Maintenance of all Water Supply Pipe Lines at ITI Dollygunj Campus under CD-I, A.P.W.D., Port Blair.

Amount

Earth work in surface excavation not exceeding 30 cm in depth but exceeding 1.5 m in width as well as 10 sqm on plan including getting out and disposal of excavated earth upto 50 m and lift upto 1.5 m, as directed by Engineer-in- Charge:

All kinds of soil

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level :

1:2:4 (1 Cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 40 mm nominal size derived from natural sources)

1:4:8 (1 Cement : 4 coarse sand (zone-III) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources)

Centering and shuttering including strutting, propping etc. and removal of form work for :

Foundations, footings, bases for columns

Extra for making chequers of approved pattern on cement concrete floors, steps, landing, pavements etc. TERRAZO FLOORING

12 mm cement plaster of mix :

1:4 (1 cement: 4 fine sand)

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, i/c fixing the pipe with clamps at 1.00 m spacing. This includes testing of joints complete as per direction of Engineer-in-Charge. Internal Exposed on walls

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

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 - 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)

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

80 mm nominal bore

Providing and fixing gun metal non- return valve of approved quality (screwed end) :

80 mm nominal bore

Horizontal

Providing and fixing flange joint with double PPR flange including gasket with bolts and nuts etc complete as per the direction of Engineer-in-charge

63mm dia

75mm dia

90mm dia

Providing and fixing PPR Ball valve [Cold Water] of approved quality:

25 mm OD (SDR-7.4)

Providing and fixing PPR Gun Metal Gate Valve with C.I. Wheel of approved quality:

50mm nominal bore

63mm nominal bore

Constructing masonry Chamber 60x60x75 cm inside, in soild block 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 Solid block size 400 x 200 x 200mm.

M/s Ammu Construction (BID ID -46707)

Mega Engineers and Builders (BID ID -46835)

M/s Premier Steel Industries (BID ID -46986)