Construction of 10,000 litre OHT at Thillainayagapuram in Azhinjimangalam Panchayat.

Earthwork excavation and depositing on bank with an initial lead of 10m and lift of 2m in the following classification of soils as directed by TWAD Board officers. Hard stiff clay, block cotton, hard red earth shales, murram, ordinary gravel, stoney earth and earth mixed with small size boulders for foundation SS 20B 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 in M30 GRADE using graded aggregtes of HBGs excluding cost of reinforcement, centering, shuttering strutting, but including cost of mixing concrete, placing, vibrating with mechanical vibrator, finishing, curing etc., complete as directed by TWAD Board officers. For items 1.5m to 4.5m below GL

For items 0 to 1.50m below GL

For items 0m to 4.5m above GL

For items 4.51m to 7.32 m above

For items above 7.32 m & up to 10.98 m 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 stiffeneq with welded MS angles of size 25mm x 25mm x3mm of boarding, laid over silver oak joints of size 10cm x 6.5cm spaceqat 90cm centre to centre and supported by casuarina props of 10cm to 13cm dia spaced at 75cm centre to centre complying with standard specifications etc., complete and as directed by PLANE SURFACES Below G.L.

Curved Surface 6.3 to 7.30m

Square column Below G.L.

Painting two coats with approved cement paint over one coat of priming coat over cement plastered exposed surface of the Reservoir including cleaning, preparing the surface and curing etc., complete and as directed by TWAD Board officers

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.

FabricatFabrication, supply, delivery and fixing of outside MS ladder of 45cm wide made out Fabrication, supply, delivery and fixing of outside MS ladder of 45cm wide made out of 50x50x6mm MS angle for sides and steps in 16mm MS plain rods fixed at 30cm centre to centre welded, jointed etc., providing with suitable side supports, clamps, and locking arrangements provided with one coat of red oxide paint for providing access to roof top of 60,000 lit. capacity OHT of suitable inclined length, including bottom anchorage and transportation and as directed by TWAD Board officers.

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 curing etc., to required height and clear width of 4Scm consisting of two Nos. of ve~ical post of 10cm x lScm and step slab of 25mm x 25mm etc., complete and as directed by TWAD Board officers. (Vide seperate Sheet)

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

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

50 mm GI pipes for inlet connection

50 mm GI pipe for delivery pipe

50 mm GM gate valve

50 mm Tee

50 mm GI Elbow

Ladder Lock Door With Lock and Key arrangements

OHT chlorination Arrangements

Earth work Excavation for Foundation in all soils and Sub Soil to full depth as may be directed except in hard rock requiring blasting but inclusive of shoring strutting and requiring the sides of foundation.

Cement concrete 1:3:6 mix using 20mm ISS metal including cost and conveyance of all materials to site and all labour charges for mixing, laying and curing etc complete

Providing Supplying of Rcc Precost Post 0.15x0.15x1.80 m height including Transporting Loading Unloading and Fixing for Post and Chainlink Labour Charges Etc Complete.

Providing supplying and Cost of ChainLink-2"x2"using10GaugeGalvanised Iron Wire (of all sizesincluding Transporting Loading Unloading and Fixing for Concrete work Labour Charges Etc Complete.

Earthwork excavation and depositing on bank with an intial lesd & lift in hard stiff clay, gravelly soil, shales, murrams earth mixed soil as per SS 20 B for foundation

Sand filling with good river sand including cost & conveyance of all materials to site and all labour charges for curing, compacting etc., complete.

Cement concrete in 1:4:8 mix using 40 mm metal used for foundation including cost & conveyance of all materials to site and all labour charges for curing, compacting etc., complete.

Supplying and erecting centering for sides and soffits including necessary supports and strutting upto 3.29 M height for plane surfaces as detailed below in all floors with all cross bracings using Mild Steel sheets of size 90 x 60 cm and 10 BG stiffened with welded Mild Steel angle of size 25mm x 25mm x 3 mm for boarding laid over silver oak joists of size 10cm x 6.50 cm spaced at abote 90 cm centre to centre and supported by casurina props of 10cm to 13 cm dia spaced at not more than 75 cm centre to centre etc. complete complying with the standard specificaiton. (Payment for centering shall be given after the concrete is laid)

Cement concrete in 1:2:4 mix using 20 mm metal used for Wearing Coat including cost & conveyance of all materials to site and all labour charges for curing, compacting etc., complete.

Filling the stones in soakpit incluiding the cost and conveyance of materials 40mm Metal

20mm Metal

Rcc Precast rings

Ring and RCC Cover Slab

Provision for Name Board

GST Amount for providing Service to Government Contract Works for the above Construction Works. { GST Amount is the Total GST Amount for total overall quoted amount above this row in column "BB" for all works in this package}