Construction of 60000 litre capacity OHT at Kumuttivilai in Nalloor Town Panchayat

Amount

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 Departmental 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 2 m

Second depth of 1 m

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

Cement concrete 1:4:8 (one cement four sand and eight aggregates) using 40mm HBGS for leveling course for foundation including, ramming, curing etc., complete as directed by Departmental officers

RCC 1:1½:3 (one cement, one and half sand and three aggregates) using 20mm HBGS excluding cost of reinforcement, centering, shuttering strutting, but including cost of mixing concrete, placing, vibration with mechanical vibrator, finishing, curing etc., complete as directed by Departmental officers -Footing

For items 0 to 1.50m below G.L.

For items 0m to 4.5m from G.L.

For items 4.51m to 7.32 m from GL

For items above 7.32m & up to 10.98m from GL

Supplying and cresting steel centering for sides and soffits 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 x 3mm of boarding, laid over silver oak joints of size 10cm x 6.5cm spaced at 90cm centre to centre and supported by casuarinas props of 10cm to 13cm dia spaced at 75cm centre to centre complying etc., complete and as directed by Departmental officers. Below G.L.

G.L. to 3.30m

Curved Surface 0 to 3.30m

Square column Below G.L.

Ground level to 3.30

Painting two coats with approved cement paint over one coat of priming exposed surface of the Reservoir including cleaning, preparing the surface and as directed by Departmental 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 Departmental officers. 8,10,12,16, 20,25 mm Ø .

Construction of RCC spiral staircase in RCC 1:1½:3 20 mm HBGS of 1.80 m Ø of required height for approach to the roof of SR with RCC hand rails as per type design including necessary earth work for providing foundation in CC 1:4:8 mix RCC footing 1:1½:3 mix, GL platform etc. including cost of steel reinforcement, fabrication charges, scaffolding charges, centering, precasting charges, cement painting etc complete. The staircase should be braced to the column of service reservoir at suitable interval etc complete.

Providing and fixing of RCC inner access ladder in RCC 1:1:5:3 (one cement, one and half sand and three aggregates) using 20mm HBG stone for 60000 litre capacity OHT including cost of reinforcement, placing grill in position, centering shuttering charges, mixing concrete curing etc., to required height and clear width of 45cm consisting of two Nos. of vertical post of 10cm x 15cm and step slab of 25mm x 25mm etc., complete and as directed by Departmental officers

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

Providing manhole cover of size 0.60 x 0.60m in RCC 1:1:5:3 with suitable reinforcement and 50x50x6mm MS angle fixed along edges and as directed by Departmental officers.

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

Supply and delivery of following PVC/GI pipes and specials - 90 mm PVC pipe

Earth work excavation and depositing on bank with initial lead of 2 metre narrow trenches for laying of pipes and refilling earth for water supply works in the hard stiff clay stiff black cotton hard red earth shales murram gravel stoney earth and earth mixed with small size boulders and hard gravelly soil as directed by the departmental officers.

Labour charges for laying of PVC/GI pipes and specials to proper line and level including jointing but excluding cost of pipes and jointing materials for plum bind for providing water supply works.