CWE/CHM-51/2026-27 SPECIAL REPAIR TO ROADS OF CERTAIN UNITS AT CHANDIMANDIR MIL STN UNDER GE CHANDIMANDIR

M&L for Preparation of black top surfaces by brushing with wire brushes for removing caked mud etc, sweeping with brooms and finally fanning the cleaned surfaces with gunny bags to remove all loose dirt etc complete all as specifed and directed by Engineer-in-Charge.

Applying evenly a tack coat of Cationic Bitumen Emulsion (RS-1) conforming to IS: 8887 at a rate of application of 0.2-0.3 kg/sqm on bituminous surface as specified in Table 500-5 of MoRT&H specification for Road and Bridge works 2013, using mechanical sprayer after cleaning of existing surface complete all as specifed and directed by Engineer-in-Charge.

M&L for Bitumenous concrete (BC) 30 mm thick (consolidated thickness) layer confirming to clause 507 of MoRT&H specifications for road and bridge work (Fifth Revision) including cost of coarse aggregates, fine aggregates, filler with 5.4 % binder (VG-30) contents by weight of total mix, crushed aggregate of grading 2, anti stripping agent, warm mix additives (quantity, quality and grade as per the approved job mix formula) etc, cleaning and pre-heating of the mineral aggregate, filler & bitumen of specific temperature throughly mixing with binder of specified bitumen contact, anti stripping agent, warm mix additives as per mix design in hot mix plant (batch type) of 100-120 TPH capacity, carrying the hot mixed materials by means of tipper, trucks or any other approved and and suitable arrangements, laying and hot premixed materials over the prepared surface by means of paver finisher

Contd.. including manual operation as and when required for proper grade, including level and camber through rolling with power roller 8 to 12 tonnes smooth wheeled, vibratory and tendom roller with necessary hand packing and pinning to give an even surface including running expense of all plants and machineries, inclusive of proper traffic control during laying to the satisfaction of Engineer-in-charge, required quality control tests at required interval etc complete in all respects complete all as specified and as directed by Engineer-in-Charge. Notes: (i) Job Mix formula as per clause No. 505.3.3 of MORT&H specification for road and bridge work (Fifth Revision) for bituminous concrete shall be got designed from NIT/CTL/Govt Engg Collage and shall be got approved from GE in writing well before commencement of work without any financial effect to the department. Also the bitumen content shall not be less than 5.4 % by weight of total mix as per clause 507.2.5 of MoRT&H specifications (Fifth Revision).

(ii) The cost of materials, transportation, Job mix formula from lab and testing charges for various tests as required are included in the unit rate quoted by the contractor. (iii) Cost of Filler i.e. rock dust, hydrated lime or cement is deemed to be included in unit rate. (iv) If qty of binder contents is less than the qty as specified in respective items of BOQ, it shall be adjusted at supply only rates of paving bitumen @ Rs. 65.00 Per KG and if qty of binder contents is more than the qty as specified in respective items of BOQ no adjustment shall be made. (v) After spreading of mix as per clause 507.4.7 of MoRT&H specification entire surface during the operation shall be rolled with road roller 8-10 tonnes (smooth wheeled) followed with vibratory road roller of 8-10 tonnes static weight, followed by finish rolling with 6 to 8 tonnes smooth wheeled tandem roller as per clause No. 507.4.8 of MoRT&H specifications (Fifth Revision) and the cost of the same shall be deemed to be included in the quoted rate.

M&L for Scarifying or picking gravelled, macadam or bituminous macadam surfaces in area not exceeding 400 sqm and not exceeding 50 mm deep complete all as specified and as directed by Engineer-in-charge.

Applying evenly a prime coat of Cationic Bitumen Emulsion SS1 confirming to IS: 8887 at a rate of application of 0.7 - 1 kg/sqm on surface of WMM/ WBM as specified in Table 500-3 of MoRT&H specification for Road and Bridge works 2013, using mechanical sprayer complete all as specifed and directed by Engineer-in-Charge.

M&L for Providing, laying & Compaction of bituminious, macadam (BM) compacted thickness not exceeding 75 mm thick conforming to clause 504 of MoRT&H specification for Road and Bridges works (Fifth Revision) using mechanically crushed stone aggregates and granual material etc of grading II as per Table 500-7 of MoRT&H specification for Road and Bridges work (Fifth revision) Premixed with bituminious binder bitumen grade VG-30 @3.4% (percent by weight of total mix) prepared in batch type Hot Mix Plant transported to site by tippers, laid over a previously prepared surface with paver finisher equipped with electronic sensor to the required grade, level and alignment and rolling with smooth wheeled, vibratory and tandem rollers as per specifications to achieve the desired compaction and density complete all as specified and directed by Engineer-in-charge.

Material and Labour for Repair to potholes of area not exceeding 1.00 square metre each and depth not exceeding 30 mm, sweeping free from dust and mud or water, scouring sunken surfaces in roads, paths, etc., cutting around edges to at least 25 mm in depth, making good by applying tack coat with bituminous primer @ 5 kg per 10 sqm, putting in premix as specified for thin bituminous carpet (2 cm thick), well rammed and sealed with premix sand seal coat (6.8 kg binder with 0.06 cum of sand, again well rammed (including supply of premixed binder and sand), complete all as specified and as directed by Engineer-in-charge.

M&L for preparing bituminous surfaces of road and marking 2.50 mm thick centre lines, stop lines, dashes, arrows etc. and the like on roads pavements with hot applied thermo plastic road marking paint of approved colour confirming to BS 3262-1989 with special applicator machine all as per manufacturer's instructions complete all as specified and directed by Engineer-in-Charge.