Construction of 1 lakh ltr Sump at Perukannankulam in Kasthurirengapruam Panchayat

Amount

Construction of 100000 litre Sump

Earth work excavation and depositing on bank with an initial lead of 10m and initial lift of 2m for foundation including shoring, strutting wherever necessary including hand bailing out water and all other incidental charges. etc. complete as directed by TWAD Board Officers as detailed below.

Hard stiff clay,stiff black cotton soil, hard red earth, shales, murams, gravel, stoney earth, and earth mixed with 50% fair size boulders and hard gravelly soil -SS20B

First depth of 2 m

Supply and filling the foundatiion and basement with clear river sand in layers complying with standard specification including consolidation and watering etc. complete and as directed by TWAD Board Officers.

Plain cement concrete with P.C.C 1:4:8 (one cement, four sand and eigth course aggregate) using 40 mm H.B.G stone for levelling course including cost of mixing cement, placing, ramming and curing etc., complete as directed by the TWAD Board Officers.

R.C.C M 30 Design mix (one part cement, 1.7 part sand and 3.2 part course aggregate) using 20 mm and 10mm size H. B.G stone (machine crushed) including mixing concrete using machanical mixer machine and vibrating with machanical vibrator, but excluding cost of steel reinforcement, fabrication and placing the grills in postion and the cost of centering and strutting but including curing, finishing etc., complete as directed by the TWAD Board Officers.

Above G.L

Below GL & upto 1.5 m

Supplying, fabricating and placing in position of RTS rods at all heights for reinforcement including the cost of steel and binding wire, labour charges etc., complete for all RCC works and as directed by TWAD Board Officers.

Centering for sides and soffits of R.C.C slab for plane surface / curved surface including strutting upto required height using MS sheets of size 90cmx60cm and BG 10 gauge, stiffend with welded MS angle of size 25mmx25mmx3mm laid over silver oak (country wood) joists of size 10cmx6.5cm (space at about 90cm c/c) and supported by casurina props of 10cm to 13cm dia spaced at 75cm c/c complying with standard specification etc., complete as directed by the TWAD Board Officers for the following items

Plain surface

Curved surface

Curved surface(round column)

Supply and fixing of CI manhole power with frame of size 0.60m x 0.60m (heavy duty)with locking arrangements as directed by TWAD Board Officers. The manhole cover frame and cover should be light weight conforming to IS 1726 / 1974

Supply and fixing of R.C.C ventilators with wire mesh.

Supplying and fixing RCC ladder inside the sump

Supplying and fixing MS ladder out side the sump

Providing cut stone set in C.M 1:3 for inlet pipe.

Refilling the outside of the sump with excavated earth(other then sand) complying with standard specification for filling the foundation including watering consolidation etc., complete as directed by the TWAD Board Officers.

Supply and delivery of CI D/F pipe and specials and other CI specials as per IS 7181/1986 and Is 1538/1984 and as amended from time to time for delivery at site of work including all taxes, duties, loading, freight, unloading and stacking at site etc complete (vide seperate sheet )

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 directly by TWAD Board officers.

Kather meeran (BID ID -1460345)