Name of Work:- Augmentation of water supply system at c us Dhanakgre under SHQ BSF Shillong
Sl. No.
Item Description
1
Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.
2
Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-Charge) of total coated thickness 0.50 mm (base metal of minimum 0.45 mm thickness with total coating thickness of 0.05mm) with zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12 metre or as desired by Engineer-in-charge. The sheet shall be fixed using self drilling /self tapping screws of size (5.5x 55 mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.
3
Providing and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc. External work 40 mm dia nominal bore
4
Providing and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc. External work 50 mm dia nominal bore
5
Making connection of G.I. distribution branch with G.I. main of following sizes by providing and fixing tee, including cutting and threading the pipe etc. complete :50 to 80 mm nominal bore
6
Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :40 mm nominal bore
7
Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :50 mm nominal bore
8
Providing and fixing gun metal non- return valve of approved quality (screwed end) :40 mm nominal bore Horizontal
9
Providing and fixing gun metal non- return valve of approved quality (screwed end) :50 mm nominal bore Horizontal
10
Painting G.I. pipes and fittings with two coats of anti-corrosive bitumastic paint of approved quality :40 mm diameter pipe
11
Painting G.I. pipes and fittings with two coats of anti-corrosive bitumastic paint of approved quality :50 mm diameter pipe
12
Providing and placing on terrace (at all floor levels) polyethylene water storage tank, IS : 12701 marked, with cover and suitable locking arrangement and making necessary holes for inlet, outlet and overflow pipes but without fittings and the base support for tank.
13
Modified Estimated Cost after using correction factor on DSR 2023 on account of GST @ 0.973
14
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