Construction of 60000 ltrs OHT 12M STG.HT including foundation to TNHB Colony in Sithalapakkam Panchayat

Amount

Earth work excavationand depositing on bank with initial lead and lifts of 2m in the following classification of soil as directrd by TWAD Board officers. First depth of 2m

Second depth of 1m

Sand filling for foundation with clear river sand including cost of sand watering, ramming and consolidation etc complete as directed by TWAD Board officers.

Cement concrete 1:4:8 (one cement four sand and eight aggregates) using 40mm HBGS for levelling course for foundation including the cost of mixing concrete, ramming, curing etc., complete as directed by TWAD Board officers.

RCC 1:1.5:3 mix using 20mm ISS HBG metal including cost and conveyance and all other labour charges etc complete. For items 1.5m to 4.5m below GL

For items 0 to 1.50m below GL

For items 0m to 1.5m above GL

For items 4.51m to 7.32m above GL

For items 7.32m to 10.98m above GL

For items 10.98m to 14.64m above GL

For items above 14.64m & up to 18.30m from GL

Supplying and erecting steel centering for sides and soffits I including necessary supports' and shuttering to the required height for RCC items using MS sheets of suitable size of BG.10 stiffened with welded MS angles of size 25mm x 25mm x3mm of boarding PLANE SURFACES Below GL

ABOVE G.L. to 3.30m

FROM FLOOR 3.30 TO 4.30 M

Curved Surface 0 to 3.30m from floor level

3.30 to 4.30m from floor level

Square column Below G.L.

Ground level to 3.30 m

Painting two coats with approved Exterior Emulsion paint over one coat of priming coat over cement plastered exposed surface of the Reservoir including cleaning, preparing the surface and curing etc., complete

Supplying, fabricating and placing in position of HSD steel rods for Reinforcement including the cost of steel and binding wire etc., complete and as directed by TWAD Board officers.

Supply delivery and fixing of staircase with M30 grade concrete for landings, MS ladder of 0.45m wide using 50x50x5mm MS angles for sides and steps at 0.30m c/c, with GI pipe handrails using 32mm GI pipes for railings and verical support at 0.45m C/c, MS flats (Size 40mm x 5mm ) for horizontal ties at 0.3m c/c and at bottom with Anchor fastener bolts of size 12mm x 75mm including cost of materials labour for fabrication of handrails fixing, painting etc., complete.

Providing and fixing of RCC inner access ladder in RCC 1:1.5:3 (one cement, one and half sane! and three aggregates) using 20mm HBG stone for OHT including cost of reinforcement, placing grill in position, centering shuttering charges, mixing concrete cu

Providing PVC ventilating arrangements mosquito proof nylon net with 110 mm PVC pipes and cowl and as directed by TWAD Board officers

Providing cut stone slab in CM 1:3 and as directed by RD officers

Providing manhole cover of size 1x1 0.60 X 0.60M in RCC 1: 1.5:3 with suitable reinforcement and 5O x 5O x 6mm MS angle fixed along edges and as directed by RD officers.

65mm Ø GI pipes for inlet connection

65mm Ø GI pipes for over flow pipe

65mm Ø GI pipes for scour pipe

65mm Ø GI pipe for delivery pipe

Refilling the foundation with excavated earth including consolidation as directed by the TWAD Board officers.

Labour charges for GI pipe connection to the OHT, for inlet, outlet, overflow and scour arrangements including cutting and threading, earth work excavation & refilling.

Earthwork Excavation for 90mm PVC pipe laying work including cost of Refilling work as per Standard Specifications 20B (in Rm)

Supply & Delivery of 90mm OD PVC Pipe as per IS 4985/2000 4.00 kg per Sqcm including cost & Conveyance of all materials & all Labour charges etc complete

Labour Charges for Laying & Jointing 90 mm pipe in Excavated Trench in Proper Camber

Supply & Fixing of 80mm Dia GM Gate valve including cost & Conveyance of all materials & all Labour charges etc complete

Supply & Fixing of 80mm Dia GM Tee including cost & Conveyance of all materials & all Labour charges etc complete

R SUJATHA