Improvement of piped water supply to Flat Bay Ranchi Basti at Baratang.

Amount

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

50 mm dia nominal bore

40 mm dia nominal bore

25 mm dia nominal bore

15 mm dia nominal bore

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

50 mm nominal bore

40 mm nominal bore

25 mm nominal bore

15 mm nominal bore

Providing and fixing C.P. brass bib cock of approved quality conforming to IS:8931 :

15 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

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

50 mm diameter pipe

40 mm diameter pipe

25 mm diameter pipe

15 mm diameter pipe

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

Constructing masonry Chamber 60x60x75 cm inside, in cement concrete hollow block size of 400x100x200mm 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 20mm 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 :

C. KANDASAMY