Improvement of water supply pipe line network at Kalipur and shibpur village by replacing damaged and small dia line wherever required

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 3 layer PP-R (Poly propylene Random copolymer) pipes confirming to IS:15801 UV stabilized & anti -microbial fusion welded, having thermal stability for hot & cold water supply, including all PP - R plain & brass threadedpolypropylene random fittings, including trenching, refilling & testing of joints complete as per direction of Engineer-in-Charge.External work

PN - 16 Pipe, 25 mm OD (SDR-7.4)

PN - 16 Pipe, 40 mm OD (SDR-7.4)

PN - 10 Pipe, 50 mm OD (SDR-11)

PN - 10 Pipe, 63 mm OD (SDR-11)

PN - 10 Pipe, 75 mm OD (SDR-11)

PN - 10 Pipe, 90 mm OD (SDR-11)

PN - 10 Pipe, 110 mm OD (SDR-11)

Providing and fixing PPR Unions

PPR Union 25 mm

PPR Union 40 mm

PPR Union 50 mm

PPR Union 63 mm

PPR Union 75 mm

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

20 mm nominal bore

40 mm nominal bore

50 mm nominal bore

65 mm nominal bore

80 mm nominal bore

Construction of hollow cement concrete block manhole in cement mortar 1:4(1 Cement :4 Coarse sand) with R.C.C top slab with 1:1.5:3 mix (1 cement :1.5 coarsw sand (Zone-III):3 graded stone aggregate 20 mm nominal size), foundation concrete 1:4:8 mix (1 cement : 4 coarse sand zone-III): 8 graded stone aggregate 40 mm nominal size), inside plastering 12 mm thick with cwmwnt mrtar 1:3 (1 cement: 3 coarse sand) finished with floating coat of neat cement and making channels in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) finished with a floating coat of neat cement complete as per standard design:

Inside size 90x80 cm and 45cm deep including C.I cover with frame (light duty) 455x610 mm internal dimensions, total weight of cover and frame to be not less than 38kg (weight of cover 23 kg and weihgt of frame 15kg):

Providing and fixing PPR Unions

PPR Union 90mm

PPR Union 110mm

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

100mm nominal bore

P R SINGARAM AND SONS