NATIONAL HIGHWAYS AUTHORITY OF INDIA (Ministry of Road Transport & Highways) NORTH SOUTH CORRIDOR PROJECTCONTRACT PACKAGE NO 29 (MH) CONSTRUCTION OF FOUR LANE ROAD OVER BRIDGE(Km.22.850 to Km.24.650) INCLUDING APPROACHESAT BUTIBORI ON NAGPUR HYDERABAD SECTION OFNH-7 IN LIEU OF EXISTING LEVEL CROSSING NO. 113 IN THE STATE OF MAHARASHTRA BID DOCUMENT - ITEM RATE CONTRACT NATIONAL COMPETITIVE BIDDING VOLUME II TECHNICAL SPECIFICATIONS(SECTION 5) G-5 & 6, Sector-10, Dwarka New Delhi-1100045 September 2002 NATIONAL HIGHWAYS AUTHORITY OF INDIA (MINISTRY OF ROAD TRANSPORT & HIGHWAYS) NORTH SOUTH CORRIDOR PROJECTCONTRACT PACKAGE NO 29 (MH) CONSTRUCTION OF FOUR LANE ROAD OVER BRIDGE(Km.22.850 to Km.24.650) INCLUDING APPROACHESAT BUTIBORI ON NAGPUR HYDERABAD SECTION OFNH-7 IN LIEU OF EXISTING LEVEL CROSSING NO. 113 IN THESTATE OF MAHARASHTRA BID DOCUMENT - ITEM RATE CONTRACT VOLUME -II CONTENTS SECTION PARTICULARSPAGE NO. 5TECHNICAL SPECIFICATION PREAMBLE5-1 GENERAL REQUIREMENTS 5-2 AMENDMENTS/MODIFICATIONS/ADDITIONS TO 5-3to5-21 EXISTING CLAUSES OF GENERAL TECHNICAL SPECIFICATIONS ADDITIONAL TECHNICAL SPECIFICATIONS NATIONAL HIGHWAYS AUTHORITY OF INDIA TECHNICAL SPECIFICATIONS SECTION 5 1.PREAMBLE 1.1 TechnicalSpecificationscontainedhereinshallbereadinconjunctionwiththeotherBidding Documents as specified in Volume-1. 1.2SITE INFORMATION 1.2.1Theinformationgivenhereunderandprovidedelsewhereinthesedocumentsisgiveningood faithbytheEmployerbuttheContractorshallsatisfyhimselfregardingallaspectsofsite conditionsandnoclaimwillbeentertainedonthepicathattheinformationsuppliedbythe Employer is erroneous or insufficient. 1.2.2Theareainwhichtheworksarelocatedismostlyplainterrain,theapproximatelongitudeand latitude of the region being 79 3'E and 21 30 N respectively.1.23General Climatic Conditions 1.2.3.1 Thevariationindailytemperatureinthisregionisasunder: During summer months, from about 30 degree C minimum to 42 degree C maximum. During winter months, from about 15 degree C minimum to 30 degree C maximum 1.2.3.2 Theaverageannual rainfall in the area is of the order of 510 mm to 1550 mm, a good portion of which is concentrated during the months of July to September each year.1.2.3.2 The range of relative humidity varies from a minimum of 32% to a maximum of 80%.1.2.4Seismic ZoneThe works are located in Seismic Zone II as defined in IRC : 6-1966. 2.GENERAL REQUIREMENTS TheTechnicalSpecificationsinaccordancewithwhichtheentireworkdescribedhereinafter' shall be constructed and completed by the C ontractor shall comprise of the following: 2.1PART-1: General Technical Specifications The General Technical Specifications shall be the "SPECIFICATIONS FOR ROAD AND BRIDGE WORKS (FOURTH REVISION, August 2001)", as corrected in the original issued by the Ministry of Road Transport and Highways (MORT & H) formerly known as the Ministry of Surface Transport (Roads Wing), Government of India and published by the Indian Roads Congress. 2.2PART-11: Supplementary Technical Specifications The Supplementary Technical Specifications shall comprise of various Amendments/Modifications/ Additions to the "SPECIFICATIONS FOR ROAD AND BRIDGE WORKS" referred to in PART - I above and Additional Specifications for particular item of works not already covered in PART-1. . 1A particular clause or a part thereof in "SPECIFICATIONS FOR ROAD AND BRIDGE WORKS (FOURTH REVISION, August 2001)" as corrected in the original referred in PART-1 above, where Amended/ Modified/Added upon, and incorporated in PART-II, referred to above, such Amendment/Modification/Addition supersedes the relevant Clause or part of the Clause. 2.2.2TheAdditionalSpecificationsshallcompriseofspecificationsforparticularitemof works not already covered in PART-1. 2.2.3When an Amended /Modified/ Added Clause supersedes a Clause or part thereof in the said Specifications, then any reference to the superseded Clause shall be deemed to refer to the Amended/Modified/Added Clause or part thereof. 2.2.4In so far as Amended/Modified/Added Clause may come in conflict or be inconsistent with any of the provisions of the said Specifications under reference, the Amended/Modified/ Added Clause shall always prevail. 2.2.5ThefollowingClausesinthe"SPECI FI CATI ONSFORROADANDBRI DGEWORKS (FOURTH REVI SI ON, August 2001)", " have been amended/modified/added upon. 102, 108, 109, 110, 112, 121, 123, 124, 201, 202, 301, 304, 305, 306, 401, 406, 501, 507, 509,801,803, 901, 903, 1006, 1007, 1010, 1014, 1502, 1503, 1509, 1513, 1703, 1704, 1705, 1706, 1707, 1709, 1713, 1802, 1804, 1806, 2005, 2009, 2504, 2706, 3004, 3100.Specifications for road & bridge work 2001 shall be followed for respective road and bridge works. 2.2.6Additional Specifications The following Clauses has been added tothe "SPECI FI CATI ONS FOR ROAD AND BRI DGE WORKS (FOURTH REVI SI ON, Aug. 2001)". 1.Appendix-I (Embankment construction with Fly Ash/Pond Ash) 2.Appendix-II (Specification for Modified Binder) 3.Appendix-III (Specification for Expansion Joints) 2.2.7In the absence of any definite provisions on any particular issue in the aforesaid specifications, referencemaybemadetothelatestcodesandspecificationsofIRCandBISinthatorder. Whereeventhesearesilent,theconstructionandcompletionoftheworksshallconformto soundengineeringpracticeasapprovedbytheEngineerandincaseofanydisputearisingout oftheinterpretationoftheabove,thedecisionoftheEngineershallbefinalandbindingon the Contractor. AMENDMENTS / MODIFICATIONS/ADDITIONS TO EXISTING CLAUSES OF GENERAL TECHNICAL SPECIFICATIONS Clause 102 DEFINITIONS The following abbreviations shall be added in this Clause: "MORT&H "Ministry of Road Transport and HighwaysClause 108.4 Delete first two sentences. Clause 109.9 Delete2nd and 3"1 sentence and add the following "setting out of the road alignment and measurement of angles shall be done by using total station". Clause 110 Encumbrances in Construction Area, including Trees and Utilities - Replace whole of this clause with the following: Clause 110.1 The contractor shall be responsible to coordinate with service provider / concerned authorities for cutting of trees, shifting of utilities and removal of encroachments etc. and making the site unencumbered from the project construction area required for completion of work. This will include initial and frequent follow-up meetings / actions / discussions with each involved service provider / concerned authorities. The contractor will not be entitled for any additional compensation for delay in cutting of trees* shifting of utilities and removal of encroachments by the service provider / concerned authorities. Payment for cutting of frees and shifting of utilities as required by the concerned department shall be made by the Employer. Clause 110.2 Drawings scheduling the affected encumbrances such as trees and services like water pipes, sewers, oil pipelines, cables, gas ducts, electricity lines, accessories, telephone poles and OFC cables etc. included in the contract document shall be verified by the contractor for accuracy of scope. Clause 110.3The Employer will make payments to the respective service provider / authorities for cutting of trees and shifting of utilities, wherever required. The contractor will obtain necessary approval from such Authorities after payments by the Employer and also in cases where payments are not required to be made for such shifting. The Employer will also write to all concerned departments/ service provider organization for expediting and facilitating cutting of trees, shifting of utilities and removal of encroachment etc. Clause 110.4 Any services affected by the Works must be temporarily supported by the Contractor who must also take all measures reasonably required by the various bodies to protect their services and property during the progress of the Works. It shall be deemed to be part of the Contract and no extra payment shall be made for the same. Clause 110.5 The Contractor may be required to carry out certain works forand on behalf of the various bodies and he shall also provide, with the prior approval of the Engineer, such assistance to the various bodies as may be authorized by the Engineer. Clause 110.6Payment For coordinating the work of cutting of trees, shifting of utilities and removal of encroachments etc., the contractor will be paid a lump-sum amount per km. of the section. Such amount will be deemed to cover all coordination work plus any risk associated with delay, disruption and the need to adjust the program due to delay in tree cutting and shifting of utilities and removal of encroachments etc. Clause 112.1 General Delete the last sentence and add the following: Two weeks before undertaking work which would involve any obstruction whatsoever to traffic the Contractor shall submit, for the Engineers approval, a Traffic Control Plan. Theplanshallinclude: i.Typical drawings for temporary diversions in accordance with Sub-Clause112.3ii.Typical details of arrangements for construction under traffic including details of traffic arrangements proposed to be in place after the cessation of work each day. Special consideration shall be given in the preparation of the Traffic Control Plan to the safety of pedestrians and workers and delineation of the roadway at night. Temporary diversions will be constructed only with the approval of the Engineer and will generally only be constructed at bridge sites where new bridges are to be located on the existing road alignment. Road works shall generally by constructed under traffic." Clause 112.2This clause shall read as under: "For widening and strengthening of the existing carriage-way when the widening is concentric and where part width of the existing carriageway is proposed to be used for passageoftraffic,paved shoulder shall be provided on one side of the existing road with the following minimum requirement to be provided by the contractor: i)At least one 5-5 m lane to remain open to traffic at all time.ii)The surface used by the through traffic shall at all time be a firm Bituminous compacted surface free of pot holes and other defects. iii)The maximum continuous length over which construction under traffic may take place shall be limited to 750 m. However in longer stretches, passing places of 7m width with bituminous surface of alteast 50 m. long shall be provided at every 0.75 km. interval. iv)The treatment for paved shoulders shall consist of providing 200 mm thick granular sub-base course overlaid with 300 mm thick WBM layer and treated with 20 mm pre-mix carpet v)Construction activity shall be restricted to only one side of the existing road. In case of eccentric widening of existing two lane to four lane, the additional two lanes shall be constructed first upto the stage of Dense Bituminous Macadam for a minimum length of 2 km. and traffic diverted to it, and only thereafter the required treatment to the existing carriageway including construction of median shall be taken up.Treatment to the shoulders by providing Granular sub base, WBM and PC shall be measured under clause 401, 404 and 509 and paid for. These rates shall include full compensation for construction including supply of materials, labour, tools etc. and maintenance of surface. Clause121FIELDLABORATORY Clause 121.3Laboratory Equipment This Clause shall read as under: The following items of laboratory equipment shall be provided in the field laboratory." A: General (i) Balance (a)7 kg to 10 kg capacity semi-self indicating Electronic2 Nos.Type- Accuracy 1 gm (b)500 gm capacity semi-self- indicating Electronic Type 2 Nos. Accuracy0.01gm. (c)Pan balance 5 kg capacity Accuracy 0.5 gm.3 Nos. (d)Platform Scale - 300 kg capacity1 No.(ii)Ovens-Electrically operated, thermostatically controlled (a) From 100C to 220C Sensitivity 1C 1 No.(iii)Sieves: as per I.S. 460-1962 (a)I.S. Sieves 450 mm internal dia of sieve sets as per ISI of 2 Sets required sieve sizes complete with lid and pan(b)I.S. sieve 200 mm internal dia (brass frame and steel or 2 Setsbrass wire cloth mesh) consisting of sieve sets of required sieve sizes complete with lid and pan (iv) Sieve shaker capable of taking 200 mm and 450 mm dia1 Nosieves electrically operated with time switch assembly (As per IS) (v) 200 tonnes compression testing machine 1 No.(vi) Stop watches 1/5 sec- Accuracy2 Nos. (vii)Glassware comprising of Beakers, Pipettes, dishes,1 Dozmeasuring cylinders (100 to 1000 cc capacity) glass rodsand funnels, glass thermometers range 0C to 100Cand metallic thermometers range upto300C (viii) Hotplates 200 mm dia (1500 watt)2 Nos.(ix)Enamel trays (a)600 mm x 450 mm x 50 mm6Nos. (b)450 mm x 300 mm x 40 mm 6 Nos. (c)300 mm x 250 mm x 40 mm6 Nos. (d)Circular plates of 250 mm dia 6 NosB: For Soils(i) Water still1 No. (ii)Liquid limit device with and A-S.T.M grooving tools as per2 Nos.IS-2720 (iii) Sampling pipettes fitted with pressure and suction inlets, 10 1 set capacity (iv) Compaction apparatus (Proctor)as per IS 2720 (Part 8) 2 Nos. complete with collar, base plate and hammer (v)Modified AASHTO compaction apparatus as per I.S. 2720 2 Nos. (Part 7) 1974 or Heavy Compaction Apparatus as per IS complete with. collar, base plate hammer (vi) Sand pouring cylinder with conical funnel and tap and 6 Nos. complete as per I.S. 2720 (Part 28) 1974 including modifiedequipment (vii)Sampling tins with lids 100 mm dia x 75 mm ht 1/2 kg24 Nos.capacity and miscellaneous items like moisture, tins withlid(50grams)etc. (viii) Lab C.B.R. testing equipment for conducting CBR testing, 1 setload frame with 5 Tonne capacity, electrically operated withspeed controlas per I.S. 2720 (Part 16): (ix) Standard Penetration test equipment2 Nos.(x)Speedy moisture meter complete with chemicals2 Nos. CFor Bitumen and Bituminous Mixes (i) Constant temperature bath for accommodating bitumen test1 No. specimen, electrically operated and thermo- statically controlled. (ii)Penetrometer automatic type, adjustable weight arrangementand needles as per I.S. 1203-1958 (iii)Soxhiet extraction or centrifuge type apparatus complete 1 No.with extraction thimbles with solvent and filter paper (iv)Laboratory mixer including required accessories1 No. (v)Marshall compaction apparatus automatically operated as per 1 set ASTM 1559-62 T complete with accessories (vi)Distant reading thermometer. 1 No.D For Cement, Cement Concrete and Materials (i) Water still1 No. (ii)Vicat needle apparatus for setting time with plungers, as per1 No. I.S. 269-1967 (iii)Moulds a)150 mm x 300 mm ht cylinder with capping component As reqd.b)Cubicalsl50mm, 100 mm (each size)As reqd.(iv)Concretepermeability apparatus.1 No. (v)High frequency mortar cube vibrator for cement testing1 No. (vi)Concrete mixer power driven, 1 cu ft capacity1 No. (vii)Variable frequency and amplitude vibrating table size 11 No. metre x 1 metre, as per the relevant British Standard(viii)Flakiness index test apparatus1 No. (ix)Aggregate impact test apparatus as per VS 2386 (Part 4) 1963.1 No. (x)Los Angeles abrasion apparatus as per IS. 2386 (Part 4) 1963 1 No. (xi) Flow table as per IS 712-19731 No. (xii) Equipment for slump test4 Nos. (xiii)Equipment for determination of specific gravity for fine and 4 Nos. coarse aggregate as per IS : 2386 (Part 3) 1963. (xiv)Compression and flexural strength testing machine of 200 T2 Nos. capacity with additional dial for flexural testing (xv)Core cutting machine with 10 cm dia diamond cutting edge2 Nos. (xvi) Needle vibrator4 Nos. (xvii)Air entrapment meter1 No. (xviii) 05 Cft, 1 Cft cylinder for checking bulk density of As required aggregate with tamping rod (xix) Soundness testing apparatus for cement1 set E. For Control of Profile and Surface Evenness (i)Total Station1 No. (ii)Precision automatic level with micrometer attachment 2 sets (iii)Distomat or equivalent1 set (iv)Theodolite- Electronically operated with computerized1 set output attachment. (v)Precision staff 3 sets (vi)3-meter straight edge and measuring wedge3 sets (vii)Camber templates 2 lane (a)Crown type cross-section1 set (b)Straight run cross-section (viii) Steel tape2 sets (viii) Steel tape(a) 5 m long2 sets (b)10mlong2 sets (c)20mlong2 sets (d)30mlong2 sets Clause 121.7Tins clause shall be read as under: The cost of provision of field laboratory including supply of laboratory equipment and also provision of adequate number of qualified personnel, erection, maintenance and running of laboratoryincluding all consumable like chemicals and reagents shall be deemed to have been included in UK contractprice. Clause 123PROVIDING AND MAINTAINING WIRELESS COMMUNICATION SYSTEM Substitute the existing clause by the following: ContractorshallprovidemobilecellularphonesforEngineerandEmployerfortheentire periodofcompletion.Totalnumberofmobilecellularphonesshallnotbemorethanthree. Airtime shall not be more than 10 hours per month per cellular phone. Cost of this provision is treatedasincidental to work and no additional payment will be made. Clause 124PROVIDING AND MAINTAINING VEHICLES FOR THE ENGINEER The heading of this clause shall read as under: "PROVIDING AND MAINTAINING VEHICLES FOR THE ENGINEER AND EMPLOYER" Clause 124.1ScopeThis clause shall read as under: "The work covers providing and maintaining of hard top passenger cars and/or hard top jeeps for use by the Engineer and the Employer as described under the Bill of Quantities. Clause124.2Description Para I of this Clause shall read as under: "The passenger cars shall be petrol/diesel run, A/c Ambassador Cars or equivalent having cylinder capacity of minimum 1400 cc for senior personnel of the Engineer and Project Director of the Employer. The hard top jeeps shall be 4W drive Maruti Gypsy model MG 410 or equivalent for other personnel of the Engineer and other staff of the Engineer. The number of vehicles to be provided by the contractor shall be decided by the Engineer/Employer at various times, out of the total provision in the bill of quantities and indicated in writing." Clause 124.4Withdrawal of Vehicles The first sentence for this Clause shall read as under: The contractor shall withdraw particular vehicle/vehicles for the non-use by the Engineer/Employer if so directed by the Engineer. Clause 124.5 In line 2, replace "Vehicle day" by Vehicle month". Further add the following at the end of this clause. "Average mileage per month shall not exceed 3000 Kms per vehicle".Clause 124.6Rate Add the words 'and Employer" after the word "Engineer' in second lineClause 201CLEARING AND GRUBBING Clause 201.1Scope Delete the last sentence and replace with as under: "Clearing and grubbing shall be performed less than one month in advance of earthwork operations and in accordance with the requirements of these specifications. Areas requiring clearing and grubbing shall be determined by the Engineer." Clause 201.4 Disposal of Materials Replace "1000m" with5000m in the second paragraph, last sentence. Clause 201.5 Measurements for Payment Delete the last two sentences in first paragraph and the whole of second and third paragraph and replace as under: Cutting of trees upto 300 mm in girth measured at 1 meter above ground including removal of stumps and roots and trimming of branches of trees extending above the roadway shall be considered incidental to the clearing and grubbing operations and no separate payment shall be made for the same. Removal of stumps and roots of trees of girth above 300 mm and back filling to required compaction shall be measured in terms of number of stumps of trees and will be payable. Clause 201.6Rates Clause 201.6.1Delete "as well as stumps left over after cutting of trees carried out by another agency" from the second sentence. Replace "1000m" with "5000m" in the last sentence. Add the following paragraph: "The removal from site and disposal of all materials obtained from clearing and grubbing operations, which, in the opinion of the Engineer cannotbe used or auctioned, shall be included in the Contract unit rate"" Clause 201.6.2Replace "1000m" with "5000m" in last sentence. Clause 202.5Disposal of Materials Substitute 'lead of 1000 m" by '5000 m,' wherever appearing this clause. Clause 202.7Rates Delete the last sentence of the paragraph and replace with: "These will also include excavation and back filling where necessary to the required compaction and for handling, piling and disposal of the dismantled materials with all lifts and leads as specified in Sub-Clause 202.5. The cost of cartage of materials with no salvage valueto disposal sites upto a lead of 5000 m is deemed to be included in the rates for dismantling." Clause 301 EXCAVATION FOR ROADWAY AND DRAINS Clause 301.1 Scope Insert the following between the words "roadway** and "side** in the second line: "road shoulders, verge, medians". Clause 301.3.7This Clause shall read as under: "In works involving widening of existing pavements or providing paved shoulders, the existing shoulders/verge/median shall be removed to its full width. The subgrade material within 0.5m from the lowest part of the pavement shall be checked for density which should not be less than 97% as pertable300-2. In case the density is found to be less than 97%, then the subgrade shall be loosened, excavated and recompacted as per Clause 305 to a density not less than 97% of maximum dry density determined according to IS:2720 (Part 8). Any unsuitable material encountered in BUS portion of subgrade shall be removed and replaced with suitable material and compacted in accordance with C3ausc 305." Clause 301.3.11Disposal of excavated materials Delete this sub-clause and replace with: "All the excavated materials shall be the property of the Employer. Suitable material obtained from the excavation of the roadway, shoulders, verges, drains, cross drainage works, etc. shall be used fori)Filling for roadway embankments.ii)Filling existing pits in the right of way as directed by the Engineer, including leveling and spreading, with all lifts and lead up to 5000m.iii)for landscaping of the road as directed by the Engineer, including levelling and spreading, with all lifts and lead up to 5000m. Unsuitable and surplus material, which, in the opinion of the Engineer cannot be used in the works, shall be removed from site by the Contractor and disposed off at the approved location in accordance with all statutory requirements as approved by the Engineer." Clause 301.8Read item(i) of last Para as 'loosening, excavating and recompacting'. Read unit of item (v) of last Para as km cu.m. in place of cum for disposal of samples materials beyond initial lead of 5000m. Clause 301.9 Rates Clause 301.9.1 In item (ii) replace "1000m" with "5000m" Add the following after item (vi): "(vii) The removal from site and disposal of all surplus or unsuitable materials obtained from excavation operations, which, in the opinion of the Engineer cannot be used in the Works, shall be included in the Contract rate". Clause 301.9.2 This clause shall read as under: "The contract unit rate for loosening and recompacting at subgrade level dial! include full compensation for loosening to the specified depth, removing the loosened soil outside the roadwayexcavation, rolling the surface below, breaking the clods, spreading the excavated soil in layers, watering where necessary and compacting to the requirements." Clause 301.95Replace "1000m" with "5000nT in the first sentence. Clause 301.9.6 Replace "1000m" with "5000m" in the first sentence. Clause 304EXCAVATION FOR STRUCTURES Clause 3043.4 Preparation of Foundation In Para 2 and 3 of clause 304.3.4 substitute 'concrete M-10' in place of 1: 3 : 6 nominal mix'. Clause 304.5.1 Replace 1000mwith 5000m in item (v). Clause 304.5.3Replace 1000m with 5000m in last line. Clause 305 EMBANKMENT CONSTRUCTION Clause 305.2.1Physicalrequirements Replace the existing table 300-1 by the following: Table 300-1 DENSITY REQUIREMENTS OF EMBANKMENT AND SUBGRADE MATERIALS. Sl. No.Type of work Engineering properties of samples remolded as per IS 2720 Part 8) Max dry density Cohesion (Kg/Soon) Angle of internal min. friction (Degree) 1. Embankment up to 3m bright, not subjected to extensive Not less than 152 -- 2. Embankments exceeding 3 in height and upto 6 m height Not less than 1-60 -- 3. Subgrade and earthen shoulders/verge/backfill Not less than 1.75 -- 4. High embankment (embankments exceeding6m height) Approaches to ROB and flyover Not less than 1.96 0.1027 Clause 305.2.1.6 Add new sub clause. "Materials used as subgrade in embankment shall have a 4 day soaked CBR value minimum 7. Clause 305.2.2. Borrow materials Para 1 of this Clause shall readas under: "No borrow area shall be made available by the Employer for this work. The arrangement for the source of supply of the material for embankment and subgrade as well as compliance to the different environmental requirements in respect of excava tion and borrow areas as stipulated, from time to time, by the Ministry of Environmental and Forest, Government of India and the local bodies, as applicable shall be the sole responsibility of the Contractor." The Table 300-2 shall read as under: Table 300-2Compaction requirements for embankment and subgrade Type of Work/Material Relative compaction as %age of maximum laboratory dry density as per Subgrade and earthen shouldersNot less man 97 Embankment a) Upto6mheight b) exceeding 6 m height Not less than 95 Not less man 97 3. Expansive clays a) Subgrade and 500 mm portion just below the subgrade b) Remaining portion of embankment Not Allowed Not less man 90 Para 8 of this Clause given below Table 300-2 shall read as under: "The contractor shall at least 7 working days before commencement of compaction submit the following to the Engineer for approval: i)The Values of maximum dry density and optimum moisture content obtained in accordance with IS:2720 (Part 8) for each fill material he intends to use. ii)The graphs showing values of density against moisture content from which each of the values in (i) above of the maximum dry density and optimum moisture content were determined. iii) Thedrydeasity-moisture content-CBR relationship for each of the fill materials he intends to use in the subgrade'. Clause 305.3 Construction OperationsClause 305.3.4 Compacting ground supporting embankment / subgrade Para 1 of this clause shall read as under Wherenecessary,neoriginalground shall be levelled, mixed with water and then compactedbyrolling to facilitate placement of 1st layer embankment and its compaction in accordance with QIC requirement as given in table 300.2. Add the following sentence at the end of Para 2. "Where necessary to facilitate compaction of the subgrade to 97% relative compaction as stated above, a further depth of maximum of 0.20 meter thickness shall be loosened, watered and compacted in accordance with Clause 305.3.5 and 305.3.6 to not less than 95% of maximum dry density, determined in accordance with IS:2720 (Part I)." Clause 3053.6Compaction Insertin3^i line of second Para of this clause: "15-30 tonne weight having tyre pressure of at least 7 kg7sq.cm" in place of "adequate capacity capable of achieving required compactions". Clause 305.4.3Earth work over existing road surface Replace item (i) with: "If the existing road surface is of a bituminous type and lies more man 500mm below formation level, the same shall be scarified to a depth of 50mm below the underside of the bitumen, or more if specified, so as to provide an ample bond between the old and new material. Where the existing road surface is less than 500mm below formation level, the existing surface shall be prepared for overlay in accordance with Clause 401.4.1" Clause 305.9.1Insert "including removal of top soil after word 'materials' appearing in first line of item(v)." Clause 305.9.6Clause Read "5000 m" in place of "1000m" in the last sentence. Clause 306 SOIL EROSION AND SEDIMENTATION CONTROL Clause 306.4Measurement for payment Substitute Clause 306.4 as follows: "All temporary sedimentation and pollution control works shall be deemed as incidental to the earthwork and other items of work and as such no separate payment shall be made for the same." Clause 401GRANULAR SUB-BASE Materials Clause 401.2Materials Clause 401.2.1Delete last sentence of Para 1 and add the following. The material shall be freefrom organic or other deleterious constituents and conform to the Grading I given in Table 400-2." Delete Para 2 of Clause 401.2.1. Clause 401.3The clause shall read as follows: It shall be ensured prior to actual execution that the material to beused in the sub-base has a minimum CBR value of 30% when compacted and finished. WhendirectedbyEngineer,thisshallbeverifiedbyperformingtestsinthelaboratory. TheCBRtestsshallbeconductedonspecimensoakedfor4daysandcompactedto98% of the maximum dry density as per IS:2720 (Part 8). Clause 406WET MDC MACADAM SUB-BASE/BASE COURSE Clause 40.2.1.1Add at the end of 1" Para. The fraction of material passing through 4.75 mm sieve shall be crusher run screening only. Clause 406.3.3Preparation of mix Delete last sentence of Para 1 of Clause 406.3.3.Clause 406.3.4Spreading of mix Substitute first sentence of Para 2 of this clause by " The mix shall be spread by a paver finisher. Clause 501.3Mixing Fist sentence shall read as under:"Premixed - hot mix plant of minimum capacity of more than 120 Cum per hour. Clause501.5.3Spreading Add following sentence after para-3 The temperature of mix at the time of laying shall be in the range 120 -145 degree Celsius. Clause 501.8PREPARATION OF SURFACE Clause 501.8.3.2 In the last sentence replace "1000m" with "5000m". Clause 501.83.4 Laying the Profile Corrective Course Clause 501.83.4.1 This Clause shall read as under "The surface on which profile corrective course is to be laid shall be thoroughly swept clean of dust and any other extraneous material using mechanical broom and dust collected removed or blown off using compressed air except in places where mechanical means cannot reach." "Afterpreparing the granular surface as in Clauses 501.8.3.1. 501.8.8.3.2 and 501.8.3.3, the profile corrective course with materials as per Clause 501.8.2.37501.8.2.4 shall be laid and compactedto the requirement of particular specification Clause. Where a bituminous profile corrective course is to be laid over primed granular surface, a tack coat conforming to Clause 503 shall be applied prior to laying profile corrective course." Clause 501.8.3.4.2 This Clause shall read as under: "An existing bituminous surface shall be prepared as per Clauses 501.8.33 and 501.8.3.4.1. The bituminous profile corrective course shall be laid after applying tack coat conforming to Clause 503, and compacted to the requirement of specification Clause." Clause 501.8.8.1In the last sentence replace "1000m" with 5000m". Clause 507DENSE GRADED BITUMINOUS MACADAM Clause507J2 Materials Clause 507.2.1 This clause shall read as under: The Bitumen shall be paving bitumen of Penetration Grade 60/70 complying with Standard Specifications for Paving Bitumen- IS:73 Clause 507.2.2Coarse Aggregates i) Delete the words from 2nd line of 1s Para "crushed gravel". ii)Delete the entire Para 2 of Clause 507.2.2 iii)From the table 500.8 .statement against * sha ll read as under.: Aggregate should satisfy both the tests value of Los Angeles Abrasion Value and Aggregate Impact Value. Clause 507.3.3Insert the following paragraph between existing paragraph 3 and 4. Mix design shall be carried out in accordance with the modified Marshall method described in Asphalt Institute Manual MS-2. Clause 509BITUMINOUS CONCRETE Clause 509.2.1 This clause shall be read as under Bitumen shall be paving bitumen of penetration grade 60/70 as per IS Specificationfor paving bitumen IS-73 and it shall be modified in accordance with IRC publication SP-53. Clause 509.2.41a sentence shall read as follows:- "Filler shall consist of finally divided hydrated lime or cement as approved by the Engineer". Clause 3100Reinforced Earth. Clause 3101This clause shall read as under: (a) Scope of works : The work includes detailed design for the entire reinforced earth structure for different sectional heights, supply and erection of reinforcing elements, supply &. placement of fascia panels and all associated components as per the requirement of the proposed technology and approved design and supervision including supervision of earthwork and pavement works for effectiveness of RET. The design shall take into account the Earthquake/seismic factor. The work also includes preparing, submitting & getting approval to all the designs & method statement along with program to match with over all completion of the work. The reinforced Earth retaining walls shallbe designed to cater for all the design toads of National Highway traffic and other design criteria specified in IRC codes. The design of reinforced earth retaining wall shall be based on the actual site conditions and shall match with roe approved construction drawings of flyovers / ROB. Interested bidders are requested to visit the project site and carryout necessary Geotechnical investigation and submit a realistic design, after the award of work. In case the design of reinforced soil structure needsstrengthening/improvement of existing ground, detailed proposals shall be incorporated in the design. The top offoundation beam should be all be at least 1 mtr. below the finished ground level. (b)Eligibility Conditions The proposed RET shall have proven adoption with regard to durability. Bidders / Approved sub-contractor shall furnish documentary proof for satisfactory performance of their methodology for at least 10 years. The Bidder / Approved sub-contractor shall have successfully completed atleast one project of construction of the reinforced earth retaining walls of height not less than 10m for flyovers/ROB in India. Interested Bidders / Approved sub-contractor must have successful experience in the design, supply of all components, construction and supervision of complete reinforced earth retaining walls. (c)Technology of the reinforced soil structure: The agency shall submit details of technology, its design principles, durability and details of its adoption on at least one Project inIndia. (The detailed design has to be got approved from the NHAI/Consultant before the execution of this work). The technology and design/drawings must be certified by the principals. In absence of the relevant Indian standards, the design shall confirm to relevant British Standards. The design shall take into account the Earthquake/seismic factor. The design and execution of RET work shall generally confirm to specifications and criteria laid down in Ministry of Road Transport and Highways, specifications for road and bridge works^"1 revision, 2001) and special report No. 16, state of the Art: Reinforced soil structures applicable to road design and construction published by IRC in 1996. Clause 3102This clause shall read as under: Material Specifications: The materials proposed to be used in this work shall meet the requirements of thepatented reinforced soil technology to be adopted by the agency for this work, which will be furnished by the Agency along with the tender. However, the material shall also meet the following broad specifications: i)Reinforcing Elements: The reinforcing element proposed to be used shall conform to the relevant Indian standards, if available. In the absence of relevant Indian standards, the material shall conform to relevant available British standards meeting ultimate and serviceability requirements. The standard to which the material to be used for reinforcing elements shall be clearly specified in the proposal. Clause 3104This clause shall read as under: Facia Material: The facing shall be of precast reinforced concrete panels M-35 grade with aesthetic finish as per approved drawing. The panels shall be machine finish and shall be manufactured by the approved sub-contractor who will be supplying reinforcing element and has successfully completed at least one project of construction of retaining walls of height not less than 10 m. for flyovers / ROBs in India. The facing should be designed to cater to maximum transversal, vertical and longitudinal flexibilit y to cater to seismic and ground movements. Clause 3106This clause shall read as under:Method of Measurement: The payment shall be made based on the area of the facing panels above the foundation beams. The rate shall include the cost o f foundationbeam, capping beam, reinforcing elements, facing panels, all accessories, ground treatment, if required, cost of labour, materials, handling, storage, erection, supervision etc. for complete works (excluding earth fill, its compaction and drainage system). Clause 801TRAFFIC SIGNSClause 801.1.2 This clause shall read as under; "All road signs shall be of retro-reflectorised type and made of high intensity grade with encapsulated lens type reflective sheeting vide Clause 801.3, fixed over aluminium sheeting as per these specifications." Clause 803ROAD MARKINGS Clause 8033Deleted.Clause 901GENERALClause 901.1This clause shall read as under: "All materials to be used, all methods adopted and all works performed shall be strictly in accordance with the requirements of these Specifications. The Contractor shall set up a field laboratory at locations approved by the Engineer and equip the same with adequate equipment and personnel in order to carry out all required tests and Quality Control work as per Specifications and/or as per Clause 121 and/or as directed by the Engineer. The list of laboratory equipment and the facilities to be provided shall be as per Clause 121 and shall be got approved from the Engineer in advance. Clause 901.5This Clause shall read as under: "The Contractor shall provide necessary co- operation and assistance in obtaining the samples for tests and carrying out the field tests as required by the 'Engineer* from time to time. This may include provision of laboratory, equipment, transport, consumables, personals, including labour, attendants, assistance in packing and dispatching and any other assistance considered necessary in connection with the tests." Clause 903QUALITY CONTROL TESTS DURING CONSTRUCTIONClause 903.4Tests on Bituminous Constructions Clause 9015 Clause903 Clause 903.4Clause 1006 InTable900-4,substitute"TestsforqualityofbinderasspecifiedinrelevantIS"under Test column for "Quality of binder" InTable900-4,seri alNo.6forDenseBituminousMacadam/SemiDenseBituminous ConcreteandfarBituminousConcreteaddthefollowingattheendinthefrequency column: "10% of the density tests shall be done on edges." Clause 1006CEMENT The first Para of this Clauseshall read as under: "Cement to be used in the works, shall be any of the following with the prior approval of the'Engineer': a) Ordinary Portland Cement 33 grade conforming to IS:269- b) Ordinary Portland Cement 43 grade, conforming to IS :8112. c)Ordinary Portland Cement 53 grade, conforming to IS: 12269.(i) Delete from the first sentence "crushed gravel. and 5* line. Delete Para 4 and 5 from Clause 1006." Clause 1007COARSE AGGREGATES (i) Delete from the first sentence crushedgravel inert material" appearing in 4 (ii) Add the following at the end of the Clause "Primary and secondary stone crusher should be employed for getting proper size and grading of coarse aggregates." Clause 1010WATER In para (C) the permissible limit for Chlorides (Cl) shall be read as "250 mg/lit for structures having length more than or equal to 30 m." Clause 1014STORAGE OF MATERIALS Clause 1014.3 Aggregates The following shall be added to this Clause: "Aggregates shall be stored or stockpiled in such a manner that segregation of fine and coarse sizes will be avoided and also that the various sizes will not become intermixed before proportioning. They shall be stored, stockpiled and handled in such a manner that will prevent contamination by foreign materials." Clause 1502MATERIALS This Clause shall read as under: "All materials shall comply with the requirements of IRC-87. Material and components used for formwork shall be examined for damage or excessive deterioration before use/reuse and shall be used if found suitable after necessary repair. Only steel formwork shall be used. The steel used for forms shall be of such thickness that the forms remain true to shape. All bolts should be countersunk. The use of approved internal steel ties or plastic spacers shall be permitted. Structural steel tubes used as support for forms shall have a minimum wall thickness of 4 mm." Clause 1503DESIGN OF FORMWORKClause 1503.2The following shall be added to this clause "For distribution of toad and toad transfer to the ground through staging, an appropriately designed base plate must be provided which shall rest on firm sub-stratum". Clause 1509RE-USE OF FORMWORK This Cause shall read an under: "After forms are stripped, all materials to be reused shall be thoroughly cleaned. Holes bored through sheathing for form ties shall be plugged by driving in common corks or foamed plastics. Patching plaster may also be used to fill small holes. After cleaning and before refixing, each formwork shall be got approved from the Engineer. Formwork and staging shall be so used so as to maintain quality of the exposed surface. However, if in the opinion of the Engineer, any particular panel/member has become unsatisfactory for use at any stage, the same will be rejected. All bent steel props shall be straightened before reuse. The maximum deviation from straightness is 1/600 of length. The maximum permissible axial loads in used props shall be suitably reduced depending upontheir condition. Clause 1513RATE Add the following at the end of the first para:'The unit rate shall also include all costs for preparation of erection scheme, designs of falsework and formwork and their approval." Clause 1703GRADES OF CONCRETE Add the following at the end of this Clause. The concrete mixes leaner than M 15 shall be called as nominal mix concrete. "Nominalmixconcrete isthatconcreteforwhich,concreteisnottobedesignedbytests andinwhichtheproportionsofmaterialsareinaccordancewiththedrawingandthe specification clause mentioned below: i)All the materials for this concrete shall conform to section 1000 of MORT&H. ii)Minimumcementcontentandmaximumwatercementratioforabove saidnominalmixconcreteshallconformtoclause1703.2Table1700-3(A) of MORT&H. iii) MixingofabovesaidnominalmixconcreteshallconformtoClause 1708ofMORT&H. iv) Transporting, Placing and Compaction of above said nominal mix concrete shall conform to clause 1709 of MORT&H Specifications. Clause 1704PROPORTIONING OF CONCRETE Add the following at the end of this Clause. "In proportioning concrete, the quantity of both cement and aggregate shall be determined by weight Where the weight of cement is determined by accepting the manufacturer's weight per bag, a reasonable number of bags shall be weighed separately to check the act weight. Where cement is weighed from bulk stock*at site and not by bag, it shall be weighed separately from the aggregates. Water shall either be measured by volume in calibrated tanks or weighed. AH measuring equipment shall be maintained in a clean, and serviceable condition. Their accuracy shall be periodically checked". "It is most important to keep the specified water- cement ratio constant and at its correct value. To this end, moisture content in both fine and coarse aggregates shall be determined as frequently as possible, frequency for a given job being determined by the Engineer according to the weather condit ions. The amount of mixing water shall men be adjusted to compensate for variations in the moisture content For the determination of moisture content in the aggregates, IS:2386 (Part ID) shall be referred to. Suitable adjustments shall also be made in the weight of aggregates to allow for the variation in weight of aggregates due to variation in their moisture content". Clause 1704.4Additionalrequirement In para (a) substitute "0.06%" for "0.1%", "0.06%" for "0.2%; and : O.I%" for "0.3% for the three items respectively. Clause 1705ADMIXTURES This Clause shall read as under: "Dulytestedadmixtures/additivesconformingtoIS:6925andIS:9103(without replacementofcement)maybeusedsubjecttosatisfactoryprovenuse,withthe approvaloftheEngineer.AdmixturesgeneratingHydrogenorNitrogenandcontaining chlorides, nitrates, sulphides, sulphates and any other material liable to affect the steel or concrete shall not be permitted" "Thegeneralrequirements,physicalandchemicalrequirementsshallbeasperClause 1012." Size of Coarse AggregateTable1700-7 in this clause shall read as under: Components Maximum Nominal Size of these Aggregate (mm) i)RCC well curb20 ii)RCQPCC well steining40 iii)Wellcaporpilecap 40 solid type piers & abutments iv)RCC work in girders, slabs,20 kerb, approach slab, piers andabutments,pier/abutment caps, pilesv) PSC work 20 vi)PCC in bottom plug and top 40 plug/intermediate plug vii) ROC work in wearingcoat 12.5 and handrailsviii)Any other work As specified or asdirectedby the Engineer Clause 1707EQUIPMENT Para 1 of this Clause shall read as under: "Unless specified otherwise, equipment for production, transportation and compaction of concrete shall be as under": a)Forproductionofconcrete. i)Batching and mixing of the concrete shall be done in a concrete batching and mixing plant fully automatic with a minimum capacity of 15 cum. per hour. The plant shall be approved by the Engineer". ii)In special cases, for culverts, the Engineer may allow mixing of concrete by a diesel or electrically operated mechanical mixer with integrated weigh batching facility having a capacity of 500 litres and automatic water measuring system." Para 3 of this clause shall read as under: Measurement of cement + 3 percent of quantity of cement in each batch Measurement of water3 percent of quantity of water in each batchMeasurement of aggregate 3 percent of quantity of aggregate in each batch Measurement of admixture 3 percent of quantity of admixture in each batch.Transporting, Placing and Compaction of Concrete Add the following paragraph at the end of 2nd para of clause 1709. For placing Concrete with Pumps Pipe Lines from the pump to the placing area should be laid out with a minimum of bends. For large concrete placements standby pumps shall be available. Suitable valves (air release valves, shutoff valves etc.) shall be provided as per site needs. The pumping of concrete shall be preceded by a priming mix to lubricate the pump andpipeline. A rich mix of creamy consistency shall be required for lubricating the pipelines. Continues pumping shall be done to the extent possible. After concrete has been placed the lines and all related equipment shall be cleaned immediately. A plug sponge ball shall be inserted in the end near the pump and shall be forced through the line by either water or air pressure. Pipes for pumping should not be made from materials, which can harm concrete; Aluminium alloy pipelines shall not be used. Clause 1713PROTECTION AND CURING Clause 1713.1 Water Curing Add the following at the end of para I. "Wherever possible, use of water sprinklers or perforated pipes shouldbe encouraged for curing of concrete. Such arrangement must be maintained for a minimum period of 14 days after concreting." "Approved concrete curing compounds should be preferred where water curing cannot be done reliably". Clause 1802MATERIALS Clause 1802.2 Sheathing Add the following at end of the Clause. "Where dummy core or cable is not provided during concreting, the diameter of sheathing shall be at least 10mm more than required otherwise." Clause 1804WORKMANSHIP Clause 18043.1 Post-tensioning The following para shall be inserted between the 5th and the 6th para. "The steel sheaths or duct formers shall be suitably tied to secondary reinforcement or to properly located withdraw able through-shutter bolts, precast concrete blocks or similar effective means, in such a manner that they do not give rise to excessive friction when the steel is being tensioned. Clause 1806TENSIONING EQUIPMENT Add the following at the end: "Before initial use and subsequently at suitable intervals, the prestressing equipment shall be checked to determine any variation from the normal values during use. So far as these variations depend upon external influence (e.g. temperature in the case of oil jacks) they shall be taken into account". Clause 2005ELASTOMERIC BEARINGSClause 20053Acceptance Specifications In para 5, substitute the words "Engineer or his authorised representative" for the word "Inspector,". Clause 2005.3.5 Inspection Certificate In para 4, substitute the words "Engineer or his authorised representative" for the word "Inspector, authorised by the engineer". Clause 2009MEASUREMENTS FOR PAYMENT Add the following after para 2. "Paper bearings shall be measured in square metres". Clause 2504 Pitching/Revetment on Slopes The heading of this clause shall read as under Pitching/Revetment on slopes and filter media. Clause 2504.2.2 Filter Media Para 1 of this clause shall read as under: The material for the filter shall consist of sand, gravel, stone or coarse sand to prevent escape of the embankment material through the voids of stone pitching/ weep holes in abutments as well as to allow free movement of water without creating any uplift head on pitching one or more layers of graded materials, commonly known as filter medium, shall be provided underneath the pitching. The material for filter media behind abutment shall conformto general guidelines given in Appendix 6 of IRC : 78 (Standard Specifications and Code of Practice for road bridges -Section V). Cause 2706 WEEP HOLE This clause shall read us under: "Weep holes shall be provided in solid plain concrete/reinforced concrete brick or abutments, wing walls, return walls as shown in the drawing or as directed by the Engineer to drive moisture from the back filling. Weep holes shall be provided with 100 mm dia A.C. pipe and shall extend through the mil width of concrete with slope of about 1 vertical:20 horizontal towards the draining face. Thespacingofweepholesshallgenerallybe1mineitherdirectionorasshowninthe drawingwithAclowestatabout150mmaboveAclowwaterlevelorgroundlevel whichever is higher or as directed by the Engineer". Clause 3004.2.5 This clause shall read as under: Measurements for Payment: Measurement for filling of pot holes and patch repairs of existing road shall be paid per Km/month during construction period. Clause 3004.2.6 Rate The contract unit rate for filling of pot-holes and patch repairs shall be in full compensation for: i)furnishing all materials required; ii) works involved in trimming, tacking, priming with cutback or emulsion; iii)all labour, tools, equipment and incidentals to complete the work in accordance with Specifications. (Appendix -I) (Page1 of 1) ADDITIONAL TECHNICAL SPECIFICATIONS FOR CLAUSE C1.305,EMBANKMENT CONSTRUCITION WITH FLY ASH / POND ASH The embankment shall be constructed with the following specifications. 1)Spreading of first layer of pond ash and bringing to appropriate moisture content. The cover soil and pond ash should be laid simultaneously to ensure the confinement to pond ash. i)Pond ash and cover material shall be spread in layers of uniform thickness not exceeding 200mm compacted thickness over the entire width of the embankment by mechanical means as specified in clause no. 305.3.5.1. Moisture control of both pond ash and cover shall be done as per clause no. 305.3.5.2. ii)For better compaction of pond ash it is preferred to have a vibratory roller with frequency range (1800-2200 rpm). For compaction of pond ash static as well as vibratory rollers may be employed. In case of vibratory roller the lift thickness shall be restricted to 25 cm compacted over the entire width of the embankment The pond ash should be compacted to 95% of its MDD and in no case its maximum density should be less than 1.2 gm/cc. Moisture content of pond ash at compaction will vary from OMC to OMC+2%. iii)After achieving the designed thickness of first pond ash layer, a cover soil layer of 40 cm compacted thickness shall be provided as per clause no. 305.iv)The same procedure shall be adopted for subsequent pond ash and soil layers, till the required height is achieved.v)Pond ash shall be used up to 500mm below GSB layer. vi)Width of side cover soil shall be 2000mm measured horizontally. The cover soil shall comprise soil as per clause 305. 2) Payment shall be made in accordance with Clause 305. (Appendix -11) (Page 1 of 1) ADDITIONAL TECHNICAL SPECIFICATION FOR MODIFIED BINDER 1)The scope, material, proportion requirements, mixing, quality control of materials etc. shall be as per IRC SP-53/1999. 2)The payment shall be made as consolidated rate of Bituminous Concrete as per Clause 509 3)List of approved suppliers of Modifier Bitumen as per MOST is enclosed as Annex-L 4)The particular type of modifier to be used on various projects is as per list enclosed atAnnex-11. 5)The modifier shall be used for 50% of the length of the project or as determined by the 'Engineer'. Annex-1 LIST OF APPROVED SUPPLIERS AS PER MOST Enclosure to letter No.RW/NH-34041/3()/90-S&R(VoLm) dated 21.8.2000. ANNEXURE-I LIST OF FIRMS PRODUCING PMB OR SUPPLYING POLYMERFOR MODIFICATION ALONG WITH INDICATION OF THE TYPEOF POLYMER USED/SUPPLIED BY-THEM S.No.Name of supplier/manufacturerType of modifier 1.M/s M.K. Petro Products (P) Ltd., Plastomer (EVA) LG-5, Thapar Chambcr-II, Modified Bitumen 6JB Opp. Kaiindi Colony, Ring Road,New Delhi-110014. 2.M/s Osnar Chemicals (P) Ltd., Plastomer (EVA) T.. Industries Estate, Sewree, Modified BitumenMumbnai-400015. 3.M/s Yegnan & Co..Plastomer (EVA) 101, Agarwal Chamber-lXModified BItumen Plot No.102, Sector-19, APMC Complex,Vashi, Navi Mumbai-400705. 4.M/s Solid Asphalt Industries,Plastomer (EVA) Plot No.42, Scctor 1, Sion-Panvel Highway, Modified Bitumen Neral, Navi Mumbai-400705. 5.M/s Tiki Tar Industries,Plastomer (EVA) 8t h Floor, Neptune Tower, Productivity Road,. Modified Bitumen Vadodra-390005 6. M/s Cochin Refineries Ltd.,Natural Rubber Post Bag No.2, Aambalamugal 682302Modified BitumenDistt. Modified Bitumen Emakulam, Kerala. 7.M/s Chennai Petroleum Corporation LimitedCrumb Rubber(Formerly: Madras Refineries Ltd.) Menali, Modified Bitumen Modified Bitumen Chennai-600068. 8.M/s Tinna Overseas LimitedChemically Treated A/181,, Mayapuri Industrial Area, Phase-II,Crumb RubberNew Delhi-110064 Modified Bitumen 9.M/s E.I.: Du Font India Ltd..Plastomer 701-724 Bonanza, 7t h Floor. B-Wing, (Ethylene Terpolymer) Sahar Plaza.Complex, Andheri-Kuria Road,Modified Bitumen Andheri(East). Mumbai-400059. 10. M/s Usha Lubes (P) Ltd., Plastomer (Low Density 6 A & B, Poonam, 6th Floor,Polyethylene)5/2 Russel Street,Modified Bitumen Calcutta-700071 11. M/s Gurusons Intemational (P) Ltd.Rubber (SBR) 108, SouthexPlaza-I, South Extension-II,Modified Bitumen New Delhi-110049. 12.M/s ATV Projects India (P) Ltd.. (SBS) D-8-MIDC Street-16. Mahul,Andheri (East), Mumbai-400093. 13.M/s National Organi Chemicals Industries Ltd.,(EVA) Thane-Belapur Road.P.O. Ghasoli. Navi Mumbai-400701. 14.M/s Shell India (P) Ltd., (SBS) S-3 International Trade Tower.Nehni Place. New Delhi-110019. 15.M/s Indian Petrochemical corporation Ltd., (LDPE)P.O. Petrocliemicals,Vadodara - 391346. 16.M/s Elf Atochem Gandhi Mansion, (EVA) 20 Altamount Road, Mumbai-400026. 17M/s Apcotex Lattices Limited(SBR) 49-53, Mahavir Centre,Plot No. 17, Sector-17. Vashi Navi Mumbai - 400073. LIST OF TYPE OF MODIFIER TO BE USED ON VARIOUS PROJECTS UNDER PHASE-11 S.No Name of Section / Contract Package Contract Nos. Polymer modified 1 CONSTRUCTION OF FOUR LANE ROAD OVER BRIDGE (Km.22.850 to Km.24.650) INCLUDING APPROACHES AT BUTIBORI ON NAGPURHYDERABAD SECTION OF NH-7 IN LIEU OF EXISTING LEVEL CROSSING NO. 113 IN THE STATE OF MAHARASHTRA NS-29 MH ELASTOMERIC THERMOPLASTIC ANNEXURE-II (Appendix -III) ADDITIONAL TECHNICAL SPECIFICATIONS FOR EXPANSION JOINTS 1720/4 No. RW/NH- 340591/I/96-S&R 1720.5Dated, the 31st March, 1997 To The Chief Engineers, PWD of all States/UTs, (dealing with National Highways and other Centrally Financed Schemes), Director General, Border Roads, Director General (Works), Central Public Works Department, Chairman, National Highways Authority of India, The Engineer-in-Chief, Municipal Corporation of Delhi Subject:Modified Interim Specifications for Expansion Joints In suppression of this Ministry's Circular letter of even number dated 28th June, 1996 on above subject, please find herewith enclosed modified interim specifications for expansion joints for adoption on all National Highway and other centrally sponsored bridge projects. The provisions in these specifications will prevail whenever they arc at variance with the existing specifications. Salient points of modified interim specifications are mentioned below: 1.1.Component of various types of expansion joints which are ment ioned in Annexure-11 shall be imported to ensure quality and performance. 1.2.Details of type, profile and major dimensions of edge beams and central beams of Strip Seal Joints and Module" Strip/Box Seal Joints shall conform to those indicated in the sketches enclosed herewith in Annexure-111. 1.3.Special type of modular expansion joint should be provided for bridges having span length more than 120m and/or involving complex movements/rotations in different directions/planes, with prior appr oval ofthe Ministry. 1.4. Criteria for adoption of different types of expansion joints has been modified as indicated in Annexure-I. 1.5. Specification for strip seal joints contained in Clause 2607 of this Ministry's "Specifications For Roads &. Bridge Works" stands substituted by those given herein.List of Indian Suppliers of various types of expansion joints including their foreign manufacturer/collaborator is given in Annexure-11. Supply of expansion joints may be obtained on thebasis of competitive bidding from amongst the manufacturers/suppliers of expansion joints mentioned therein, subject to their satisfying the requirements of the specifications. 3.While arranging supply of expansion joints, a warranty of troublefree performance for atleast ten years and free rectification of defects/replacement, if any, during this period may be insisted upon from the contractor/suppliers for all types of joints except for buried joints and filler joints. It is requested that the contents of this circular be brought to the notice of all officers in your department concerned with National Highways and other Centrally sponsored schemes. 5.You are also requested to send your comments/suggestions, if any, for further improvements of the interim specifications. Please acknowledge receipt of this letter. GOVERNMENT OF INDIAMINISTRY OF SURFACE TRANSPORT(ROADS WING) MODIFIED INTERIM SPECIFICATIOS.FOREXPANSION JOINTS Privahan Bhavan, 1, Parliament Street, New Delhi-110001 1720/6 I. BURIED JOINT Clause 2604 of MOST Specification for Road & Bridge Works (Third Revision) may be deemed modified as under: 1This joint shall consist of continuously laid bituminous/asphalted surfacing over the joint gap bridged by a steel plate resting freely over the top surface of the deck concrete. 2.The width of the joint gap shall be kept as 20 mm.. 3.The steel plate shall conform to wieldable structural steel as per IS: 2062. The plate shall he 12 mm thick and 200mm wide. The plate shall be made of minimum number of pieces (not exceeding two pieces per traffic lane width) welded together to form the required length. 4.8mm dia, 100mm long nails, spaced at 300mm centres along the centre, line of the plate shall be welded to the bottom surface of thesteel plate to protrude vertically into the joint gap in order to prevent dislodging of the plate. 5.The plate and the nails shall be protected against corrosion by galvanizing or any other approved anti-corrosive coating with a minimum thickness of 100 micron. These shall be completely free of oil, rust loose paint or other similar material before application of anti corrosive coating. 6.The concrete surface shall be free from any loose material and cleared of any grease, oil. Paint etc. and the surface shall be sand blasted, clean of all laitance and level true, and prior to placement of the steel plate. 7Theplateshallbeplacedsymmetricaltothecentrelineofthejointanditshallbeensuredthattileplate does not get displaced from its position while laying the wearing course. 1720/7 II. ASPHALTIC PLUG JOINT 1.Asphaltic plug joint shall consist of a polymer modified bitumen binder, carefully selected single size aggregate, closure/bridging metallic plate and heat resistant foam caulking/backer rod.General Requirements: 2. 1. The joint shall extend to the full depth of the wearing course down to structural concrete. Where needed, recess may be cut into the deck slab concrete to accommodate the minimum required de pth of the joints. 2.2. The Joint shall be provided in the entire width of the structure including kerb and/or footpath. A recess in the kerb and/or footpath shall be made to allow the joint to pass beneath them. The expansion gap in the adjoining kerbs and/or footpaths shall be sealed with a suitable sealant such as polysulphide sealant. 2.3. Expansion joint shall cater for a horizontal movement of 25mm and vertical movement of 2mm. This shall be certified by the manufacturer/supplier of the joint. .The minimum width (in traffic direction) of the joint shall be 500mm and maximum width shall be 750mm. 2.5. Minimum depth of joint shall be 75mm and maximum depth shall not exceed 100mm. 2.6. The joint shall be capable of performing satisfactorily, within the temperature (ambient)rangeof-50 to 450 degree C. 3.Material: 3.1. Binder: The polymer modified bitumen binder shall have the capacity to fill the gaps and voids between single size aggregate and to impart flexibility to accommodate various design movements. It shall be a patented blend of bitumen, synthetic polymer, fillers and- surface active agent and shall be so formulated as to combine necessary fluidity for the installation process, low temperature flexibility and flow resistance at highambient temperatures. The binder shall satisfy following requirement: Softening Point:100deg. C. Minimum Core penetration at 25 deg. C 0.1mm (BS 2499):1000mm max.Flow resistance at 70 deg/ C, 5 hours (BS 2499):3mm max. Extension Test:5 cycle of extension to (block prepared to ASTM D II 90) :50 per cent at a rate ofand tested to limits BS 2499:3.2 mm/hat 25 deg.Safe heating temperature:210deg.C. 3.2. Aggregates: The aggregate shall be single size aggregate chosen from basalt granite, grit stone or gabro group. The nominal size of aggregate shall be 12.5mm for depths of joints upto 75mm and 20mm for joints of mope depths of joint. The aggregate shall not be flaky and the Flakiness Index shall not be more man 25 per cent. The aggregate shall satisfy following grading requirements : IS Sieve Designation Nominal size of aggregate 20mm 12.5 mm Per cent by weight passing the sieve 26.5mm100 19.0mm85-100100 13.2mm0-3585-100 09.5 mm0-70-35 06.3mm--0-7 02.3mm0-20-2 1720/8 Theaggregateshouldhavegood(i)PolishedStoneValue(PSV),(ii)AggregateAbrasionValue(AAV).Aggregate ImpactValue(AIV)and(iv)AggregateCrushValue(ACV).Inadditionsurfacecharacteristicsshouldpromoteproper adhesion. The fo llowing are the required values : PSV >60AAV < 05AIV