REPAIR/ MAINT OF ROAD AND BERMS OF OTM ACCN AT HAPPY VALLEY SHILLONG UNDER GE SHILLONG

Repair to potholes any depth, 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 5 kg per 10 Sqm, putting in bituminous macadam well rammed (including supply of bituminious carpet, binder and chhipping) and sealed with bitumen 9.8 kg per 10 sqm blinded with 0.09 cum stone chippings, 6.3 mm size depth of pot holes exc 30mm and rolled and compacted with power roller 8 to 12 tonnes to required camber and gradient complete all as specified and as directed.

Scarifying or picking gravelled, macadam or bituminous macadam surfaces in area exceeding 400 sqm, depth of pot hole exceeding 50 mm but not exceeding 100 mm 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 preparation of Unsurfaced water bound macadam 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 and applying evenly a priming/tack coat with bituminous primer at 10kg per 10 sq meters of paving bitumen (VG10) complete all as specified and directed.

Material and labour for providing premixed bituminous macadam laid/rolled and compacted to required gradient and camber using 8 to 10 tone capacity power roller (consolidated thickness 75mm or less) using paving bitumen (VG 30 Grade) @ 4% by weight of total mix complete all as specified and directed. Note:- (i) The exact bitumen content required shall be determined Mix Design procedure and approved by GE. The adjustment in rate on MINUS side variation in quantity of bitumen if any shall be priced at the rate of ₹95 per kg. No claim whatsoever shall be made for adjustment in plus side. (ii) 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.

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.

Material and labour for bituminous premixed semi-dense asphaltic concrete, 40mm consolidated thickness using 5.5% paving bitumen (VG 30 Grade) binder content any penetration by weight of total mix, mixed in central computerized hot mix plant and laid using mechanical self propelled paver and rolled and compacted with 8 to 12 tonne power roller to uniform surfaces with required camber and gradient complete all as specified and as directed. Note:- Semi dense asphaltic bituminous concrete shall be designed as per design mix. Contractor shall quote his unit rate considering the bitumen contents as 5.5 %. Any variation in binder content on minus side shall be adjusted at the rate of ₹95.00 per KG of binder. No adjustment in price shall be made if the variation is on plus side.

Material and labour for preparing bituminous surfaces of road and marking 2.5mm thick centre lines stop line dashe arrow etc and the like not exceeding 10cm wide on road pavement with hot applied thermo plastic road marking paint with reflectorizing glass beads on bituminious surface @ 250gms/ sqm area as per IRC: 35- 1997 of approved colour conforming to BS 3262-1989 with special applicator machine all as per manufacturers instruction complete all as specified and directed.

S&F in repair speed breaker of size 750mm X250 mm X75mm made out of ABS material with two highly reflective reflectors moulded in PMMA materials welded with ABS plate through ultrasonic welding process fixed on to the speed breaker so the dust and water can not touch reflectors inside and fixed complete all as specified and directed.

S&F in repair traffic convex mirror of of 60cm dia having 130 degree viewing angle made of polycarbonate material , brim and back holding plate is made of metal/FRB along with pole mounted brackets and pole 60mm dia made with galvanised steel pipe of suitable length fixed to the ground by means of PCC 1:2:4 type B2 (using 40mm dia graded stone aggregate) in foundation/filling (size 50cmx50cmx60cm) all as specified and as and as directed.