Mechanical - Spec

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SECTION 15010 -BASIC MECHANICAL REQUIREMENT

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BASIC MECHANICAL REQUIREMENT

SECTION 15010

PART 1 - GENERAL

1.01 SUMMARY

A. This section generally specifies administrative and procedure requirements regardingMechanical Work. Additional requirements are specified in various sections of

Division 15 and also may be required during the execution work due to project

conditions.

B. The requirements of this Section do not supersede or take precedence over any

provision of the General Conditions and Supplementary General Conditions, and

should any discrepancy become apparent between these requirements and the General

Conditions and Supplementary General Conditions, the Contractor shall notify the

Engineer in writing, and the Engineer shall interpret and decide such matters in

accordance with the applicable provisions of the General Conditions and

Supplementary General Conditions.

1.02 EXTENT OF WORK

The Contractor shall supply all labor, materials, equipment, tools, appurtenances,

storage, services and temporary work, necessary to completely install, in accordance

with these specifications and the drawings.

Work, materials, equipment or services not specifically mentioned in other clauses of

these specifications or elsewhere, or indicated on the drawings but found necessary for

the completion and perfect functioning of the installations must be included in the

Contractor’s price.

The work shall include also operation of the installations after completion andacceptance including maintenance and guarantee of the works as described hereinafter.

The work shall be designed and carried out in accordance with the contract drawings

and specifications as well as the standards of the country of origin.

The following builder’s work shall be considered as part of this work:

i. Concrete foundations and pads under pumps, chillers and other equipment.

ii. All Builders’ work in connection with fixing support, hangers, anchors, etc.

iii. Cutting or forming all openings, mortar, chase, etc., in floors, walls and ceilingsrequired for the installation and making good after.

iv. Painting items of equipment and exposed pipes and supports.

v. Labeling.


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1.03 SYSTEM DESCRIPTION

A. Division 15 of this specification covers the supply and installation of the mechanical

and Air Conditioning services as shown on the design drawings and in this

specification.

B. To balance, adjust and test heating and chilled water systems, air moving equipment,

air distribution, exhaust air systems and other systems as herein specified.

C. It shall be clearly understood that these specifications and design drawings are

complimentary documents, intended for the selection of equipment having the general

and specific characteristics as detailed in the documents.

D. Unless otherwise specifically stated, the mechanical installation shall be complete,

ready for operation and fully integrated and coordinated with all other building items.

E. Materials and methods included in this Section are of a general nature, and apply to

most systems and installations in this Contract. Refer to individual system sections for

materials and methods specifically required for the respective systems.

F. The systems described include the following:

1. Ventilation and Air Conditioning.

2. Water Treatment.

3. Domestic and Specialized Water

4. Fire Services.

5. Liquid Petroleum Gas (LPG).

6. Automatic Controls.

7. Underground Drainage.

8. Sanitary Soil and Waste Drainage.

9. Rain Water Drainage.

G. Air-conditioning equipment capacities are based on the following conditions:

1. Outdoor Temperatures

In Summer 46°C Dry Bulb temperature.

35.1°C Wet bulb temperature.

In Winter 7.2°C Dry bulb temperature.

2. Indoor Temperatures

Unless other wise noted on drawing and in this book of specifications the indoorroom conditions are:

In summer

- Indoor areas 23±1°C Dry bulb temperature.

50±5% Relative humidity.


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In winter, 20°C Dry bulb temperature.

1.04 QUALITY ASSURANCE

A. Materials and equipment shall conform to the latest edition of reference specifications

specified herein and to applicable codes and requirements of local authorities having jurisdiction.

1. Mechanical equipment shall conform to the latest version of ASHRAE Standard.

2. Reference Standards

a. Provide materials and equipment listed by Underwriters’ Laboratories, Inc. except

in those cases where an Underwriters’ Laboratories listing is not available.

b. Comply with the latest applicable standards of the following:

1) ASME American Society of Engineers.2) ARI Air-conditions and Refrigeration Institute.

3) ANSI - American National Standards Institute.

4) ASTM - American Society of Testing Materials.

5) AMCA - Air- moving and Conditioning Association.

6) AGA American Gas Association.

7) NEMA National Electrical Manufacturers Association.

8) AWS American welding Society.

9) NFPA National Fire Protection Association.

10) BS British Standards.

11) SMACNA Sheet Metal and Air-conditioning Contractors.

12) DIN Deutsches Institute for Normalisierung

13) FM Factory Matual.14) IRR Institute of Boiler and radiator Manufacturers.

15) ISO International Standardization organization.

16) Local Standards (SBC…)

1.05 SUBMITTALS

A. Definitions: The required submittals of this division, in addition to the definitions of

the General Conditions, and elsewhere in the contract documents, are further

categorized for convenience as follows:

1. Product data shall include manufacturer’s latest standard printed literature such as

manufacturer’s installation instructions, catalog cuts, color charts, roughingdiagrams, wiring diagrams and performance curves on materials, equipment and

systems for this project. Product data shall include references to applicable

specification section and item number. Product data shall be provided in addition to

the required shop drawing submittals.

2. Shop drawings shall be submitted to the Engineer for Approval as described

hereinafter.


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3. Samples shall include physical examples of materials in complete units for visual

inspection. Samples shall indicate applicable specification section number and item

numbers within that section.

4. Certificates shall include statements of applicability, certifying reports from

governing and testing agencies, industry standards and applicable certificates

specified in each Section of the specifications.

5. Test and inspection reports shall include reports specified in each section of the

specifications.

6. Miscellaneous submittals shall include submittals related directly to the work (non-

administrative) including warranties, maintenance agreements, workmanship

bonds, reports, and physical work records, copies of industry standards, record

drawings, field measurement data and similar information applicable to the work

and not processed as shop drawings, product data, samples or certificates.

7. No equipment or materials are to be purchased or delivered to site until the

required submittals have been approved.

1.06 INTENT

The purpose of the shop drawings and specification is to provide an approach for

intended complete installations, finished, fully adjusted, tested commissioned and put

in perfect operating condition. The spirit as well as the letter of the drawings and

specification shall be followed, and all work shall be executed according to the true

intent and meaning of the drawings and specifications.

1.07 DISCREPANCIES AND OMISSIONS

It is the responsibility of the Contractor, to inform the Engineer of any discrepancies in

the drawings and specifications before signing the Contract, default of which will makehim responsible for any errors or omissions in the drawings and specifications even

though these have been approved by the Engineer.

All costs incurred by any changes or alterations necessitated by any errors or omissions

shall be on the Contractor’s own expense without having the right to ask the employer

for any indemnity.

1.08 ENGINEER'S DRAWINGS

The Engineer's drawings are generally diagrammatic and include general layouts andtypical details of the various systems to be installed. No deviations from the drawings

shall be made without receipt of prior written approval from the Engineer.

The drawings shall not be scaled. The Contractor shall base all measurements both

horizontal and vertical from established bench marks. All work shall agree with these

established lines and levels. All measurements shall be verified on Site and checked asto correctness of same as related to the work.


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The Contractor shall check all Architectural, Structural and Electrical drawings in

laying out work for verifying the adequacy of space in which work will be installed.

Maximum headroom and space conditions shall be maintained all points. Where head

room or space conditions appear inadequate the Engineer shall be notified before

proceeding with installation.

1.09 SHOP AND INSTALLATION DRAWINGS

Prior to starting the work the Contractor shall submit to the Engineer for approval

detailed shop and installation drawings showing to scale dimensions of equipment,

pipes, etc. in plan and elevation with clearances and relation of same to the space

assigned. Minimum scale of shop drawings shall be 1/50.

Where the work will be installed in close proximity to, or will interfere with the work

of other trades, the Contractor shall coordinate space conditions to make a satisfactory

adjustment. The Contractor shall prepare composite installation drawings and sections

to a suitable scale of not less than 1/50, clearly showing how work will be installed in

relation with work of other trades.

Prior to submissions of the drawings and approximately 30 days after award of theContract, The Contractor shall submit lists of all equipment and materials with the

names of proposed manufactures. Lists shall show submission dates. The drawings will

not be accepted prior to submission of such lists. Drawings of interrelated items shall

be submitted at approximately the same time.

Drawings of equipment and material shall include detailed manufacturer’s drawings,

cuts of catalogues and descriptive literature, showing specifications, type, performance

characteristics, construction, component parts, dimensions, size arrangements,

operating clearance, capacity, electrical characteristics, power requirements, motor,

drive and testing information. Data of a general nature will not be accepted.

Catalogues, pamphlets or manufacturer’s drawings submitted for approval shall beclearly marked in ink for proper identification of the item being proposed.

Deviations from the specifications and drawings shall be indicated clearly with the

reason for each deviation.

All submissions for approval shall be furnished in three copies and submitted

sufficiently in advance of requirements to allow the Engineer ample time for checking

and approving. Failure of the Contractor to submit the drawing in ample advance time

shall not entitle him to an extension of contract time, and no claim for extension by

reason of such default will be allowed.

The Engineer shall have 21 days to answer any submittal either shop drawing or

material submittal. Any resubmital shall entitle the Engineer to an additional of 14days.

No equipment or material shall be purchased, delivered to the site or installed until the

contractor has in his possession the approved drawings for the particular equipment or

material.

Approval rendered on drawings shall not relieve the Contractor from his responsibility

to provide equipment and material to meet the performance and quality standards as


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indicated on the drawings and as described in the specification or to be of physical size

to fit the space assigned for it.

Material not covered by drawings such as pipe, fitting and incidentals shall be

submitted for approval in letter form giving ratings and names of manufacturers.

During the progress of the work, drawings shall be submitted as required by the

Engineer and as specified elsewhere in this specification. These drawings shallcomprise but not necessarily be limited to concrete bases for equipment with location

of anchors bolts, manufacturers certified installation drawings and instructions,

certified performance characteristics of equipment, wiring diagrams of motor

controllers and control systems, etc.

Where required by the Engineer the Contractor shall submit for approval samples of

material to be used and workmanship proposed. The Contractor shall not use material

or workmanship that does not correspond to the approved samples.

1.10 COORDINATION WITH OTHER TRADES

The Contractor shall plan and coordinate the work with all other trades in advance ofrequirements and shall provide all necessary resources to ensure compliance with the

construction program. Contractor shall submit to the Engineer a set of composite

coordination drawings in plans and sections with minimum scale of 1/50.

The Contractor shall coordinate the space requirements of all other trades involved and

shall be responsible for the sufficiency of the size of shafts and chases and adequate

clearance in double partitions, hung ceilings, etc. for the proper installation of the work.

The Contractor shall give full cooperation to all other trades to permit the work of the

trades to be installed satisfactorily and with the least possible interference or delay.

The Contractor shall furnish to other trades, as required, all necessary templates, patterns, setting plans and shop details for the proper installation and coordination of

adjacent work.

The Contractor shall undertake to make, without extra charge, minor changes and

modifications in the layout as needed to prevent conflict with work of other trades or

for proper execution of the work.

Any extra coast incurred by lack of coordination on the part of the Contractor shall be

at his own expense.

1.11 RECORD DRAWINGS

The Contractor shall submit to the Engineer for record a complete set of as-builtdrawings including three sets of soft copies on CAD 2004 and electrical wiring

diagrams, in tracing or other reproducible form reflecting all the changes made from

the original drawings during the progress of the work. The drawings and electrical

wiring diagrams shall show all labeled equipment, valves, controls, instruments and

electrical devices.


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1.12 INSTRUCTION MANUALS AND SPARE PARTS LISTS

The Contractor shall furnish four copies of an instruction manual bound in booklet

form containing the following information:

Brief description of every system and equipment with basic operating features.

Descriptive literature of all equipment and components with manufacturer’s name,model number, capacity rating and operating characteristic.

Service manual for every major piece of equipment giving operating and maintenance

instructions, starting and shutdown instructions, lubrication instructions and possible

breakdown and repairs, the service manual shall be prepared specially by the

manufacturer for the particular equipment.

Manufacturer’s list of general spare parts for every piece of equipment with unit prices.

Manufacturer’s list of recommended spare parts for one year of operation for every

piece of equipment with unit prices.

Detailed and simplified one line, color coded flow diagrams of every system with tag

number, location and function of each valve and instrument.

The instruction manual shall be submitted in draft form to the Engineer for his review

and approval as to the fulfillment of the specified requirements prior to final issue.

The instruction manual shall be submitted to the Engineer at least four weeks in

advance of the complete date of the system to be available for the final inspection prior

to acceptance of the respective systems.

1.13 DELIVERY, STORAGE AND HANDLING

Deliver products to the project properly identified with name, model number, types,

grades, compliance labels and other information needed for identification.

1.14 EQUIPMENT AND MATERIAL QUALITY WORKMANSHIP

All equipment and material provided by the Contractor shall be new, free from defects

and of the same type, standard and quality as set forth in the specification.

Equipment and material of similar application shall be of the same manufacturer

unless otherwise specified.

All workmanship shall be of the highest standards of the industry, of acceptedengineering practice and to the entire satisfaction of the Engineer. Poor workmanship

shall be rejected and the work reinstalled when in the judgment of the Engineer, the

workmanship is not of the highest quality.

1.15 SUBSTITUTION OF EQUIPMENT AND MATERIAL

Reference in the drawings and specifications to any equipment or material by name,

make or catalogue number, as well as any list of approved manufacturers, shall be


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interpreted as establishing a standard of quality and performance and shall not in any

way be construed as an intention to eliminate the products of other manufacturers and

suppliers having approved equivalent products.

Approval of a manufacturer does not necessarily constitute approval of his equipment

as equal to those specified. After award of Contract and before start of construction, the

Contractor shall submit for the approval of the Engineer a complete summary of

proposed equivalent to be furnished indicating service, manufacturer, figure number,type and pressure rating.

The Tender shall be based on the trade name and catalogue reference named in the

specification and products of the approved manufacturers. Should the Contractor wish

to use any equipment, material or products other than those specified, he should so state

as an alternative to the Tender, naming the proposed substitutions and indicating what

difference, if any, will be made to the Contract, price and detailing all differences

entailed by the substitution.

All the times the Engineer shall be the only judge of equality between the proposed

alternative and the item specified. No alternative shall be implemented without the

written approval of the Engineer.

Where the Contractor proposes to use equipment other than that specified or indicated

which requires any redesign of the structure, partitions, foundations, piping, wiring or

any other part of the works, all such redesign, new drawings and detailing required

shall be prepared by the Contractor at his own expense. All additional costs resulting

from such substitution if approved by the Engineer in writing shall be paid by the

Contractor.

Where such approved substitution requires a different quantity or arrangement of

piping, wiring, conduit and equipment from that specified or shown on the drawings,

the Contractor shall provide all such piping, structural supports, installation,

controllers, motors, starters, electrical wiring and conduits and any other additionalequipment required by the system, at no additional cost to the Employer.

1.16 PROTECTION

The Contractor shall order all equipment from the manufacturer specifying adequate

packing for export at the factory to avoid damage during shipment to the Site.

The Contractor shall be responsible for safe storage and the adequate protection of all

material and equipment until finally installed, tested and accepted.

He shall protect work against theft, injury or damage and shall carefully store material

and equipment received on Site in their original crates or containers until they areinstalled. This responsibility shall embrace any delay pending final testing of systems

and equipment due to any condition.

The Contractor shall close open ends of work with temporary covers or plugs during

construction and storage to prevent entry of obstructing material.

The Contractor shall coordinate the protection of the work of all trades and shall be

liable for any damage sustained to other trades resulting from his work.


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If any equipment is damaged during shipment be before it is tested and accepted, the

Contractor shall replace or repair the equipment depending on the extent of damage and

as determined and decided by the Engineer, on the Contractor’s own account and

without additional cost to the Employer.

1.17 ACCESSIBILITY

Contractor shall be responsible for determining in advance of purchase that equipment

and materials proposed for installation shall fit into the confines indicated areas,

allowing adequate space for maintenance.

All work shall be installed so as to be readily accessible for operation, maintenance and

repair. Deviations from the drawings may be made to accomplish this, after the written

approval of the Engineer.

Concealed valves and devices shall be grouped together in as practical a way as

possible in order to be accessible through access doors.

1.18 ACCESS DOORS

The Contractor shall arrange for access doors and frames to be provided for easy

access to concealed equipment, controls, valves, traps, vents, drains, cleanout and other

devices that require periodic operation, inspection or maintenance.

However, the dimensions and locations of access doors shall be the responsibility of the

Contractor and shall have the approval of the Engineer before the work is installed.

Requirements of access doors shall be submitted in sufficient advance time to be

installed in the normal course of the work.

The Contractor shall be responsible for the correct identification of access doors bymeans of buttons, tabs or markers to indicate the location of concealed work. The

method and schedule for identification of access doors shall be approved by the

Engineer.

1.19 NAMEPLATES

Each piece of equipment provided shall carry, at a conspicuous location, attached in a

permanent manner to the equipment at the factory, a certified nameplate on which shall

be printed or stamped clearly the name and address of the manufacturer, the equipment

model number, serial number, date of manufacture, Electrical characteristics,

performance rating or duty, pressure, temperature or other limitations and all other

pertinent data as deemed necessary by the manufacturer for any future reference to theequipment.

1.20 LABELING

The Contractor shall label and identify all equipment, instruments, controls, electrical

devices, valves, etc. as to duty, service or function.


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Labels on equipment shall be of laminated bakelite with black surface and white core,

with incised lettering nomenclature written in English.

Labels shall be attached to equipment, instruments, controls, electrical devices, etc. or

to adjacent permanent surfaces, in an approved permanent manner.

The Contractor shall submit to the Engineer for his approval prior to installation a

schedule of all equipment and devices to be labeled and the suggested nomenclature.

Controls and electrical devices shall be labeled to indicate clearly which equipment

they control.

1.21 GUARANTEE

All works are to be guaranteed for a period of one year dated from the final acceptance

of the work by the Owner.

Repairs or replacements made under the guarantee shall bear an additional one year

guarantee dated from the final acceptance of the repair or replacement.

Provide complete warranty information for each item to include product or equipment,

date of beginning of warranty or bond, duration of warranty or bond, and names,

addresses, and telephone numbers and procedures for filling a claim and obtaining

warranty services.

The guarantee is to cover perfect mechanical operation of systems, acceptable noise

and vibration levels, reasonable consumption of power, fuel and water, and perfect

attainment of temperatures and humidity within specified design conditions for HVAC

systems.

If during the guarantee period any equipment or material proves defective or any part

of a system fails to function properly, equipment is to be replaced and defects andmalfunctions corrected as directed by the Engineer.

If during the guarantee period any piece of equipment is replaced or rebuilt, the

guarantee period for this equipment is to be extended for a new period equal to the

original guarantee period.

During the guarantee period, provide necessary skills and labor to assure proper

operation and to provide regular and preventive maintenance for equipment and

controls, on a continuous 24 hour basis.

Act promptly to correct problems arising in operation of equipment or system.

Provide Owner with monthly inspection certificates of equipment, record findings on a

check list and certify that each piece of equipment has been examined, is operating as

intended and has been properly maintained as recommended by manufacturer.

Check all controls monthly to ascertain that they function as designed.

Spare parts for normal wear and tear during guarantee period are to be provided by

Contractor.


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PART 2 - EXECUTION

2.01 EXAMINATION

A. Examine conditions at the job site where Mechanical Work is to be performed to insure

proper arrangement and fit of the work. Start of work implies acceptance of job siteconditions.

2.02 PREPARATION

A. The Engineer’s drawings issued with these specifications show the approximate

location of mechanical apparatus, the exact locations are subject to the approval of the

Engineer.

2.03 INSTALLATION

A. Sequence, coordinate and integrate the various elements of mechanical systems,

materials and equipment. Comply with the following requirements.

B. Coordinate mechanical systems, equipment and material installation with other

building components.

C. Verify dimensions by field measurements.

D. Arrange for chases, slots and openings in other building components during progress of

construction, to allow for electrical installations.

E. Coordinate the installation of required supporting devices and sleeves to be set in

poured-in-place concrete and other structural components, as they are constructed.

F. Sequence, coordinate and integrate installations of mechanical materials and equipment

for efficient flow of the Work. Give particular attention to large equipment requiring

positioning prior to closing in the building.

G. Where mounting heights are not detailed or dimensioned, install systems, material, and

equipment to provide the maximum headroom possible.

H. Coordinate connection of mechanical systems with exterior underground and overhead

utilities and services. Comply with requirements of governing regulations, franchised

service companies and controlling agencies. Provide required connection for each

service.

I. Install systems materials and equipment to conform with approved submittal data,

including coordination drawings, to greatest extent possible. Conform to arrangements

indicated by the Contract Documents, recognizing that portions of the work are shown

only in diagrammatic form. Where coordination requirements conflict with individual

system requirements, refer conflict to the Engineer.


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J. Install systems, materials and equipment level and plumb, parallel; and perpendicular

to the other building systems and components, where installed exposed in finished

spaces.

K. Install mechanical equipment to facilitate servicing, maintenance and repair or

replacement of equipment components. As much as practical, connect equipment for

ease of disconnecting, with minimum of interference with other installations.

L. Install access panels or doors where units are concealed behind finished surfaces.

Access panels and doors are specified in Section 15050 - “Basic Mechanical Materials

and Methods” .

M. Install systems, materials and equipment giving right-of-way priority to systems

required to be installed at a specified slope.

N. Painting

1. Follow manufacturer’s recommendations for surface preparation and application

procedures for paints and finishes.

2. Thoroughly clean surfaces requiring prime painting of rust, loose scale, oil, greaseand dirt by the use of wire brushes, solvent and other required means.

3. Do not paint on damp or frosty surfaces or during wet, foggy or freezing weather.

4. Spread and brush paint evenly to eliminate drips, runs or sagging.

5. Fill voids, open or hollow places and irregularities with compound.

6. Thoroughly clean and retouch damaged or dirtied shop coat surfaces.

7. Do not paint controls, nameplates or labels.

8. Paint thickness is measured when dry.

9. Machinery: Before shipment, paint machinery including fans, compressors, pumps

and motors with the manufacturer’s standard shop prime coat.

10. Piping

a. Prime coat steel and cast iron piping and related pipe supports, immediately after

insulation, regardless of whether or not they will be subsequently covered with

insulation and / or finished paint. Apply prime coat in accordance with

manufacture’s specifications. Do not prime galvanized metals.

O. Cutting and Patching

1. Perform cutting and patching in accordance with the provisions of the Contract

Documents. In addition to the requirements specified, the following requirements

apply:

Perform cutting, fitting and patching of equipment and materials required to :

1) Uncover Work to provide for installation of ill-timed Work.

2) Remove and replace defective Work.

3) Remove and replace Work not conforming to requirements of the

Contract Documents.4) Remove samples of installed Work as specified for testing.

5) Install equipment and materials in existing structures.


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6) Upon written instructions from the Engineer, uncover and restore

Work to provide for Engineer observation of concealed Work.

2. Cut remove and legally dispose of selected electrical equipment, component and

materials as indicated, including but not limited to removal of mechanical items

indicated to be removed and items made obsolete by the new work.

3. Protect the structure, furnishings, finishes and adjacent materials not indicated orscheduled to be removed.

4. Provide and maintain temporary partitions or dust barriers adequate to prevent the

spread of dust and dirt to adjacent areas.

5. Protection of Installed Work: During cutting and patching operations, protect

adjacent installations.

6. Patch existing finished surfaces and building components using new materialsmatching existing materials and experienced Installers. Installer’s qualifications

refer to the materials and methods required for the surface and building

components being patched.

7. Patch finished surfaces and building components using new materials specified for

the original installation and experienced Installers. Installers qualifications refer to

the materials and methods required for the surface and building components being

patched.

2.04 FIELD QUALITY CONTROL

A. Tests

1. Perform tests on individual equipment, systems and controls in the presence of the

Representatives of the Employer, Engineer and such other parties as may havelegal jurisdiction.

2. Supply labor, materials, properly calibrated instruments, power, etc., required for

testing, unless otherwise indicated.

3. Before conducting any tests on system or equipment, thoroughly clean the

associated systems or equipment just prior to testing.

4. Test equipment and systems which normally operate during certain seasons during

the appropriate seasons. Where the equipment or system under test is interrelated

with and depends upon other equipment, systems, and/or controls for proper

operation, functioning and performance, operate the latter simultaneously with theequipment or system under test.

5. The duration of tests shall be as determined by authorities having jurisdiction, but

in no case less than the time prescribed in each section of the specifications.

6. In general, apply pressure tests to piping only, before connection of fixtures,equipment and appliances. Do not subject any piping, fixtures, equipment or

appliances to pressures exceeding their test rating.


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7. Promptly repair or replace defective work and repeat the tests until the particular

system and components parts thereof receive the approval for the Engineer.

Replace any damages resulting from tests, as directed by the Engineer.

8. Submit test records on reproducible sheets to the Engineer for approval and include

approved copy in the instruction Manual. The Engineer shall approve the format of

the record sheet prior to actual testing of equipment.

9. During tests of equipment and systems, fully instruct the Employer’s representative

on the operation and maintenance of the equipment and systems. This period is in

addition to any required special instruction, elsewhere specified.

B. Final Inspection

1. At final inspection, it is essential that certain trades be properly represented

including the following:

a. Mechanical Contractor including people thoroughly familiar with the

project, its intent, equipment and system installation and operation. b. Air-conditioning equipment manufacturer.

c. The automatic control manufacturer representatives familiar with the

installation who can demonstrate to the Employer’s satisfaction that the

controls perform according to the specified requirements.

d. The Electrical Contractor’s, representatives familiar with the

installation’s wiring and interlocking.

2. The Mechanical Contractor shall verify the actual operation of equipment and

controls prior to final inspection

2.05 CLEANING, ADJUSTING AND BALANCING-GENERAL

A. Thoroughly clean any apparatus before placing in operation. Restore finished surfaces

if damaged and deliver the entire installation in an approved condition.

B. Adjust and balance systems to operate as shown and specified.

2.06 INSERTS AND SLEEVES

A. Refer to Division 15 Section “PIPES AND PIPE FITTINGS” for the installation of

pipe sleeves.

B. Inserts in concrete for supports are to be as specified in other Division 15 Section.

C. Lay out the work in accordance with approved shop drawings. Furnish and set in place,

in advance of placing of slabs or construction of walls, all inserts and sleeves necessary

to complete the Work.

D. Pipe Sleeves: Unless otherwise indicated or specified, pipe sleeves are to be as follows:

1. General floor sleeves are to be standard weight galvanized steel pipe with bottom

and flush with surface, calked with glass wool and sealed at top and bottom with


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butyl mastic. Top end is to extend 25 mm above floor level in mechanical rooms.

Top end of sleeves is to be flush with finished floor surface in finished rooms.

2. Sleeves in Foundation Walls: Cast iron fabricated sleeves, flush inside and outside,

calked water tight.

3. Sleeves in Concrete Walls: Standard weight galvanized steel pipe, flush with wall

surface at both ends, calked with glass wool and sealed at both faces with butylmastic.

4. Sleeves in Interior Partitions and Ceilings: 20 gauge galvanized steel with lock

joints.

5. Sleeves for uninsulated piping are to be approximately 20 mm larger than pipe

passing through. Sleeves for insulated piping are to be large enough to

accommodate the full thickness of the pipe covering with clearance for expansion

and contraction.

6. Fire Rated Wall or Floor Sleeves-Galvanized Pipe : Annular space between pipe

and sleeve in the fire rated wall or the fire rated floor is to be packed with fire ratedsilicon foam.

E. Duct Sleeves: Where ducts pass through walls and partitions, provide sheet metal

sleeves and pack tight between duct and opening with fiber glass. The exposed side of

ductwork is to have galvanized 40 mm angle iron closure around duct. The angle irons

are to be secured to the wall construction.

2.08 EXCAVATION AND BACKFILLING PIPE TRENCHES

A. Excavation and backfilling of trenches required for the installation of all utility services

and underground piping within the building, and to points of connection with exteriorunderground utilities outside of the building, are to be performed by each trade for its

work as specified.

B. Excavate to the required depths and grade, the bottoms of trenches to secure the

required slope for pipe lines. Rock or existing concrete, where encountered, are to be

excavated to a minimum depth of 150 mm below the bottom of pipe. Where mud or

otherwise unstable soil is encountered in the bottom of the trench which is incapable of

supporting the pipe or utility lines, such soil is to be removed to firm bearing and the

trench is to be backfilled with sand to the proper grade and tamped to provide

uniformly firm support. Pipe is not to be laid on frozen subgrade.

C. Trench Size: Sides of trenches at point 300 mm above the top of pipe is not to be morethan 4/3 overall lateral dimension of the pipe, expressed in millimeters plus 200 mm.

Above this point the sides of trenches are to be kept as nearly vertical as possible and

are to be braced and shored to protect foundations, utility pipe lines and workmen.

Where machines are used to excavate pipe trenches, such machine excavation is to

terminate 75 mm above the invert of the pipe. Final excavation and shaping of the

trench is to be performed only for short distances in advance of the pipe laying.

D. Separation: Separate trenches are to be provided for potable water and sewer lines.


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E. The trenches are not to be backfilled until the piping has been tested by the Contractor

as required and reviewed by the Engineer and any local authorities having jurisdiction.

2.09 MAINTENANCE AND GUARANTEE OF EQUIPMENT AND SYSTEM PRIOR TO

FINAL ACCEPTANCE

A. Take necessary measures to insure adequate protection of equipment and materialsduring delivery, storage, installation and shutdown conditions. This responsibility shall

include provisions required to meet the conditions incidental to the delays pending final

test of systems and equipment under seasonal conditions.

B. Operate the completed systems for a period of time prescribed by the Engineer to

determinate the capability of the equipment and controls to conform to the

requirements of the drawings and specifications.

C. Guarantee period for mechanical works shall be one years from the date of issuance of

taking over certificate.

D. Make final operating tests with systems in simultaneous operation and building innormal operating modes.

2.10 TRAINING

A. The Contractor shall instruct and train Owners designated personal in the operation and

maintenance of every part, device and piece of equipment in the systems with emphasis

on proper startup and shutdown procedures, preventive maintenance and lubrication

procedures with recommended lubricants, overhaul and maintenance methods,

adjustment and calibration of instruments and controls, use of special tools and safe

practices.

The duration of training shall be for a total period of ninety working days, eight hoursa day.

This period shall follow the final inspection date and shall not necessarily consist of a

single series of consecutive days. Apportion time between summer, winter, and

intermediate operating seasons as mutually agreed.

B. All expenses for training Owners personnel shall be at Contractor’s own cost..

C. Commencement date of training shall be subject to client approval.

END OF SECTION


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SECTION 15030 – ELECTRICAL WORKS FORMECHANICAL SYSTEMS

Page 1 of 11

SECTION 15030

ELECTRICAL WORKS FOR MECHANICAL SYSTEM

A. SCOPE

Supply and install all Electrical Works, equipment and accessories specified under the

various Mechanical Systems.

Electrical Works shall comply with any of the following standards:

ANSI, NEMA, BS, VDE, DIN, IEC, UTE.

Electrical Works for mechanical systems shall comply with SBC requirements.

All electrical equipment, materials, accessories, etc,... to be supplied for the

Mechanical Systems, as well as all electrical works and tests to be done shall conform

also with the requirements of the relevant Specifications for the Electrical Systems.

The scope of the Electrical Works under this section and executed by the MechanicalContractor includes the supply and installation of the followings:

a. Motor control centers, motor control panels for each item or system and

housing all protection gear, switches and controls required for the specified

function.

b. All cables and wires between equipment and the corresponding motor control

center or motor control panel.

c. All electrical equipment, wiring, cables, conduits, boxes, earth connections,

control switches, starters, circuit breakers, isolating switches, relays,

contactors, protective gear or equipment, transformers, etc,... and all other

necessary item or components required for the satisfactory operation, control

and protection of the systems.

B. WORKS NOT INCLUDED

The following electrical items will be supplied and installed by the Electrical

Contractor.

a. Power close to each electrically operated equipment not fed from a control

panel.

b. Main feeder to the motor control centers and control panels of mechanical

equipment.

C. GENERAL REQUIREMENTS

a. Ratings of circuit breakers serving electric motors are design values and must

be checked and readjusted, if need be, to conform with motor actual power and

rating as recommended by motors Manufacturers.


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b. Power supply connections to vibrating or rotating machinery shall be made

through adequate metallic flexible conduits or tubings through which cables

and wires shall be drawn.

c. Cables shall be color coded for identification. Red, Yellow and Blue shall be

used for phase conductors, Black for neutral and Green for earth conductors.

d. Control voltage for starters and control circuits shall not exceed 240 volts.

e. Shop and Installation Drawings are to be submitted for approval prior to

ordering materials and equipment. Drawings to include the following:

i. Complete technical data on all motor starters, motor protection relays,

sensing units, control accessories, etc.

ii. Instructional details of equipment, particularly motor control centers

and panels

iii. Wiring diagrams of all power and control circuits

iv. Installation details of motor control centers and panels and of controland sensing accessories

v. Exact routing of power and control cables, wiring and conduits

vi. Feeder termination details at motor control centres, starters, motors,

isolating switches, control and sensing accessories etc.

f. Power and control wiring to run in conduit unless otherwise specified.

g. Power and control wiring to run in separate conduits.

h. Rigid conduits are not to terminate in nor be fastened to a motor frame or base.

j. Flexible conduits to be used at motor connections. Allow sufficient slack to

permit motor to slide over adjustable length of motor base. Length and radius

are to be sufficient to permit bending of feeder cables without damage to

conductor or its insulation. Flexible conduits are not to be used in place of rigid

conduit except at motor connections, unless otherwise specified.

k. Conduits are to be supported with conduit supports in an adequate approved

manner.

l. Conduits are not to cross pipe or vent shafts, ducts or openings. They are to be

run a minimum 100 mm away from pipes of non-electrical services.

m. Detailed control wiring diagrams and a list of control equipment with

descriptive literature are to be submitted for approval. Free hand field wiring

diagrams or sketches will not be accepted.

n. Circuits to be arranged to satisfy operating requirements specified for various

equipment driven by electricity and other requirements pertaining to proper

functioning and operation of equipment.


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p. Circuits to be protected with high rupturing capacity fuses or circuit breakers.

Auxiliary supply for controls, other than from main power circuit, is to be

effectively isolated by auxiliary contacts on main isolator.

q. Motors to be earthed by connecting green insulated conductor from earthing

bushing in starter to motor frame. Run earth conductor together with circuit

wiring and terminate in motor terminal box, provided earth terminal in box is

connected to motor frame. If this is not feasible, extend earth conductorthrough insulated bushed opening in terminal box and connect to motor base.

r. Equipment to be earthed by connecting non-current carrying metal parts of

system to earth source. Non-current carrying metal parts include conduits,

cable trays, outlet boxes, cabinets, enclosures, doors, grilles, and barriers

protecting or shielding electrical equipment from direct access.

s. Detailed wiring diagram is to be fixed inside each starter enclosure cover to

clearly indicate circuits.

t. Control and power wires are to be identified either by distinctive colored

insulation, engraved tags or other approved method.

u. Circuit breakers earth fault detection and interruption are to be coordinated

with those of main incoming breaker on main distribution panel.

v. Manufacturers to be proposed by Tenderer as part of his Tender, in all cases to

be approved by Consultant.

D. CONDUITS

Size is to be minimum 20 mm unless otherwise specified.

Steel conduits are to be welded, drawn, heavy gauge, to BS 4568 Part 1 or approved

equal, galvanized internally and externally and threaded both ends.

Fittings for steel conduits are to be threaded, galvanized or cadmium plated malleable

iron specifically designed for size and type of conduit.

E. WIRES AND CABLES

Power wires and cables are to be 600/1000 V grade, to BS 6004. Single conductor

wires and multicore cables to have high conductivity tinned copper wire conductors

insulated with PVC compound, with additional PVC sheath for multicore cables.

Control wires and cables are to have conductors tinned annealed copper, minimum area

1.5 sq mm. Insulation is to be moisture resistant flame retardant PVC compound.

Wires and cables to be rated for 240 V service. Multicore cables for control andsignaling to be PVC insulated copper conductors, PVC sheathed, to BS 6346.

Control wires and cables are to be provided with special heat resistant insulation or

corrosion resistant sheath where required.


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Armored cables to have the armor as single layer of galvanized steel wire under the

PVC sheath.

Connections to motors to be single conductor wires pulled inside conduits or multicore

cables armored or no armored and fixed on cable trays or supports.

Special conditions: where required high temperature resistant cables, silicone rubber,

cross linked polyethylene, MICC, or approved equal, corrosion resistant sheath is to be

provided.

F. ELECTRIC MOTORS

Motors are to be supplied by driven equipment manufacturer, to be as specified for

equipment concerned and specifically supplied for available supply voltage and

frequency.

Motors 1/2 horsepower and under to be single phase and over 1/2 horsepower to be

three phase. Motors to be totally enclosed, fan cooled type, unless otherwise specified.

Motors are to have Class B insulation as a minimum requirement as defined in IEC 85

and IEC 34-I.

Motors that will operate outdoors are to have Class F insulation.

Motors operating in ambient temperatures exceeding 45 deg. C to be tropicalized and

derated for satisfactory operation.

Motors to be rated for continuous operation.

Power to be adequate to operate driven equipment without motor overload under all

operating conditions and loads and throughout capacity range of equipment. Motor to

be capable of delivering full rated output when operating at voltage deviating by 5%

from rated voltage at rated frequency.

Starting and torque characteristics to be as required by driven equipment.

Speed to be as specified for equipment concerned.

Conduit terminal box on motor to be approved model for type of motor enclosure.

Motor windings to be connected to terminals in terminal box at factory. One additional

earthing terminal to be connected to motor frame.

Motor base to be adjustable where motors are directly connected to driven equipment,

unless otherwise specified. Motors connected to equipment through V-belt drive to

have adjustable sliding base. Fractional horsepower motors to have slotted mounting

holes in base.


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G. STARTERS

The starting current of all motors above 10 hp shall not exceed twice its rated full load

current, for 15 seconds. For motors of rating 10 hp and below, the starting current shall

not exceed 6 times its rated full load current, for 5 seconds.

In general, motors above 10 hp shall have assisted start in the form of Star-Delta

starters of the close transition type. Motors below 10 hp can be Direct on line Start.

Motors above and including 50 HP should be assisted by soft-starter.

Each three-phase motor shall be provided with means of automatic starting and to

disconnect the supply to the motor in case of:

a. Failure of one or more phases.

b. Serious drop in voltage.

c. Flow of excess current.

All starters shall be properly derated for operation in an ambient temperature of 45°C.

All starters shall be of the magnetic automatic type fitted with thermal over load

relays/devices calibrated for close motor protection.These devices shall trip the starters in case of overload and shall not allow it to reset

except manually.

The starters shall be capable of making and breaking their rated current adequately and

shall withstand as high as 5 times their rated current for at least 10 seconds without any

injury or failure.

Starters shall be fitted with On/Off/Fail Pilot lights, start and stop push buttons,

Hand/Off/Auto selector where required. All starters shall be provided with contacts for

BMS control and signaling (start/ stop and fault). Contacts to be provided to show the

position of the selector switch on BMS.

The contactors shall be capable of withstanding an intermittent duty and the number of

switching cycles required in the Standards. They shall be AC3 duty rated.

The contactors shall be provided with auxiliary contacts for connection of signaling,

interlocking, and other circuits required for controls.

The enclosures of the contactors, starters, etc., as well as their installation and

accessibility for operation and repair shall be suitable for the corresponding motors

with which they are related.

The contactors shall be suitable for mounting in any position. The contacts shall be

silver plated, bounce free and fully enclosed.

All motors control gear and ancillary equipment shall be protected by thermal and

magnetic circuit breakers in addition to the protective starter mentioned above.

Where starter operating circuits and ancillary apparatus are energized by an auxiliary

supply other than the main power circuit to the motor, the isolator shall also incorporate

auxiliary contacts to effectively isolate all poles of phases of such other power supply.


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All Starters not in a central panel shall have a sheet metal enclosure with a removable

lid and cover and necessary brackets for mounting on panel or wall. A clear schematic

diagram of the starter circuit shall be fixed inside the cover of each starter.

H. ISOLATING SWITCHES

Isolating switches to be non fusible, single throw type, housed in separate metallic

enclosure, with arc quenching devices on each pole capable of interrupting at least six

times its rated current. They are to simultaneously interrupt power supply to all lineconductors, any neutral and control circuits.

Isolating switches for single phase fractional horsepower motors to be single pole,

dolly operated type, rated 15/20 A at 250 V AC, quick make, quick break, with silver

alloy contacts, flush or surface mounted to suit application. They shall be AC3 duty

rated.

Operating mechanism to be quick make quick break type, with external operating

handle mechanically interlocked with enclosure cover to necessitate disconnecting

switch to be in OFF position for access to inside of enclosure. Means are to be providedfor by passing interlocks. Position of isolating switch to be clearly indicated on cover.

Isolating switches for motors with star/ delta starting shall be interlocked with the

starter control circuit to reset the starter to the star connection in a way to prevent the

starting of the motor on delta connection after closing the switch.

Enclosure to be general purpose type, unless otherwise indicated or required, with

provision for locking operating handle in OPEN and CLOSED positions.

Enclosures where indicated or required by location to be weatherproof totally sealed

water and dustproof type.

J. COMBINATION STARTERS ISOLATING SWITCHES

Components to comprise magnetic starter, isolating switch and short circuit protection

devices required by the Standards, in approved sheet metal enclosure to suit ap-

plication.

Isolating switch operating mechanism quick make, quick break, with external operating

handle mechanically interlocked with enclosure cover necessitating disconnecting

switch to be in OFF position for access to inside of enclosure. Means are to be provided

for by passing interlocks. Position of isolating switch to be clearly indicated on cover.

Short circuit protection gear to be HRC fused cartridges or molded case circuit breakers

of appropriate current rupturing capacity.

Operation of circuit breaker to be possible from outside of enclosure. Position of

breaker ON/OFF/TRIPPED to be clearly indicated by position of handle.


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K. PUSH BUTTONS

Push buttons to be one unit momentary contact START/STOP with normally open or

normally closed contacts as required by wiring diagrams and with lockout attachments.

Heads to be color coded and STOP button to be protected. Push buttons controlling one

piece of equipment to be housed in separate enclosure.

L. RELAYS

Relays to be multipole with normally open or normally closed contacts, electrically

operated at 240 V maximum, and magnetically held. Contacts to be double break,

silvered type, interchangeable from normally open to normally closed without

additional parts. Relays are to be rated at 10 A, 600 V.

M. CIRCUIT BREAKERS

Circuit breakers to be thermal magnetic type, with molded case, manually operated for

normal switching functions and automatically operated under overload and short circuit

conditions.

Circuit breakers to give positive trip free operation on abnormal overloads, with quickmake quick break contacts under both manual and automatic operation. Stationary and

movable contacts to be non welding silver alloy adequately protected with effective

and rapid arc interruption.

Branch circuit breakers to be minimum 125 A frame size, unless otherwise shown.

Main circuit breakers to be 125 A frame size or larger as shown on the Drawings.

Breakers of 250 amp frame size and larger to have electronic trip units.

Main incoming breakers to be current operated, earth leakage type, or suitably

equipped to provide earth fault protection. Earth fault detection and interruption to be

time coordinated with those of main incoming breaker on main distribution board.

Multiple pole breakers to have single handle mechanism. Each pole to have inverse

time delay thermal over current trip element and magnetic instantaneous over current

trip element for simultaneous tripping of all poles.

Trip elements to be ambient temperature compensated type.

N. MOTOR CONTROL CENTER (MCC)

Totally enclosed freestanding sectional type, cubical and with-drawable type with

sections joined to form one assembly. Sections to be designed to allow other sections to

be easily added or removed.

MCC shall be of unit construction single or double fronted type with a common bus

bar. It shall be made up of any number of steel plat cubicles with turned edges and

subdivided into compartments to suit the control gear items, all bolted together to form

self-contained switchboard.

Enclosure shall be NEMA type 1 unless otherwise required or indicated on the

drawings or required by the equipment location.


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Enclosure shall have provision for locking the operating handle in the “OPEN” and

“CLOSED” positions.

MCC shall be constructed such that all compartments doors are interlocked preventing

access to the starter until the corresponding isolating switch or breaker is in the off

position.

Motor control centers are to be provided with Automatic transfer switches.

Construction to be 2 mm thick sheet steel, adequately reinforced and braced for

maximum rigidity, sand blasted, rust inhibited after fabrication and sprayed with one

coat primer and two coats enamel internally and externally.

Components motor control centre to include the following:

1. Main incoming circuit breaker or isolating switch as shown on the Drawings

for terminating incoming supply cables and isolating the bus bar system

2. Main copper bus bars rated as main incoming circuit breaker or as shown on

the Drawings

3. Branch copper bus bars of adequate capacity to distribute power to each circuit breaker and starter served

4. Neutral copper bus bar rated at half capacity of main bus bar and distributed

throughout whole motor control centre

5. Earth copper bus bars to be minimum half the neutral bus bar rating extending

full length of motor control centers

6. One voltmeter with commutator range 0-415 V

7. Ammeters on main supply with necessary current transformers

8. Starters, circuit breakers, push buttons, indicating lights, switches, relays,

contactors and accessories as shown on the Drawings

9. Interconnecting and interlock wiring.

10. Provision for KWHM.

Bus bars to be adequately isolated and braced to sustain maximum possible short

circuit current.

Compartment doors to be interlocked so that isolators or breakers must be in OFF

position before door can be opened.

Spare positions to be fully equipped cells ready for connection to motors are to be

provided in adequate number.

Space positions to be fully equipped cells ready to receive control unit are to be

provided in adequate number. Space positions to have blank cover plates.


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Starters, Switches, other components and electrical devices to be clearly labeled in

English as to number and function, with incised letters on black Bakelite with white

laminated core. Labels to be permanently fixed under each component.

Incoming line connections to be made with solderless, terminal four bolt type clamps.

Labels starters, switches, electrical devices and accessories to be clearly labeled in

English as to function and number. Labels are to be permanently fixed under each

component.

Schematic and wiring diagrams to be firmly fixed within motor control centre, showing

each component and cross- referenced with component labels.

Submit for approval electrical schematic diagram of whole installation, suggested

layout of motor control centre, interior wiring details and complete technical literature

on all proposed components, prior to fabrication or purchase.

P. MOTOR CONTROL PANELS

Motor control panels to be wall mounted or unit mounted, lockable type.

Construction to be minimum 1.5 mm thick hot-dip galvanized steel sheet, finished withone coat etch primer and one coat stove enamel internally and externally.

Panels installed outdoors to have weatherproof totally sealed water and dustproof

enclosures.

Panels are to contain necessary breakers, starters, push button switches, selector

switches, relays, indicating lights, interconnecting and interlock wiring and all devices

and accessories required for automatic or manual operation of equipment as specified

under equipment concerned.

Labels starters, switches, electrical devices and accessories to be clearly labeled in

English as to function and number. Labels to be permanently fixed under each

component.

Schematic and wiring diagrams to be mounted in permanent approved manner on

inside of panel door. Diagrams are to show each component cross referenced with

component labels.

Q. SWITCHES

Float switches to be level operated, heavy duty, bracket mounted type, suitable for

application in open tanks, complete with 178 mm spun copper float, brass rod, two

stops, floor mounting stand, lever and counterweight. Switch to have oil tight and dust

tight enclosure and 2 pole double throw silver contacts that open on liquid rise.

Pressure switch to be industrial, heavy duty, bellows actuated type, suitable for water

service, with contacts to close on falling pressure. Range to be 0.1 to 8 kg/cm2. Switch

to be good for 1720 kPa operating pressure and to have 6 mm pipe tap bottom

connection. It is to have oil tight and dust tight enclosure, single pole double throwcontacts and setting adjustment.


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Low suction pressure switch to be industrial, sensitive, low range, diaphragm actuated

type, suitable for water service, with range of 2 to 20 kPa of falling pressure, preset at

factory to 3 kPa. Switch to be good for 690 kPa operating pressure and to have 6 mm

pipe tap bottom connection. It is to have oil tight and dust tight enclosure, single pole

double throw contacts, range adjustment knob, sealing cap and range locking nut.

R. SWITCHBOARD INSTRUMENTS

1. General

.

Instruments shall be supplied and arranged as called for on the drawings and herein

specified.

All instruments shall be housed in identical 4 inch white enameled square metal

cases suitable for switchboard flush installation.

Instruments shall be with linear scales and markings in according.

Instruments shall be suitably protected and sealed for tropical use.

Accuracy of all instruments shall be within 1% unless otherwise specified.

2. Voltmeters

Voltmeters shall be moving coil type 90° scale and a center zero adjuster.

Voltmeters shall be fitted with a rotary type 7-position selector switch permitting

both line to line and line to neutral readings and “OFF” position.

3.

Ammeters shall be moving coil shunt operated type with 90° scale and center zeroadjuster.

Ammeters

4. Kilowatt Hour Meters

Kilowatt hour meters shall be switchboard type with built-in test facilities, a front

nameplate on which CT and PT ratios and meter constants shall be stamped.

The counters shall be of cyclometer type with six digits and a register multiplier as

indicated on the drawings.

5. Test Terminal Block

Test terminal block shall permit Site testing of switchboard instruments without

interrupting the load circuit.

Test block shall be fitted with 4 voltage terminals and links, and 3 sets of current

terminals and links.

All terminals shall be of solid brass and rated 50 Amps at 50° C.


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6. Current Transformers

Current transformers shall be suitable for withstanding thermal and dynamic

stresses due to switchgear short-circuit currents. Current transformers connections

to protective and control devices and all outgoing current terminals shall be by

means of terminals which can be short circuited, isolated, and in addition provided

with plug in test points for portable instruments.

Unused secondary terminals shall be short-circuited. Additional taps on current

transformers shall be wired to the outgoing terminal block.

The current transformer range shall match the associated device.

END OF SECTION


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SECTION 15050 – BASIC MATERIALS AND METHODS

Page 1 of 4

BASIC MATERIALS AND METHODS

SECTION 15050

PART 1 - GENERAL

1.01 SUMMARY

A. Provide labor, materials, equipment and services, and perform operations required for

complete installation of basic mechanical materials and related work as indicated onthe drawings and specified herein.

B. Related Work

Division 15: Mechanical

Division 16: Electrical

C. Work Included

: The work shall include, but not be limited to, the following:

1. Excavation for underground utilities and service.

2. Miscellaneous metals for support of mechanical materials and equipment.

3. Access panels and doors in walls, ceilings and floors for access to mechanical

materials and equipment.

4. Mechanical equipment nameplate data.


A. Materials and equipment shall conform to the latest edition of reference specifications

specified herein and to applicable code and requirements of local authorities having

jurisdiction.

1.03 SUBMITTALS

A. Submit the following submittals in accordance with Section 15010 “Basic Mechanical

Requirements.”

B. Provide product data for the following products:

1. Access panels and doors.

2. Joint sealers.

3. Pipe and duct sleeves.

C. Shop drawings detailing fabrication and installation for metal fabrications, and wood

supports and anchorage for mechanical materials and equipment.

D. Coordination drawings for access panel and door locations in accordance with

Section15010 “Basic Mechanical Requirements “.

E. Schedules indicating proposed methods and sequence of operations for selective

demolition prior to commencement of work. Include coordination for shutoff of utility


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service, and details for dust, fire and noise control. Coordinate sequencing with

construction phasing and Employer occupancy specified in the contract Documents.

1.04 DELIVERY, STORAGE AND HANDLING

A. Deliver joint sealer materials in original unopened containers or bundles with labels

informing about manufacturer, product name and designation, color, expiration period

for use, pot life, curing time and mixing instructions for multi-component materials.

B. Store and handle joint sealer materials in compliance with manufacturer’s

recommendations to prevent their deterioration and damage.

PART 2 - PRODUCTS

2.01 MATERIALS

A. Mechanical Equipment Nameplate Data

1. Nameplate: For each piece of mechanical equipment provide a permanent

operational data nameplate indicating manufacturer, product name, model number,

serial number, capacity, operating and power characteristics, labels of testedcompliances, and similar essential data. Locate nameplates in an accessible

location, as approved by Engineer.

2. Relocate nameplates as required and approved after installation to permit easy

reading.

B. Sealant

1. Provide ready-to-use silicone penetration seal that will stop passage of fire, smoke,

and water will cure in the presence of atmospheric moisture to product durable and

flexible seal, and will form airtight and watertight bonds with most common

building materials in any combination including cement, masonry, steel, andaluminum.

2. Sealant Composition shall be one-part ready-to-use materials with consistency of

soft caulk at temperatures ranging from -35 to 160 F, and extension and

compression properties of plus/minus 40% of original gap.

C. Access Doors

1. Steel Access Doors and Frames: Factory-fabricated and assembled units, complete

with attachment devices and fasteners ready for installation. Joints and seams shall

be continuously welded steel, with welds ground smooth and flush with adjacent

surfaces.

2. Frames: 16-gauge steel, with a 1 inch wide exposed perimeter flange for units

installed in unit masonry, precast or cast-in-place concrete, ceramic tile or wood

paneling.

a. For installation in Masonry, Concrete, Ceramic Tile, or Wood Paneling : 1 inch

wide exposed perimeter flange and adjustable metal masonry anchors.


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b. For full-Bed Plaster Applications : Galvanized expanded metal lath and

exposed casing bead, welded to perimeter of frame.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Examine conditions at the job site where work of this section is to be performed to

insure proper arrangement and fit of the work. Start of work implies acceptance of jobsite conditions.

3.02 PREPARATION

A. Examine the Contract Drawings and Specifications in order to insure the completeness

of the work required under this Section.

B. Verify measurements and dimensions at the job site and cooperate in the coordination

and scheduling of the work of this Section with the work related trades, so as not to

delay job progress.

C. Provide templates as required to related trade for location of support and anchorageitems.

D. Preparation for Joint Sealers.

1. Thoroughly clean surfaces, removing foreign matter such as dust, oil grease, water,

surface dirt and frost. Materials must be applied to the base surface.

2. Prior to any priming and sealing, joints shall be masked by masking tape or other

approved means to prevent soiling of adjacent surfaces.

3. Immediately prior to application of materials test adhesion of materials, to each

substrate material and apply primer to any surface sharing poor adhesion.

4. Where required support material with damming materials specified herein. Where

sealant materials require damming provide duct tape or compatible backer rod.

3.03 INSTALLATION, ERECTION AND APPLICATION

A. Erection of Support and Anchorage

1. Cut, fit and place miscellaneous metal fabrication accurately in location, alignment

and elevation to support and anchor electrical, plumbing and HVAC materials and

equipment.

2. Attach to substrates as required to support applied loads.

B. Installation of Access Doors

1. Set frames accurately in position and securely attach to supports, with face panels

plumb and level in relation to adjacent finish surfaces.

2. Adjust hardware and panels after installation for proper operation.


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3. Location

a. Locate access doors in hung ceilings, walls, furred spaces, partitions and other

components of the structure, where required to service fire dampers, smoke

detectors, duct access doors, controls, valves, cleanouts and other items

installed under this Division of the specification.

b. Contractor shall coordinate the exact location and quantity with Mechanicaland Electrical requirements. Access doors are not required in suspended

acoustical lay-in tile ceilings unless specifically shown.


A. Inspect seal after 48 hours for complete adhesion, and seal and correct any deficiencies.

B. Follow manufacturer’s installation instructions precisely, including 4-point field quality

control check which consist of foam color, foam cell structure, snap time, and free

foam density.

C. Inspect seal after 24 hours. Remove damming materials to inspect under site.

D. Correct any deficiencies by adding foam or sealant. Re-inspect after 24 hours.

3.05 ADJUSTING AND CLEANING

A. Clean excess cured sealant from nonporous surfaces with commercial solvent such as

naphtha mineral solvents, following instructions on container label.

B. Clean spills of liquid components with high-flash mineral spirit solvent, following

instructions on container label. Trim excess foam with sharp knife or blade.

C. Remove equipment, materials and debris. Leave area in undamaged, clean condition.

END OF SECTION


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SECTION 15051 – WELDING

Page 1 of 3

WELDING

SECTION 15051

PART 1 - GENERAL

1.01 RELATED WORK

A. Division 15: Mechanical


A. This section covers the standard of shop welding and erection welding of mechanical

equipment, steel structure, framework, supports and piping.

1.03 REFERENCES

A. Reference Standards

The latest editions of the following standards and recommendations shall apply in

applicable parts.

1. American Standards

a. American Welding Society (AWS)

AWS B 1.0 Guide for the non-destructive inspection of welds.

AWS B 3.0 Welding procedure and performance qualification.

AWS D 10.4 Recommended practices for welding austenitic chromium-

nickel stainless steel piping and tubing.

AWS D 10.9 Qualification of welding procedures and welders for piping

and tubing.

b. American National Standards Institute (ANSI)

ANSI / AWS B4.0 Standard methods for mechanical testing of welds.

ANSI B 31.3 Chemical plant and petroleum refinery piping.

c. International Institute for Welding (IIW)

IIE XV-50 - 56E Rules for welded constructions.


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1.04 SUBMITTALS

A. Product Data

1. All electrode rode types, and sizes shall be given indicating the intention of use.

B. Qualified Staff

1. The name, certificates of standard of welding obtained, and picture of each welder to be used in a list indicating the level of welding the person is intended to be used for.

2. A simple, clearly shown, overall identification system to indicate the individual

capacity of experience.

PART 2 - PRODUCTS

2.01 OPERATORS

A. Each operator shall wear an identification system to indicate their level of experience.

Operators shall be certified welders or from an approved governmental institute.

Records of the welding procedures and welder performance qualification tests for work

done shall be maintained by the Supplier for review.

The method and procedure adopted for welding in workshops and at the site shall be

approved before production starts.

The applicable parts of the following documents from the American Welding Society

shall apply:

AWS B 3.0

AWS D 10.9

ANSI / AWS B 4.0

B. Processes

1. Carbon Steel

Manual shielded, metal-arc, submerged arc, gas metal -arc, flux-cored arc, gas tungsten

arc, and other applicable welding processes and methods may be used in the

construction and fabrication of welded carbon steel equipment shall as far as possible

be prefabricated in the workshop. Use electrodes for steel 6010 root pass and 7018

filler pass, and for copper use 15% silver electrodes for copper brazing, and non lead on

antimony rod for solder.

For the welding of carbon steel piping, ANSI Code B 31.3 shall apply.


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PART 3 - EXECUTION


A. The Standards and practices referred to are applicable.

B. Reference is also made to the relevant system and/or material specification.

3.02 TESTS

Contractor shall execute X-ray test at random as requested by the Engineer for 50

welds. If tests fail Contractor shall redo the X-ray test after re-welding till the Engineer

is satisfied.

END OF SECTION


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SECTION 15060 – PIPES & PIPES FITTINGS

Page 1 of 24

PIPES & PIPES FITTINGS

SECTION 15060

1.01 RELATED WORK

A. Division 15 - Mechanical


A. This section covers the general piping and fittings supply and installation required for

the works.

1.03 REFERENCES

A. Reference Standards

The latest edition of the following standards:

1. American Society for Testing and Materials (ASTM):

a. ASTM A53B Welded and Seamless Steel Pipe for Ordinary Use, Specificationfor Black and Hot Dipped Zinc Coated.

b. ASTM B88 Specification for Seamless Copper Water Tube.

2. American National Standards Institute (ANSI): Standards as specified herein.

3. Manufacturer's Standardization Society (MSS): Standards as specified herein.

4. American Welding Society (AWS): Standards as specified herein.

5. American Petroleum Institute (API): Standards as specified herein.

1.04 SUBMITTALS

A. Product Data:

Descriptive literature for each of the actual proposed material to be used

including:

1. Operating Pressure Ranges

2. Pressure Losses.

3. Fluid Flows.

4. Test Reports.

5. Certificates of approval.

B. Shop Drawings

Shop drawings for each of the actual proposed systems shall include the

following:

1. Working or manufacturing drawings.2. Calculations


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3. Installation details

4. Connections to other services

5. Accessories available indicating those included

6. System diagrams.


A. Qualify welding processes and operators for structural steel according to AWS D1.1

"Structural Welding Code--Steel".

B. Qualify welding processes and operators for piping according to ASME "Boiler and

Pressure Vessel Code", Section IX, "Welding and Brazing Qualifications".

1. Comply with provisions of ASME B31 Series "Code for Pressure Piping".

2. Certify that each welder has passed AWS qualification tests for the welding

processes involved and that certification is current.

3. Submit welder certificated signed by the Contractor certifying that welders comply

with the requirements specified above.

1.06 WORK INCLUDED ELSEWHERE

A. Section 15405: Soil, Waste, and Roof Drainage Piping Systems.

B. Sections related to External Site Utilities.

PART 2 - PRODUCTS

2.01 PIPES

Service Pipe Material

1. Condensate drain Water

Pipes

Pressure UPVC - 10 bar

2. Chilled Water Seamless black welded steel pipes schedule 40 to

ASTM A53 TYPE S-with welded joints

3. Underground Cold Water. UPVC - 16 bar

4. Domestic Water (Hot &

Cold) at floor levels

Polypropylene pipes for cold water

Polypropylene pipes with aluminum layer for hotwater and hot water return

5. Domestic Water Cold,

inside shafts and mechanical

rooms

Pressure UPVC schedule 80

6. Wet Standpipe System. Black seamless steel medium weight with

Victaulic mechanical pipe coupling


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7. Irrigation Water Pipes Pressure UPVC - 16 bar, and HDPE irrigation pipe

8. Refrigerant Pipes Copper Type L.

9. Fire Water Pipes ( Indoor) Black seamless steel medium weight with

Victaulic mechanical pipe coupling

10 Fire Water Pipes

(Underground)

UPVC – 16 bar

11. Water Tank over flow and

drain pipes.

Pressure UPVC - 10 bar for overflow

Galvanized Steel Schedule 40, Seamless for drain

12. FM200 Fire Protection Black malleable Steel Seamless Class 300, Sch.80.

13. Pool Pipes UPVC Class E. (1) – 16 bar

14 Expansion Pipes Schedule 40 Black Mild Steel, Seamless

15 Drainage Soil and waste in

shafts and technical floors

UPVC plastic pipes

16 Rain water pipe in shafts

And technical floors.

UPVC plastic pipes

17 Drainage Soil and waste in

toilets

UPVC sound insulated where needed

18 Drainage pipes for parking

Drains.

-Vent pipes inside shafts

and in toilets

UPVC plastic pipes

19 Drainage pipes for laundry

And kitchen special

equipment (where

mentioned on the drawings

Cast Iron pipes

B. Sizes

1. Unless otherwise specified pipework of 65 mm nominal bore and over shall be

welded, while 50 mm nominal bore and below the pipework shall be screwed.


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2.02 PIPING MATERIALS

A. Copper Piping

a. Pipe work shall be Type “ K “ hard temper copper tubing conforming to ASTM B

88, or table “Y” to BS 2871 with PVC coating or tape.

b. Copper fittings shall be streamlined wrought copper solder type of pattern to suit

requirements (ANSI B 16.22).

c. Flanges for copper pipes shall be cast bronze with raised ground face and bolt holespot faced. Flanges shall be rated for 1.5 MPa water working pressure.

d. Gaskets shall be of a material suitable for the fluid, temperature, and pressure for

which they will be used.

e. Lead-and antimony based solders should not be used for potable water system.

Brazing and silver solders should be employed. Use 15 % silver rods for brazing.

B. Galvanized Steel Piping

a. Galvanized steel pipe fittings for 50 mm and smaller.

a. ANSI B16.3, 1MPa, galvanized malleable iron, threaded.

b. Threads, ANSI Bz.1.

b. Galvanized steel pipe fittings for 65 mm and larger.

a. ANSI B16.9, standard weight galvanized.

c. Flanges for galvanized steel pipes: ANSI B16.5, class 150.

d. Gaskets shall be of material suitable for the flu

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