Improvement of GI pipe line at Phooltala Atterjig, Broun Valley and Shantipur at Kadamtala. SW - Replacement of damaged pipe line of different sizes at Phooltala, Atterjig, Shantipur at Kadamtala including providing and fixing GI pipe line with fitti

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

Above 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

80 mm dia 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

Providing and fixing G.I. Union in existing G.I. pipe line, cutting and threading the pipe and making long screws, including excavation, refilling the earth or cutting of wall and making good the same complete wherever required :

25 mm nominal bore

40 mm nominal bore

50 mm nominal bore

65 mm nominal bore

80 mm nominal bore

Constructing masonry Chamber 60x60x75 cm inside, in brick work in cement mortar 1:4 (1 cement : 4 coarse sand) for sluice valve, with C.I. surface box 100mm top diameter, 160 mm bottom diameter and 180 mm deep ( inside) with chained lid and RCC top slab 1:1.5:3 mix (1 cement : 1.5 coarse sand : 3 graded stone aggregate 20rnm nominal size ) , i/c necessary excavation, foundation concrete 1:5:10 (1 cement : 5 fine sand : 10 graded stone aggregate 40 mm nominal size) and inside plastering 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 common burnt clay F.P.S.(non modular) bricks of class designation 7.5

The Reef Constructions

K BABU

P R SINGARAM AND SONS