Laying of 50 mm dia GI pipeline

Amount

Dismantling G.I. pipes (external work) including excavation and refilling trenches after taking out the pipes, manually/ by mechanical means including stacking of pipes within 50 metres lead as per direction of Engineer-in-charge :

15 mm to 40 mm nominal bore

Providing and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc. External work

25 mm dia nominal bore

40 mm dia nominal bore

50 mm dia nominal bore

65 mm dia nominal bore

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:

25 to 40 mm nominal bore

50 to 80 mm nominal bore

Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :

25 mm nominal bore

40 mm nominal bore

50 mm nominal bore

65 mm nominal bore

80 mm nominal bore

Painting G.I. pipes and fittings with two coats of anti-corrosive bitumastic paint of approved quality :

25 mm diameter pipe

40 mm diameter pipe

50 mm diameter pipe

65 mm diameter pipe

Providing and fixing G.I. Union in G.I. pipe including cutting and threading the pipe and making long screws etc. complete (New work) :

25 mm nominal bore

40 mm nominal bore

50 mm nominal bore

65 mm nominal bore

80 mm nominal bore

Construcitng masonary chamber 60x60x45 cm inside, in hollow block work in cement mortar 1:4 (1 cement :4 coarse sand) for Gate valve complete with C.I double flap surfadce box 400x200x200mm (inside) with locking arangement and RCC top slab 1:2:4 mix (1 cement: 2 coarse sand : 4 graded stone aggregate 20 mm nominal size), i/c necessary excavation, foundation concrete 1:1.5:10 (1 cement : 5 fine sand : 10 graded stone aggregate 40 mm nominal size) and inside palstering with cement mortar 1:3 (1 cement : 3 coarse sand) 12 mm thick, finished with a floating coat of neat cement complete as per standard design:

With hollow block of 200mm thickness

M Abdul Hameed (BID ID -47963)

PRASANTA KANRAR (BID ID -48011)

Mantu Mondal (BID ID -47984)