SPECIAL REPAIR TO ROAD WITHIN DHQ OTM, HOVERPORT CUM JETTY, VIKRAM ENCLAVE AND AZADHIND NAGAR AT CGDHQ-8 AT HALDIA STATION UNDER GE(I) (CGN) KOLKATA

Amount

Scarifying or picking gravelled, macadam or bituminous macadam surfaces in area not exceeding 400 sqm, depth of pot hole exceeding 50 mm but not exceeding 100 mm including removing and stacking not exceeding 50 metres and including rolling over the broken surfaces using 8 to 10 tonnes power roller to required camber and gradient complete all as specified and as directed.

M & L for applying primer on the surface of non-bituminous granular base course preparatory to the superimposition of bituminous treatment coat with cationic bitumen emulsion SS-1 grade at the rate of 10 kg per 10 Sqm of surface complete all as specified and as directed.

M & L for 7.5 cm thick (compacted thickness) WBM, with coarse aggregates of granite, trap or basalt of grading 2 (63 to 45 mm size) or of grading 3 (53 to 22.4 mm size), spread, rolled and compacted to required gradient and camber with three wheel-power roller of 80 to 100 kN capacity or an equivalent vibratory roller complete all as specified and as directed.

Preparing unsurfaced water bound macadam surfaces by brushing with wire brushes for removing caked mud etc., sweeping with brooms and finally fanning the cleaned surface with gunny bags to remove all loose dirt etc. complete all as specified and as directed.

M & L for bituminous macadam not exceeding 75 mm thickness (compacted thickness) using hot mix plant and mechanical paver with 4% binder (paving grade bitumen VG-30 grade) content by weight of total mix, rolled and compacted with power roller 8 to 10 tonnes to required camber and gradient complete all as specified and as directed. Note :- (i) Bituminous macadam shall be laid using self propelled hydrostatic paver finisher and preparation of mix shall be using hot mix plant and transporting the mix in tipper. (ii) The exact bitumen content required shall be determined as per IRC 27: 2009. The adjustment in rate due to variation in quantity of bitumen if any shall be priced at the rate of ₹55 per kg.

Repair to potholes any depth, exe 30 mm and not exceeding 1 sqm each including sweeping free from dust and mud, or water, scoring sunken surfaces in roads, paths, etc., cutting around edges to at least 25 mm in depth, making good by applying tack coat at the rate of 05 kg per 10 Sqm, putting in bituminous macadam well rammed and sealed with bitumen 9.8 kg per 10 sqm blinded with 0.09 cum stone chippings, 6.3 mm size and rolled and compacted with power roller 8 to 10 tonnes to required camber and gradient complete all as specified and as directed.

Preparing existing black top surfaces by brushing with wire brushes for removing caked mud etc., sweeping with brooms and finally fanning the cleaned surface with gunny bags to remove all loose dirt etc. complete all as specified and as directed.

M & L for applying evenly a tack coat with bituminous primer (paving grade bitumen VG-10 grade) @ 5 kg per 10 sq metres complete all as specified & as directed.

M & L for bituminous semi dense asphaltic concrete 40 mm (compacted thickness) using graded crushed stone aggregate premixed with binder (paving grade bitumen VG-30 grade) @ 5.5% by weight of total mix & hydraulic lime filler, rolled and compacted to required camber and gradient complete all as specified and as directed. Note :- (i) Semi dense bituminous concrete shall be laid using self propelled hydrostatic paver finisher and preparation of mix shall be using hot mix plant and transporting the mix in tipper. (ii) The exact bitumen content required shall be determined following the Marshall Mix Design procedure contained in the Asphalt Institute Manual MS-2 (Sixth Edition) as referred in case 3.5.3 of IRC 111: 2009. The adjustment in rate due to variation in quantity of bitumen if any shall be priced at the rate of ₹55 per kg.

Supply and fixing cat eye solar reflective type metal body alloy of size 100mmx100mmx20 mm with PAMA striplens reflector of model No DA 972.0 fixed with and including MS stud of suitable size as per manufacturer's instruction complete all as specified and as directed.

Providing and applying 2.5 mm thick road marking strips (retro-reflective) of specified shade/ colour using hot thermoplastic material by fully/ semi-automatic thermoplastic paint applicator machine fitted with profile shoe, glass beads dispenser, propane tank heater and profile shoe heater, driven by experienced operator on road surface including cost of material, labour, T & P, cleaning the road surface of all dirt, seals, oil, grease and foreign material etc. complete all as specified and as directed.

Excavating in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. or for cable laying or water supply pipes lines etc or not exceeding 10 sqm on plan and not exceeding 1.5 m in depth and getting out in soft/ loose soil complete all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm in soft/ loose/ hard/ dense soil complete all as specified and as directed.

Removing excavated material (soils) not exceeding 50 m and depositing where directed at a level n exc. 1.5 m above the starting point

M & L for cement concrete in foundation, filling and mass concrete in M10(Nominal Mix) using 40 mm nominal size graded crushed stone aggregate complete all as specified and as directed.

M & L for brick work with fly ash bricks of class designation 7.5 as per IS 12894: 2002, straight or curved on plan exceeding 6 m mean radius built in cement mortar 1:6 complete all as specified and as directed.

M & L for hardcore (broken bricks) of gauge not exceeding 63 mm, deposited, spread and levelled in layers not exceeding 15 cm thick, watered and rammed to a true surface complete all as specified and as directed.

M & L for cement concrete M7.5 (Nominal Mix) using 40 mm nominal size graded crushed stone aggregate 100 mm thick in sub base for laying tiles, pavings, floorings etc. all as specified and as directed.

Providing and laying 60 mm thick factory made cement concrete interlocking paver block of M35 grade conforming to IS 15658-2006 made by block making machine with strong vibratory compaction, of approved size, design & shape, cast in rubber mould, glossy finish of approved colour, laid in required colour and pattern over and including 50 mm thick compacted bed of coarse sand, filling the joints with fine sand etc. all complete as per the direction of Engineer-in-charge.

Material and labour for plastering 15 mm thick on fair faces of brick work or concrete surfaces (on vertical surfaces) in cement mortar 1:6 finished even and smooth without using extra cement complete all as specified and as directed.

M & L for preparation of newly plastered surface of wall and applying two coats cement base paint over one coat of primer complete all as specified and as directed.

NATIONAL CONSTRUCTION CO

Sabitri Jhunu Enterprise