for difference between temperature at time of installation and

mean temperature when structure is completed and in service.5. Splice members only where indicated on Drawings or shop drawings approved by

Engineer.6. Do not use thermal cutting during installation unless approved by Engineer.7. Do not enlarge holes unless approved by Engineer. If approved, ream holes to enlarge.8. Galvanized Surfaces: Clean areas where galvanizing is damaged or missing and repair

galvanizing in conformance with Specification Section 09 89 00 Steel Coatings.

B. Welded Connections, Structural Steel: Comply with AWS D1.1/D1.1M for preheating, required profiles, tolerances, weld appearance, weld quality, and for methods used in correcting welding work.1. Perform welding in accordance with approved WPSs by properly certified welders. Take

precautions for fire hazards at adjacent construction.2. Remove dirt, grease, oil, and foreign matter by pickling, power brushing, degreasing,

machining, or grinding, prior to welding. To avoid contamination, use only stainless steel tools or wire brushes made of Series 300 stainless steel. Do not use carbon steel cleaning tools.

3. Preheat base metal and maintain interpass temperatures. Do not exceed interpass temperature of 350 degrees F.

4. Perform welding in manner to:a. Minimize distortion of welded pieces.b. Obtain thorough fusion and required profile without cracking.

5. Remove slag from completed welds, and clean adjacent weld metal by brushing with a stainless steel brush or other suitable means.

6. Where existing members are to be welded, shore existing members in accordance with Drawings. Do not heat existing members more than necessary to achieve a satisfactory weld. Place welding work lead as close as possible to weldment being executed.

C. Bolted Connections: Install high-strength bolts according to the RCSC Specification for joint conditions indicated on Drawings. Use snug-tight requirements unless noted otherwise.1. Snug-Tight Joints:

a. Faying surfaces and surfaces adjacent to bolt head and nut shall be free of dirt and other foreign material.

b. Install snug-tight joints such that connected plies are brought into firm contact by the bolts in the joint and bolts have been sufficiently tightened to prevent removal of nuts without the use of a wrench.

2. Pretensioned joints:a. Faying surfaces and surfaces adjacent to bolt head and nut shall be free of dirt and

other foreign material.b. Conduct preinstallation verification per RCSC Specification Section 7 to confirm

suitability of fastener assembly for pretensioned installation and to confirm procedure and proper use of pretensioning method to be used.


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1) A representative sample of not fewer than three complete fastener assemblies of each combination of diameter, length, grade and lot to be use in Work shall be checked at the Site in a tension calibrator to verify that pretensioning method develops pretension that is equal to or greater than that specified.

2) If actual pretension developed in fastener assembly is less than that specified, the cause shall be determined and resolved before fastener assemblies are used in Work.

c. Install pretensioned joints per RCSC Specification Section 8.2 using one of the following methods to develop the minimum bolt pretension specified in RCSC Specification Table 8.1: turn of nut; calibrated wrench; tension-control high-strength bolt-nut-washer assemblies; or direct-tension indicators.

3. Do not reuse the following bolts or assemblies: galvanized ASTM A325 bolts, ASTM A490 bolts, ASTM F1852 assembly, or ASTM F2280 assembly. Plain ASTM A325 bolts may be reused only if approved by Engineer.

D. AESS Fabrications:1. Inspect members upon delivery to Site for twist, kinks, gouges, or other imperfections.

Coordinate remedial action with fabricator prior to installing steel.2. Provide connections for temporary shoring, bracing, and supports only where noted on

approved shop drawings. Make temporary connections not shown on approved shop drawings at locations not exposed to view in final structure, as approved by Engineer. Method of removing erection devices and finishing members shall be approved by Engineer.

3. Handle, lift, and align pieces using padded slings and other protection required to maintain appearance of steel throughout installation process.

4. Engineer will determine acceptability of completed Work based on approved mockups.


A. Testing Agency: Owner will engage a qualified special inspector to verify and inspect aspects of the steel installation and to inspect welds. Welding inspection and welding inspector qualifications shall be in accordance with AWS D1.1/D1.1M.1. Provide testing agency with access to places where Work is being installed to perform

inspections.2. Provide notice to testing agency of installation schedule.

B. Welded Connections: Welds will be visually inspected according to AWS D1.1/D1.1M and the requirements of the applicable building code. Acceptance criteria will be in accordance with AWS D1.1/D1.1M.1. Testing, in addition to visual inspection, will be performed on welds identified in the tail

of the weld symbol or elsewhere on Drawings, and may be performed elsewhere at the discretion of the inspector. Welds will be tested by one or more of the following procedures in accordance with AWS D1.1/D1.1M:a. ASTM E165/E165M: Liquid penetrant (PT).b. ASTM E709: Magnetic particle (MT).c. ASTM E164 (reference blocks only): Ultrasonic (UT).d. ASTM E94: Radiographic (RT).

2. Correct deficiencies in Work that inspection and testing indicate do not comply with Contract Documents.


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C. Correct deficiencies in Work that inspection and testing indicate do not comply with Contract Documents.

D. Bolted Connections: Bolted connections will be inspected and tested according to RCSC Specification Section 9 and the requirements of the applicable building code.1. Prior to the start of Work, verify that fastener components meet the requirements of

RCSC Specification Section 2 and connected plies meet the requirements of RCSC Specification Section 3.

2. Visually verify that connected plies are in firm contact and that washers are used as required in RCSC Specification Section 6.

3. For snug-tight connections verify that bolts have been tightened sufficiently to prevent turning of the nut without the use of a wrench, per RCSC Specification Section 9.1.

4. For pretensioned and slip-critical joints, perform preinstallation verification testing in the presence of the inspector, as required by RCSC Specification Section 8 and inspect installed fasteners per RCSC Specification Section 9.2.

5. For slip-critical joints, prior to assembly verify in the presence of the inspector that faying surfaces meet the requirements of RCSC Specification Section 3.2.2.

E. Correct deficiencies in Work that inspection and testing indicate do not comply with Contract Documents.

3.5 REPAIRS AND PROTECTION

A. Galvanized Surfaces: Clean areas where galvanizing is damaged or missing and repair galvanizing in conformance with Specification Section 09 89 00 Steel Coatings.

B. Touchup Painting: Immediately after installation, clean exposed areas where stand-alone shop coat is damaged or missing and paint with same material used for shop coating. Prepare surfaces in conformance with Specification Section 09 89 00 Steel Coatings.

3.6 CLEANING

A. At the end of each workday, clean the Site and Work areas and place rubbish, empty cans, rags, and other discarded materials in appropriate containers.

B. After completing the miscellaneous steel Work:1. Clean soiling from adjacent surfaces. Exercise care to avoid scratching or damage to

surfaces.2. Repair surfaces stained, marred, or otherwise damaged during miscellaneous steel Work.3. Clean up debris and surplus materials and remove from Site.

END OF SECTION

Joint Sealants 07 92 00 - 1

WJE No. 2018.4525July 5, 2018


SECTION 07 92 00

JOINT SEALANTS

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: Surface preparation and installation of sealant in joints.

1.2 REFERENCES

A. Reference Standards: Latest edition as of Specification date.1. ASTM International:

a. C920: Standard Specification for Elastomeric Joint Sealants.b. C1193: Standard Guide for Use of Joint Sealantsc. C1248: Standard Test Method for Staining of Porous Substrate by Joint Sealants.d. C1521: Standard Practice for Evaluating Adhesion of Installed Weatherproofing

Sealant Joints.


A. Coordinate Work to ensure that adjacent areas are not adversely affected; that new materials and building interior are kept continuously dry; and that continuous, watertight, new sealant installation is provided. Coordinate:1. With Owner’s Representative.2. With other trades:

a. To ensure that work done by other trades is complete and ready for sealant Work.b. To avoid or minimize work on, or in immediate vicinity of, sealant Work in progress.c. To ensure that subsequent work will not adversely affect completed sealant Work.

B. Pre-installation Meeting:1. Conduct meeting at Site.2. Review requirements for sealant Work, including:

a. Construction schedule.b. Availability of materials, Installer’s personnel, equipment, and facilities needed to

make progress and avoid delays.c. Site use, access, staging, and set-up location limitations.d. Forecast weather conditions.e. Surface preparation and substrate condition and pretreatment.f. Installation procedures.g. Special details and condition of other construction that will affect sealant Work.h. Testing and inspection requirements.i. Temporary protection and repairs of sealant Work.j. Government regulations.

3. Contractor’s Site superintendent, sealant manufacturer’s technical representative, sealant Installer, Owner’s Representative, Engineer, and testing agency representative shall attend.


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1.4 SUBMITTALS

A. Product Data: Sealant manufacturer’s literature including written instructions for evaluating, preparing, and treating substrate; technical data including tested physical and performance properties; and installation instructions.1. Include temperature ranges for storage and application of materials, and special cold-

weather application requirements or limitations.2. SpecData sheet for substrate cleaner and substrate primer recommended by sealant

manufacturer for specific substrate surface and conditions.3. Include Globally Harmonized System (GHS) or, if not yet available, Material Safety Data

Sheets for information only.

B. Samples: Sealant manufacturer’s color sample card, either printed or with thin sealant beads, showing range of colors available for each product exposed to view.

C. Manufacturer’s Reports and Certifications:1. Prior to sealant installation, report from sealant manufacturer with results of sealant

compatibility, sealant and substrate staining, and mockup adhesion tests. Report shall:a. State that materials which come into contact with or in close proximity to sealant

have been tested.b. Include sealant manufacturer’s interpretation of test results relative to material

performance, potential staining of sealant and substrates, dirt accumulation of sealant, and dirt runoff from sealant.

c. Include sealant manufacturer’s recommendations for substrate preparation and primer needed to obtain durable adhesion and installation procedures successfully used in mockups and field tests.

2. Product Certificates: For each sealant product, accessory, related products, joint type, and substrate, sealant manufacturers’ written approval of their products’ use for specified conditions; based on mockups and field tests.

D. Installer Qualifications:1. Certificate signed by sealant manufacturer, certifying that Installer complies with

requirements.2. Evidence that Installer’s existing company has minimum five years of continuous

experience in similar sealant work; list of at least five representative, successfully- completed projects of similar scope and size, including:a. Project name.b. Owner’s name.c. Owner’s Representative name, address, and telephone number.d. Description of work.e. Sealant used.f. Project supervisor.g. Total cost of sealant work and total cost of project.h. Completion date.

E. Sample Warranty: Copy of sealant manufacturer’s warranty, stating obligations, remedies, limitations, and exclusions. Submitted with bid.

F. Following completion of the Work:1. Sealant manufacturer’s inspection report of completed sealant installation.2. Completed warranty from sealant manufacturer.3. Completed warranty from Installer.


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A. Installer Qualifications: Experienced firm that has successfully completed sealant work similar in material, design, and extent to that indicated for Project; that is approved, authorized, or licensed by sealant manufacturer to install sealant; and that is eligible to receive sealant manufacturer’s warranty. Must have successful installations of specified materials in local area in use for minimum of five years.1. Employ foreman with minimum five years of experience as foreman on similar projects,

to be on Site at all times during Work. Do not change foremen during the course of the Project except for reasons beyond the control of the Installer; inform Engineer in advance of any changes.

B. Stain Testing: Conduct stain tests according to ASTM C1248 or actual in situ testing, on actual substrate materials with orientation and exposure that replicates finished joint conditions, to verify that sealants will not stain joint substrates.

C. Compatibility Tests: Include sealant and sealers or coatings that may come into contact with sealant following sealant installation.

D. Mockups: Install ten feet of sealant in each type of joint to verify and set quality standards for materials and installation procedures, and to demonstrate aesthetic effects.1. Include each type of backing material, sealant, primer and other related products.2. Mockups shall be accessible or located as indicated by Owner’s Representative.3. Notify Owner’s Representative and Engineer seven days in advance of date when

mockups will be constructed.4. Field-Adhesion Testing: After sealants have cured, perform field-adhesion tests

according to ASTM C1521.a. Conduct tests for each type of sealant and joint substrate, with and without primer.b. Arrange for tests to take place with sealant manufacturer’s technical representative

present.c. Sealants not evidencing adhesive failure from testing, in absence of other indications

of noncompliance with requirements, will be considered satisfactory. Use alternate materials or modify installation procedure, or both, for sealants that fail to adhere to substrates.

5. If Engineer determines mockup does not comply with requirements, modify mockup or construct new mockup until mockup is approved.

6. Mockups, when approved by Owner’s Representative and Engineer, will become standard for Work.

7. Approved mockups may become part of completed Work if undisturbed at time of Substantial Completion.

8. Do not begin joint sealant Work until mockup is accepted by Owner’s Representative and Engineer.


A. Deliver, store, and handle materials according to manufacturer’s recommendations and in such a manner as to prevent damage to materials or structure.

B. Deliver materials to Site in original packages with seals unbroken, labeled with manufacturer’s name, product brand name and type, date of manufacture, lot number, and directions for storing and mixing with other components.


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C. Keep materials dry and do not allow materials to be exposed to moisture during transportation, storage, handling, or installation. Reject and remove from Site new materials which exhibit evidence of moisture during application or which have been exposed to moisture.

D. Store materials in original, undamaged containers and packaging in clean, dry, protected location on raised platforms with weather-protective coverings, within temperature range required by manufacturer. Protect stored materials from direct sunlight. Manufacturer’s standard packaging and covering is not considered adequate weather protection.

E. Limit stored materials on structures to safe loading capacity of structure at time materials are stored, and to avoid permanent deck deflection.

F. Conspicuously mark wet or damaged materials and remove from Site as soon as possible.

G. Remove and replace materials that cannot be applied within stated shelf life.


A. Verify existing dimensions and details prior to start of sealant Work. Notify Engineer of conditions found to be different than those indicated in the Contract Documents. Engineer will review situation and inform Contractor and Installer of changes.

B. Comply with Owner’s limitations and restrictions for Site use and accessibility.

C. Environmental Limitations: Install sealant when existing and forecast weather conditions permit sealant to be installed according to sealant manufacturer’s written instructions and warranty requirements.1. Do not install sealant when ambient or substrate temperatures are below 40 degrees F or

are expected to fall below 40 degrees F in next 12 hours.2. Do not proceed with installation during inclement weather except for temporary work

necessary to protect building interior and installed materials. Remove temporary work and Work that becomes moisture damaged.

D. Handle and install materials in strict accordance with safety requirements required by sealant manufacturer; GHS or Material Safety Data Sheets; and local, state, and federal rules and regulations. Maintain GHS or Material Safety Data Sheets with materials in storage area and available for ready reference on Site.

1.8 CHANGES IN WORK

A. During rehabilitation work, existing conditions may be encountered which are not known or are at variance with the Contract Documents. Such conditions may interfere with the Work and may consist of damage or deterioration of the substrate or surrounding materials that could jeopardize the integrity or performance of the Work.1. Notify Engineer of conditions that may interfere with the proper execution of the Work or

jeopardize the performance of the Work prior to proceeding with the Work.

1.9 WARRANTY

A. Manufacturer’s Warranty:1. Written warranty, signed by sealant manufacturer, including:


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a. Repair or replace sealant that does not comply with requirements; that does not remain watertight; that fails in adhesion, cohesion, or general durability; or that deteriorates in a manner not clearly specified by submitted sealant manufacturer’s data as an inherent quality of the material for the application indicated.

b. Removal and replacement with new bond breaker materials.c. Labor and materials to perform warranty Work.d. Warranty does not include sealant deterioration or failure due to the following.

1) Excessive joint movement caused by structural settlement or errors attributable to design or construction, resulting in stresses in sealant exceeding sealant manufacturer’s written specifications for sealant elongation or compression.

2) Deterioration or failure of sealant due to failure of substrate prepared according to requirements.

3) Mechanical damage caused by individuals, tools, or other outside agents.4) Changes in sealant appearance caused by accumulation of dirt or other

atmospheric contaminants.2. Warranty Period: 10 years from date of Substantial Completion.

B. Installer’s Warranty:1. Completed warranty form at the end of the Section, signed by sealant Installer, including:

a. Repair or replace sealant that does not comply with requirements; that does not remain watertight; that fails in adhesion, cohesion, or general durability; or that deteriorates in a manner not clearly specified by submitted sealant manufacturer’s data as an inherent quality of the material for the application indicated.

b. Removal and replacement with new bond breaker materials.c. Labor and materials to perform warranty Work.d. Warranty does not include sealant deterioration or failure due to the following.

1) Excessive joint movement caused by structural settlement or errors attributable to design or construction, resulting in stresses in sealant exceeding sealant manufacturer’s written specifications for sealant elongation or compression.

2) Deterioration or failure of sealant due to failure of substrate prepared according to requirements.

3) Mechanical damage caused by individuals, tools, or other outside agents.4) Changes in sealant appearance caused by accumulation of dirt or other

atmospheric contaminants.2. Warranty Period: 10 years from date of Substantial Completion.

PART 2 PRODUCTS

2.1 ELASTOMERIC JOINT SEALANTS

A. General:1. Comply with ASTM C920 and other requirements indicated.2. Compatibility: Provide joint sealants, backings, and other related materials that are

compatible with one another and with joint substrates under conditions of service and application, as demonstrated by sealant manufacturer, based on testing on similar projects, mockups and preconstruction testing for Project, and field experience.

3. Select products based on mockups, preconstruction testing, and sealant manufacturer’s previous testing and experience.

4. Source Limitations: Obtain each type of joint sealant through one source from single manufacturer.


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5. Colors of Exposed Joint Sealants: Selected and approved in writing by Owner’s Representative, from sealant manufacturer’s full range.

B. Sealant Type: The sealant shall be a single-component, non-sag, silicone sealant. The following sealant, or an approved equal, shall be used:1. 756 SMS Building Sealant manufactured by Dow Corning Corporation

2.2 AUXILIARY MATERIALS

A. General: Sealant-backer materials, primers, surface cleaners, masking tape, and other materials recommended by sealant manufacturer, that are non-staining and compatible with substrates; based on mockups, preconstruction testing, and sealant manufacturer’s previous testing and experience.

PART 3 EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions with Installer and sealant manufacturer’s representative for compliance with requirements and for other conditions affecting installation or performance of sealant.1. Verify dimensions of sealant joints at Site by field measurement so that proper sealant

profiles will be accurately maintained.2. Ensure that work done by other trades is complete and ready for sealant Work.3. Verify that areas and conditions under which sealant Work is to be performed permit

proper and timely completion of Work.4. Notify Engineer in writing of conditions which may adversely affect installation or

performance of sealant, including joints with widths less than those allowed by sealant manufacturer for applications indicated, and recommend corrections.

5. Do not proceed with sealant Work until adverse conditions have been corrected and reviewed by Engineer.

6. Commencing sealant Work constitutes acceptance of Work surfaces and conditions.

3.2 PROTECTION

A. Take precautions to ensure safety of people, including building users, passers-by, and workmen, and animals, and protection of property, including adjacent building elements, landscaping, and motor vehicles.


C. Protect paving and sidewalks, and adjacent building areas from mechanical damage due to scaffolding and other equipment.


E. Erect temporary protective canopies, as necessary, over walkways and at points of pedestrian and vehicular access that must remain in service during Work.

F. Comply with sealant manufacturer’s written instructions for protecting building and other surfaces against damage from exposure to its products.


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G. Cover adjacent surfaces with materials that are proven to resist sealant.

H. Assume responsibility for injury to persons or damage to property due to Work, and remedy at no cost to Owner.

3.3 SURFACE PREPARATION

A. Remove existing sealant and other foreign material from joints.

B. Repair damaged or deteriorated substrate surfaces according to sealant manufacturer’s written instructions and as approved by Engineer.

C. Clean joint substrates immediately before installing sealant, to comply with sealant manufacturer’s written instructions based on mockups and preconstruction testing.1. Remove from substrate foreign material that could interfere with adhesion of sealant,

including dirt, dust, existing sealant, oil, grease, and surface coatings.2. Provide dry substrate; prevent wetting of substrate prior to sealant installation.3. Clean porous substrates, such as concrete, masonry, stone, wood, by brushing, grinding,

blast-cleaning, mechanical-abrading, or combination of methods to produce clean, sound substrate capable of developing optimum bond with sealant. Remove laitance and form- release agents from concrete. Remove loose particles remaining after cleaning operations by vacuuming or blowing out joints with oil-free, compressed air.

4. Clean nonporous surfaces, such as metal, with chemical cleaners or other means that do not stain, harm substrates, or leave residues capable of interfering with adhesion of sealant.

5. Joints with silicone sealant and preformed sealant seals should generally be masked as subsequent cleanup of spillage and smears may be very difficult.

D. Install masking tape on adjacent surfaces to prevent permanent staining or damage due to contact with sealant or cleaning methods to remove sealant smears. Install masking tape on sides of joints where sealant will be recessed. Remove tape immediately after tooling sealant, without disturbing sealant.

3.4 INSTALLATION OF SEALANT

A. General: Comply with sealant manufacturer’s written installation instructions for products and applications indicated, based on mockups and preconstruction testing.

B. Joint Priming: Prime joint substrates where recommended in writing by sealant manufacturer, based on mockups and preconstruction testing. Apply primer to comply with sealant manufacturer’s written instructions.1. Confine primer to areas of sealant bond; do not allow spillage or migration onto adjoining

surfaces.2. Limit priming to areas that will be covered with sealant in same day. Unless

recommended otherwise by sealant manufacturer, reprime areas exposed for more than 24 hours.

C. Install sealant backer and position to produce cross-sectional shape and proper depth of installed sealant.1. Use properly-sized backer. Do not use multiple-backer units or braided-backer units to

accommodate wide joints.2. Install backer with device that will provide consistent depth between substrate surface

and outer surface of backer.


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3. Do not leave gaps between ends of sealant backers.


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4. Do not stretch, twist, puncture, or tear sealant backers.5. Remove wet backers and replace with dry materials.

D. Install bond-breaker tape at back of designated joints.

E. Install sealant immediately after installing backer material; to produce uniform, cross-sectional shape and depth; to directly contact and fully wet joint sides and backer material; and to completely fill recesses in joint configuration.1. Install sealant flush with surface.2. Immediately after sealant application and before skinning or curing begins, tool joint with

slightly concave surface, compressing sealant into joint to form smooth, uniform sealant bead; to eliminate air pockets; and to ensure contact and adhesion of sealant with sides of joint. Do not use tooling agent.

3. Install sealant slightly below surface.4. Immediately after sealant application and before skinning or curing begins, lightly tool

joint, compressing sealant into joint to form smooth, uniform sealant bead; to eliminate air pockets; and to ensure contact and adhesion of sealant with sides of joint. Do not use tooling agent.

5. Remove excess sealant from surfaces adjacent to joints.


A. At completion of Project, observe installed sealant for damage or deterioration. If damage or deterioration occurs, neatly cut out and remove damaged or deteriorated sealant, prepare and prime surfaces, and install new sealant. Replace sealant immediately so new sealant is indistinguishable from original Work.

B. Field-Adhesion Testing: Engineer will perform non-destructive and destructive field adhesion tests on sealant in accordance with ASTM C1521.1. Non-destructive testing:

a. Depress center of sealant bead with probing tool to depth of 50 percent of bead width, or depress sealant bead near substrate bond-line until it appears visually that sealant is about to fail in cohesion.

b. Record if sealant failed and, if so, if failure was adhesive or cohesive and maximum surface depression as percent of joint width.

c. Perform test every 12 inches for first 10 linear feet of joint; if no test failure is observed, test every 24 inches thereafter.

2. Destructive testing:a. Cut 6-inch-long tail of sealant loose from substrate.b. Mark tail 1 inch from adhesive bond.c. Grasp tail 1 inch from adhesive bond and pull until tail extends to 2x the published

movement capability of sealant. If sealant has not failed, continue pulling to failure.d. Record elongation at failure and if failure was adhesive or cohesive.e. Observe sealant for complete filling of joint with absence of voids, and for joint

configuration in compliance with requirements. Record observations and sealant dimensions

f. Perform test every 100 feet for first 1,000 linear feet of joint; if no test failure at 2x the movement capability occurs, test every 1,000 feet thereafter or approximately once per floor per elevation, whichever is more frequent.

3. Test reports shall include date when sealant was installed, name of person who installed sealant, test date, test location, and whether primer was used.


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4. Immediately after testing, Contractor shall replace failed sealant in test areas. Neatly cut out and remove failed sealant, prepare and prime surfaces, and install new sealant. Ensure that original sealant surfaces are clean and that new sealant contacts original sealant.

5. Sealant not evidencing adhesive failure from testing or noncompliance with requirements will be considered satisfactory.

6. Where Engineer determines that sealant has failed adhesively from testing or does not comply with requirements, additional testing will be performed to determine extent of nonconforming sealant. Neatly cut out and remove non-conforming sealant, prepare and prime surfaces, and install new sealant. Perform field adhesion tests on new sealant. Additional testing and replacement of non-conforming sealant shall be at Contractor’s expense.

3.6 CLEANING

A. As sealant Work progresses, clean off excess sealant or sealant smears by methods and with cleaning materials approved in writing by sealant manufacturer and manufacturers of products in which joints occur. Exercise care to avoid scratching or damage to surfaces.

B. At the end of each workday, clean Site and Work areas and place rubbish, empty cans, rags, and other discarded materials in appropriate containers.

C. After completing sealant Work:1. Repair surfaces stained, marred, or otherwise damaged during sealant Work.2. Clean up debris and surplus materials and remove from Site.

3.7 PROTECTION

A. Protect sealant during and after curing period from contact with contaminating substances and from damage, so sealants are without deterioration or damage at time of Substantial Completion.

END OF SECTION

Steel Coatings 09 89 00 - 1

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SECTION 09 89 00

STEEL COATINGS

PART 1 GENERAL

1.1 DESCRIPTION

A. This work consists of providing the necessary labor, materials, equipment, and supervision to prepare and paint surfaces of the new hot-dip galvanized metal stair pans and existing stair stringers.

1.2 RELATED WORK

A. Section 05 12 00 - Structural Steel

1.3 REFERENCE STANDARDS

A. ASTM International (ASTM)1. ASTM D16 - Terminology Relating to Paint, Varnish, Lacquer, and Related Products2. ASTM D7091 - Standard Method for Nondestructive Measurement of Dry Film

Thickness (DFT) of Nonmagnetic Coatings Applied to a Ferrous Base3. ASTM D1212 - Standard Test for Measurement of Wet Film Thickness of Organic

Coatings4. ASTM A123/A123M - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings

on Iron and Steel Products5. ASTM A143/A143M - Standard Practice for Safeguarding Against Embrittlement of

Hot- Dip Galvanized Structural Steel Products and Procedure for Detecting Embrittlement

6. ASTM A384/A384M - Standard Practice for Safeguarding Against Warpage and Distortion During Hot-Dip Galvanizing of Steel Assemblies

7. ASTM D4417 - Standard Test Methods for Field Measurements of Surface Profile of Blast Cleaned Steel

8. ASTM D6386 - Standard Practice for Preparation of Zinc (Hot-Dip Galvanized) Coated Iron and Steel Product and Hardware Surfaces for Painting

B. The Society for Protective Coatings (SSPC)1. SSPC-PA 1 - Shop, Field, and Maintenance Painting of Steel2. SSPC-PA 2 - Measurement of Dry Coating Thickness with Magnetic Gages3. SSPC-SP 1 - Solvent Cleaning4. SSPC SP 2 - Hand Tool Cleaning5. SSPC SP 3 - Power Tool Cleaning6. SSPC-SP 10/NACE No. 2 - "Near-White Blast Cleaning7. SSPC-SP 11 - Power Tool Cleaning to Bare Metal

1.4 SUBMITTALS

A. The Contractor shall submit the paint manufacturer’s product data for all materials proposed for use. The data shall include a description of the system, and mixing and application instructions.

B. The contractor shall submit samples for each type of coating system (field and shop) and in


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each color and gloss of finish coat to be used on the project.


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1. Coating Samplesa. Step coats on Samples to show each coat required for system.b. Label each coat of each Sample.c. Label each Sample for location and application area

C. The Contractor shall submit his plan for surface preparation and painting.

D. The contractor shall submit the repair procedure for damage, defects, or other nonconforming conditions in the coating for the Engineer’s approval. Repair procedure shall comply with the most stringent requirements of SSPC-PA 1 and the manufacturer’s written recommendations. Repairs to the coating system must result in an acceptable, uniform gloss and color on visible surfaces

E. The contractor shall submit written plan of action for protecting shop coated galvanized steel prior to and during transportation to the project site and during storage at the project site.1. Plan shall include provisions to handle, store, and protect from damage galvanized steel

and coated galvanized steel.2. Plan shall include provisions to prevent deposition of chloride and other contaminants

onto the galvanized steel and the coated galvanized steel.3. Plan shall include provisions to keep galvanized steel and the coated galvanized steel

protected from weather, sunlight, and free from contact with the ground and positioned to minimize water holding pockets, soiling, contamination, and deterioration of the coating and galvanizing

1.5 PAYMENT

A. The Work of this Section shall be performed on a lump sum basis.

1.6 MOCKUPS

A. Mockup:1. Prepare surfaces on one representative existing 6 foot length of railing and stringer and

one metal stair pan.2. Apply new coating system over properly prepared substrate.3. Protect mock-up for reference throughout work. The approved recoating mockup will be

retained as a basis for acceptance of Work.4. Approved mockups shall become part of completed Work if undisturbed at time of

Substantial Completion.

B. Additional mockups shall be made until acceptable results are achieved. Adjustments to application of products shall be made in accordance with limits defined in manufacturer's recommendations upon approval of the Engineer.

C. If the Engineer determines mockup thickness, color/sheen or adhesion to underlying coating layer does not comply with requirements, modify mockup or construct new mockup until mockup is approved. Contractor shall pay for additional mockups and testing requested by Owner. Do not proceed with Work until mockup is approved.

D. Mock-ups shall cure as required by manufacturer prior to testing and evaluation by Engineer.

E. Permit Engineer to perform field adhesion testing of coatings on mock-ups prior to proceeding with overall work. Results of tests will be evaluated to establish a benchmark for quality for the overall coating application.


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F. Coating manufacturer shall review surface preparation and coating mock-ups on site during installation.

G. Approval of mock-ups does not constitute approval of deviations from the Contract Documents contained in mock-ups unless the Engineer specifically approves such deviations in writing.

1.7 DELIVERY, HANDLING, AND STORAGE

A. Materials shall be delivered in their original, unopened containers bearing the manufacturer's name, product identification, and batch number.

B. Coatings, thinners, and cleaners shall be stored in tightly closed containers in a covered, well- ventilated area where they will be protected from exposure to extreme cold or heat, sparks, flame, direct sunlight, or weather.

C. All materials shall be stored in an approved location.


A. Existing Coatings: Currently existing coatings are present on stair stringers.

B. Notify Engineer of conditions found to be different than those indicated in the Contract Documents. Engineer will review situation and inform Contractor and Applicator of any changes.

C. Comply with Owner’s limitations and restrictions for site use and accessibility.

D. Environmental Limitations: Only apply coating when existing and forecast weather conditions permit coating to be applied according to coating manufacturer’s written instructions and warranty requirements.

E. Apply only when substrate and ambient temperatures are within range recommended by coating manufacturer. Maintain minimum substrate and ambient temperatures for at least 24 hours before and after coating application.

F. Do not apply coatings in snow, rain, fog, or mist; when relative humidity exceeds 85 percent; at temperatures less than 5 degrees F above dew point; or when such conditions are imminent during the coating cure of drying period.

G. Do not apply coatings to damp or wet substrate.

H. Allow wet surfaces to dry thoroughly and attain temperature and conditions specified before starting or continuing coating operations.

I. Handle and apply materials in strict accordance with safety requirements required by coating manufacturer; Material Safety Data Sheets; and local, state, and federal rules and regulations. Maintain Material Safety Data Sheets with materials in storage area and make available for ready reference on Site.

J. Maintain adequate ventilation during preparation and application of coating materials.


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1.9 WARRANTY

A. The completed application of the paint coating on the new metal stair pans shall be guaranteed by the manufacturer and the applicator against defects in material and application, for a period of five (5) years from the completion of the application.

B. The completed application of the paint coating on the existing stringers shall be guaranteed by the manufacturer and the applicator against defects in material and application, for a period of one (1) year from the completion of the application.

C. Alternate No. 1: The completed application of the paint coating on the existing stringers that have been cleaned by means of abrasive blasting shall be guaranteed by the manufacturer and the applicator against defects in material and application, for a period of five (5) years from the completion of the application.

PART 2 PRODUCTS

2.1 STEEL COATINGS

A. Material Compatibility:1. Provide materials for use within each coating system that are compatible with one

another and substrates indicated, under conditions of service and application as demonstrated by manufacturer, based on testing and field experience.

2. Provide products of same manufacturer for each coat in coating system.

B. Products1. Existing stair stringers

a. Surface Profile (at bare steel): 1.0 to 1.5 milsb. Primer: Sherwin Williams Macropoxy 646, Fast Cure Epoxy at 2.0 to 4.0 mils DFT

or approved equal.c. Finish: Sherwin Williams Acrolon 218 HS Acrylic Polyurethane at 3.0 to 5.0 mils

DFT or approved equal.2. New hot-dip galvanized metal stair pans

a. Hot-Dip Galvanizing: Galvanize steel components by the hot-dip process according to ASTM A123/A123M. Provide thickness of galvanizing specified in reference standards.1) Safeguard against embrittlement in conformance with ASTM A143.2) Safeguard against warpage in conformance with ASTM A384.3) Galvanize materials in accordance with reference standards and this specification4) Chloride Content Testing: Chlor*test by Chlor-rid International.

b. Surface Profile: 1.0 to 1.5 milsc. Primer: Sherwin Williams Macropoxy 646, Fast Cure Epoxy at 2.0 to 4.0 mils DFT

or approved equald. Finish: Sherwin Williams Acrolon 218 HS Acrylic Polyurethane at 3.0 to 5.0 mils

DFT or approved equal.e. Coating Repairs:

1) Primer (where hot-dip galvanizing has been damaged): Sherwin Williams Zinc Clad III HS Organic Zinc-Rich Epoxy Primer at 3.0 to 5.0 mils DFT or approved equal.

2) Intermediate: Sherwin Williams Macropoxy 646, Fast Cure Epoxy at 2.0 to 4.0 mils DFT or approved equal


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3. Alternate No. 1: Abrasive blasted existing stair stringersa. Surface Profile: 1.5 to 2.0 milsb. Primer: Sherwin Williams Zinc Clad III HS Organic Zinc-Rich Epoxy Primer at 3.0

to 5.0 mils DFT or approved equal.c. Intermediate: Sherwin Williams Macropoxy 646, Fast Cure Epoxy at 4.0 to 6.0 mils

DFT or approved equal.d. Finish: Sherwin Williams Acrolon 218 HS Acrylic Polyurethane at 3.0 to 6.0 mils

DFT or approved equal.

PART 3 EXECUTION

3.1 SURFACE PREPARATION

A. Existing stair railings and stringers1. Prepare and coat all bare, corroded, and damaged coating areas, and areas of poorly

bonded, deteriorated coatings to receive new coating.2. Prepare surfaces in accordance with SSPC SP1

a. Remove all visible oil, grease, soil, drawing and cutting compounds, salts, and other soluble contaminants from surfaces to be painted.

3. Where existing coating is missing, damaged or deboned, prepare the repair areas in accordance with SSPC SP11 to produce a profile of 1.0 to 1.5 mils measured in accordance with ASTM D4417 Method B. Remove damaged, debonded, deteriorated, and poorly bonded existing-coatings back to tightly adherent coating. Operate the power tool in a manner that prevents damage to the surface and the formation of burrs, sharp ridges, gouges, and sharp cuts. Avoid excessive pressure, dwell times, and burnishing of the surface. Avoid the use of tools that may perforate the steel. Grinders are not preferred for preparation of the steel to SSPC SP11 and should be avoided to the extent possible. Tools such as MBX Bristle Blaster or 3M Clean and Strip are preferred for preparation.a. Feather back the edge of existing coating for a smooth transition into non-affected,

tightly adhered coating.4. Prepare the surfaces of all existing coatings which are intact and well adhered to receive

new coating. Thoroughly, uniformly, and completely roughen the surface of all of the existing coated surfaces that are to be overcoated using 80 to 100 grit sandpaper in accordance with SSPC-SP2 or SP3 (Hand or Power Tool Cleaning).

5. Remove all dust, paint residue, and other debris from surfaces to be painted with a commercial grade vacuum cleaner with a brush type cleaning tool. Surfaces shall be free of all dust, paint residue, and other debris immediately prior to coating application.a. Apply the first coat of the coating system after inspection, before oxidation of the

prepared bare steel surface occurs and in a timely fashion before contaminants become deposited on surfaces scheduled to receive coatings. Only prepare enough surface area that can meet the surface preparation requirements and be coated within 8 hours. Re- prepare non-compliant surfaces.

B. New hot-dip galvanized metal stair pans1. Hot-Dip Galvanizing

a. Prepare parts to be hot-dip galvanized according to ASTM A123/A123M.b. Galvanizing shall provide an acceptable substrate for applied coatings. No chromate

or water quenching for any portion of galvanized steel to receive paint coating.2. Shop Coating


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a. Remove sharp, protruding defects in the galvanized surface, including but not limited to raised edges and holes, using suitable tools. Remove all protruding defects that can lead to coating holidays.

b. Remove deposits of zinc reaction by-products, such as wet storage stain, by methods of SSPC SP 16 Appendix A, Paragraph A3.

c. Remove all visible oil, grease, soil, drawing and cutting compounds, and other soluble contaminants from galvanized surfaces in accordance with SSPC SP1 using a neutral pH cleaner/degreaser approved by the coating manufacturer and designed to remove dirts, oils, and greases.1) Before the cleaning solution dries on the surface, thoroughly pressure wash

surfaces with a stand-off distance of not more than 6 inches at 3,000 to 5,000 psi to remove water soluble contaminants and rinse all cleaned surfaces

2) When the washing is completed, the cleaned surfaces shall be free of dust, dirt, oil and grease, animal waste, salts, and other debris.

3) Repeat degreasing and pressure washing until surface salts are reduced to the coating manufacturer’s maximum permissible surface chloride concentration and free of dust, dirt, oil and grease, animal waste, and other debris

4) Allow surfaces to completely dry, including crevices, before proceeding with remainder of the surface preparation.

d. Sweep-blast (brush-blast) galvanized surfaces in accordance with 5.4.1 of ASTM D6386 and the applicable portions of SSPC-SP7.1) The sweep-blast shall be relatively light (relative to sweep-blasting of steel) so

as not remove excessive amounts of zinc from the galvanized surface.2) The sweep-blast shall remove zinc oxides and other surface contaminants from

the galvanizing as well as profile the surface3) The sweep-blast shall impart to the galvanized surface an anchor profile of 1.0 to

1.5 mils and the peak density should be sufficiently dense to provide a uniform appearance. All of the original galvanized surface shall be profiled. Perform the sweep-blast in a manner that does not result in debonding and flaking (leafing) of the galvanizing. To achieve the desired profile with minimal galvanizing loss and to mitigate damage to galvanized surface, reduce blast pressures (relative to abrasive blasting of steel), angle the blast (30 to 45 degrees to the surface), increase blast distances, and/or select suitable abrasive.

4) The thickness of the galvanizing shall be measured before and after sweep-blast cleaning using measurement techniques described in SSPC-PA 2 to confirm that that the galvanizing still conforms to ASTM A123. Members containing areas of insufficient galvanizing thickness shall be rejected.a) Determine chloride content on prepared surfaces using Chlor*test by

Chlor- rid International. If chloride contamination is greater than the manufacturer’s maximum permissible surface chloride concentration, pressure wash surface at 3,000 to 5,000 psi. Repeat as necessary to achieve recommended chloride levels prior to installation.

b) Notify the Engineer of surfaces where the Chlor*test cannot be properly and adequately applied. The Engineer will provide an alternate procedure with an appropriate factor (multiplier) to be used for the different test method(s).

e. Remove all abrasive and dust residue from galvanized steel surfaces. Galvanizing shall not be permitted to become wet or damp after cleaning. Control environmental conditions and apply specified primer after Inspector’s examination, and within one hour of preparation, and before oxidation of the surface that could limit adhesion occurs. Only prepare enough surface area that can meet the surface preparation


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requirements and be coated before oxidation of the surface that could limit adhesion occurs. Re-prepare non-compliant surfaces

f. Shop painting shall be conducted in an Enclosed Shop facility as defined in AISC- 420-10/SSPC-QP3

g. Shop coated galvanized steel delivered to construction site.1) Examine surfaces for damage.2) Damage to more than 1 percent of the surface area is cause for rejection.3) The Engineer shall have final authority concerning the coating’s uniformity and

acceptable appearance.4) Transfer and install members in a manner that will not damage galvanizing and

applied coatings.5) Coating damaged during transportation or handling shall be touched up and

restored in accordance with the approved procedure to be submitted for review and approval.

6) Chloride removal procedure for galvanized steela) If chloride contamination is greater than manufacturer’s maximum

allowable surface chloride concentration thoroughly pressure wash surfaces with a stand-off distance of not less more than 6 inches at 3,000 to 5,000 psi and allow to fully dry prior to installation

b) Repeat as necessary to achieve recommended chloride levels prior to erection.

c) Notify the Engineer of surfaces where the Surface Chloride Test Kit cannot be properly and adequately applied. The Engineer will provide an alternate procedure with an appropriate factor (multiplier) to be used for the different test method(s).

3. Repair of damaged hot-dip galvanized coating in the field due to physical damage from handling, installation or weld-through or delamination or other defects in galvanizing layer.a. Surface Preparation

1) Remove debonded galvanizing and coatings and feather back edges to firm, intact galvanizing and coating.

2) Remove all visible oil, grease, soil, drawing and cutting compounds, and other soluble contaminants from galvanized surfaces in accordance with SSPC SP1 using an alkaline cleaner/degreaser approved by the coating manufacturer and designed to remove dirts, oils, and greases. Before the cleaning solution dries on the surface, thoroughly pressure wash surfaces with a stand-off distance of not less than 6 inches at 3,000 to 5,000 psi to remove water soluble contaminants and rinse all cleaned surfaces. When the washing is completed, the cleaned surfaces shall be free of dust, dirt, oil and grease, animal waste, salts, and other debris.

3) Determine surface chloride concentration on pressure washed surfaces. If chloride contamination is greater than the manufacturer’s maximum permissible surface chloride concentration perform the Chloride Removal Procedure for Galvanized Steel and repeat until surface salts are reduced to specified levels and surfaces are free of dust, dirt, oil and grease, animal waste, and other debris.

4) Before proceeding with the remainder of the surface preparation, allow surfaces to completely dry, including crevices. Proceed with surface preparation in a timely manner before chlorides or other contaminants can be re-deposited on the surface.

5) Prepare damaged surfaces in accordance with 5.4.2 of ASTM D6386 and the applicable portions of SSPC SP11 (do not use powered grinder or sander) to


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produce a profile of 1.0 to 1.5 mils and the peak density should be sufficiently


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dense to provide a uniform appearance. All of the original galvanized surface shall be profiled and surfaces shall be uniformly dull. Where the galvanizing has been damaged down to bare steel, transition the surface preparation from steel to coated galvanized steel allowing a minimum of two inches of transition onto the galvanized surface. Feather the edges of the shop-coating.

b. Remove all dust, grinding dust, paint residue, and other debris from surfaces to be painted.

c. Galvanizing shall not be permitted to become wet or damp after cleaning.d. Apply primer after Inspector’s examination of prepared surfaces, and within one

hour of preparation, and before oxidation of the surface that could limit adhesion occurs. Re-prepare non-compliant surfaces.1) Apply the coating repair primer only to properly prepared bare metal surfaces;

do not overlap onto existing coatings2) Apply the intermediate and finish coats

e. Apply the coatings in a manner as to achieve complete and thorough coverage of the surface and all irregularities

C. Alternate No. 1: Abrasive Blasting of existing stair stringers1. Grind smooth all fins, tears, slivers, previous welds, and burred or sharp edges and corners.2. Remove grease, oil, dirt, and other surface contaminants from areas to be painted, in

accordance with SSPC-SP 1, prior to abrasive blast cleaning.3. Remove existing coatings by preparing the surface, including welds, in accordance with

SSPC SP10. Thoroughly clean any pitted areas; maintain blast angle at 90 degrees to the surface for maximum cleaning efficiency. SSPC-Vis-1 shall be used as a guide to judge the cleanliness of abrasive blasted steel surfacesa. Determine chloride content on prepared surfaces, including prepared welds in

accordance with the quality assurance section. Use Surface Chloride Test Kit in accordance with the manufacturer’s directions to determine chloride content on prepared surfaces. If chloride contamination is greater than the manufacturer’s maximum permissible surface chloride concentration, remove chloride salts according to the Chloride Removal Procedure for Abrasive Blasted Surfaces.

b. Chloride Removal Procedure for Abrasive Blasted Steel Surfaces1) If chloride contamination is greater than Manufacturer’s Maximum Permissible

Surface Chloride Concentration, abrasive-blast surface preparation procedures shall be reapplied to the non-compliant area. Repeat as necessary to achieve the manufacturer recommended chloride threshold prior to coating.

2) If chloride contamination greater than manufacturer’s recommendations persist, pressure wash surface at 3,000 to 5,000 psi with clean potable water. Repeat pressure washing as necessary to achieve recommended chloride levels. Do not use water sources with unacceptable chloride content that increase surface chloride contamination. Upon completion of pressure washing, prepare surfaces to SSPC SP10.

3) If chloride contamination greater than manufacturer’s recommendations persist after pressure washing, include Salt Remover in the clean potable water in accordance with the Salt Remover manufacturer’s directions and pressure wash surface at 3,000 to 5,000 psi. Repeat as necessary to achieve recommended chloride levels. Do not use water sources with unacceptable chloride content that increase surface chloride contamination. Remove flash rusting by abrasive blasting. Upon completion of pressure washing, re-prepare surfaces to SSPC SP10


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4. At transition between new coatings and existing coatings at termination or work area, remove existing and new coatings to the degree necessary to feather-back edges to provide a smooth transition between new and existing coatings and prepare the exposed bare metal surfaces in accordance with SSPC SP11. Only grind or sand surfaces of new and existing coatings where all dirt, oil, grease, and salt (i.e. where maximum allowable surface chloride content is not exceeded) have been removed by pressure washing surface at 3,000 to 5,000 psi with clean potable water and allowed to fully dry.

5. Remove all abrasive, dust, and paint residue from steel surfaces with commercial grade vacuum cleaner with a brush-type cleaning tool. Surfaces shall be compliant with ISO 8502-3 Level 1 or better.

6. Prime surfaces after the Inspector’s examination and before oxidation of the surface occur. Re-prepare non-compliant surfaces. Only prepare enough surface area that can meet the surface preparation requirements and be coated in the same 8 - 10 hour shift.

3.2 APPLICATON

A. General1. Apply coatings according to manufacturer's written instructions.2. Use applicators and techniques suited for coating and substrate indicated.

B. Field applied coatings1. Apply coatings by spray, brush or roll as specified by the manufacturer.

C. Shop applied coatings1. Apply by spray in accordance with manufacturer’s instructions.2. Coating system application shall be pinhole-free. If test confirms the presence of

pinholes, repair pinholes according to the approved pinhole repair procedure and retest.3. Pinhole Repair Procedure - In accordance with manufacturer's written instructions.4. Brush apply stripe coat at welds, bolt-holes, edges, and corners with the primer following

installation.

D. Follow manufacturer's written instructions for maximum and minimum recoat times for all coatings.

E. Surface preparation and painting operations shall be sequenced so that freshly applied coatings will not be contaminated by dust or other foreign matter.

F. Apply coatings to produce surface films without cloudiness, spotting, holidays, laps, brush marks, runs, sags, ropiness, or other surface imperfections. Produce sharp glass lines and color breaks.

G. Damaged Coating Repair Procedure - In accordance with manufacturer's written instructions.

3.3 CLEAN-UP

A. The Contractor is responsible for inspecting all completed work, identifying any defects and performing touch-up work where necessary.

B. Upon completion of the work, the equipment, surplus materials, and rubbish shall be removed and the site shall be left in a clean condition.

END OF SECTION

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