O and M Water supply work

Amount

Earth work excavation and depositing on bank with an initial lead 10m and lift of 2m the following classification of soils, bailing out water wherever necessary including providing danger lights etc., and as directed as per standard specification SS 20B and special specification. Hard stiff clay stiff block cotton hard red earth shales murrams gravely stoney earth mixed with 50% small size boulders and hard gravelly soils etc., complete as per as standard specifications and as directed by Officers.1st depth of 2m

2nd depth of 1m

Sand filling for foundation with crushed stone sand including consolidation ramming etc., complete as per standard specifications and as directed by TWAD officers

Plain cement concrete 1:4:8 (one cement four sand and eight course aggregates of 40mm size hard blue granite broken stone) for leveling course for foundation including the cost of mixing placing the concrete in position cosolidating finishing and curing etc complete as directed for works above 1.50m up to 4.50m depth below ground level.

Reinforced Cement concrete 1:1½:3 (One cement and hand sand and three blue course aggregates of 20mm size hard broken stone) for the following items. The rates excluding the cost of supplying, fabricating and placing in opposition of MS / RTS Grills for reinforcement and centering, strutting & shuttering but including cost of mixing consolidating finishing and curing the concrete etc complete as per as directed by the TWAD Board officers. (The rates including of testing the reservoir for the water tightness of the structure)Below G.L 1.50m depth to 4.50m depth

Below G.L Upto 1.50m depth

Above G.L 0m to 4.50m height

From 4.50m to 7.32m height

From 7.32m to 10.98m heightt

From 10.98m to 14.64m height

From 14.64m to 18.30m height

Centering for soffits of reinforced cement concrete slabs or plain surface including strutting upto 3m height using MS sheet of size 90cm x 60cm and BG 10 gauge stiffened with welded MS angles of size 25mm x 2mm x 3mm laid over silver oak (country wood) joints of 10cm x 6.5cm spaced at about 90cm c/c and supported by Casurina props of 10cm to 13cm dia at 75cm c/c complying with standard specification and as directed by the TWAD Board Officers.PLANE SURFACE Below G.L & Upto 3.30m height

From 3.30m to 4.30m height

From 6.30m to 7.30m height

From 10.30m to 11.30m height

CURVED SURFACE From 0m to 3.30m height

From 3.30m to 4.30m height

SQUARE COLUMN Below G.L & Upto 3.30m height

From 3.30m to 4.30m height

From 4.30m to 5.30m height

From 5.30m to 6.30m height

From 6.30m to 7.30m height

From 7.30m to 8.30m height

From 8.30m to 9.30m height

From 9.30m to 10.30m height

From 10.30m to 11.30m height

Painting two coats with approved emulsion over one coat of priming exposed surface of the reservoir including cleaning, preparing the surface and as directed by Departmental officers.

Supplying, fabrication and placing in position of TMT grills for reinforcement for various members including cost of steel for all RCC works etc., complete as per standard specifications and as directed by TWAD Board Officers.

Construction of RCC spiral staircase in RCC 1:1:5:3 (One cement 5 sand and 3 coase Aggregates) using 20mm HBGS of 1.80m diameter of required height for approach to the roof of service Reservior with RCC Handrails including earthwork excavation providing CC 1:4:8 mix RCC footting 1:1:5:3 mix GL platform etc., and also including cost of steel reinforcement fabrication charges scaffolding centering precasting charges cement painting etc., complete as per standard specification and as directed by Departmental Officers. The staircase shall be braced to the column of service reservior at suitable interval. (in the BOQ,quantity column the exact height to be mentioned from GL to roof slab bottom to get total value of work to be done.

Supply casting and fixing of hand rail at top of the OHT icluding steel centering cost of steel and all materials etc complete.

Supplying and fixing in position of 0.60x0.60m water light CI Man hole frame and cover of approved pattern at the roof slab and as directed. The man hole frame and cover should be of light duty and confirming to IS 1726-1974.

Supply and fixing of R.C.C (1:1.5:3) tank inside access ladder mado of 20mm size HBG metal including cost of all materials, centering, shutering, strutting, fabrication and placing in position of reinforcement, finishing and curing etc complete.

Supplying, delivery and fixing in position of following PVC / GI pipes and specials of approved quality and good variety excluding fixing charges etc complete. 80mm GI pipe B Class

80mm GM Gate valve

80mm GI Elbow

80mm GI Coupling

80mm Flange set

90mm PVC Pipe 6ksc

90mm PVC Elbow

90mm PVC Tee

Solvent cement

Earth work excavation and deposing on bank with an initial lead and lift in hard stiff clay stiff black cotton hard red earth shales murram gravel stoney earth mixed with small size boulders for laying of pipe line including refilling the trench with excavated earth etc complete.

Lowering of following pipes and specials to trench laying to proper grade and alignment etc complete. 80mm GI pipe B Class

90mm PVC Pipe 6ksc

WORKS CONTRACT S FRANCIS (BID ID -1275084)