Replacement of Old GI distribution water line with New PP-R Pipes and Trans-installation of FRP Water tank at Residential colony, Dibrugarh Airport.

Amount

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 threaded polypropylene random fittings, including trenching, refilling & testing of joints complete as per direction of Engineer - in - Charge. External work

PN - 16 Pipe, 32 mm OD (SDR-7.4)

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

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

PN - 10 Pipe, 160 mm OD (SDR-11)

Providing and fixing PP-R (Poly propylene Random copolymer) Gate Valve identical and compatible with Pipe compound above, colour green, marking as per ISO 15874:2013 as per direction and satisfaction of Engineer-in-charge.

OD 32 mm, PN 25

OD 63 mm, PN 25

Providing and fixing C.I. sluice valves (with cap) complete with bolts, nuts, rubber insertions etc. (the tail pieces if required will be paid separately) : 100 mm diameter Class I

Providing and fixing gun metal non- return valve of approved quality (screwed end) : 80 mm nominal bore Horizontal

Constructing masonry Chamber 30x30x50 cm inside, in brick work in cement mortar 1:4 (1 cement :4 coarse sand) for stop cock, with C. I. surface box 100x100 x75 mm (inside) with hinged cover fixed in cement concrete slab 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size), i/c necessary excavation, foundation concrete 1:5:10 ( 1 cement : 5 fine sand : 10 graded stone aggregate 40mm nominal size ) and inside plastering with cement mortar 1:3 (1 cement : 3 coarse sand) 12mm 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

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 1:2:4 mix (1 cement : 2 coarse sand : 4 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 : With common burnt clay F.P.S.(non modular) bricks of class designation 7.5

Dismantling of existing FRP (Fiberglass Reinforced Plastic) water tank of capacity 70000 litres, including disconnection of inlet, outlet, overflow, and washout pipes; safe lowering and removal from the existing position; transportation to the new location (within colony premises as directed); reinstallation, reconnection of all plumbing lines, fittings, and accessories; testing for leakage and ensuring full operational condition; including all labour, materials, tools, scaffolding, and incidental charges complete as per direction of Engineer-in-Charge.

M & L for boring horizontally holes by manual method under road and dia of holes not to exceed 100 mm without damaging the existing road, getting out and disposal of excavated soil etc. within 50 m from the site all complete as per direction and satisfaction of Engineer-in-charge.

Bore size 63 mm -110 mm

Preparation of water distribution network plan including field survey, data collection, hydraulic design using approved software, and preparation of drawings and report complete as per direction of Engineer-in-Charge

PRAKASH SARMAH (BID ID -940895)

M/s Zeliezhu and Sons (BID ID -942016)

UTKRISHT CONSTRUCTION (BID ID -941458)