Construction of OHT 1.00 LL Capacity 12m Staging Height at Chokkampatti Main Road in Ward No 10 Melur Municipality

Amount

Earthwork excavation in hard stiff Earthwork excavation in hard stiff clay, black cotton, hard red earth, shales, murrams, ordinary gravel stoney earth mixed with small sized boulders etc., with an initial lead of 10m and lift of 2m. and as directed by TWAD BOARD Officers. - for foundation First depth of 0 to 2m In hard stiff clay, stiff black cotton, hard red earth, shales, murams, gravely stoney earth and earth mixed with small sized boulders and hard gravelly soil

Earthwork excavation in Soft disintegrated rock, laterite, soft rock or kankar, not requiring blasting etc., with an initial lead of 10m and lift of 2m. and as directed by TWAD BOARD Officers. - for foundation

Earthwork excavation in Soft disintegrated rock, laterite, soft rock or kankar, not requiring blasting etc., with an initial lead of 10m and lift of 2m. and as directed by TWAD BOARD Officers. - for foundation

Medium rock and dense medium rock not requiring blasting.for second depth of 2m to3m

Plain Cement Concrete 1:4:8 (one cement four fine aggregates and eight coarse aggregates) using 40mm size ISS HBG metal including cost and conveyance of all materials to site and including for the mixing,and labour charges etc., complete as per standard specification

Supplying and erecting steel centering including necessary supports for plane surfaces for Reinforced Cement Concrete works such as column footings, column pedestals, plinth beams, grade beams, staircase steps, etc. which require only nominal strutting using mild steel sheets of size 90cm x 60cm and 10 BG stiffened with welded mild steel angles of size 25mm x 25mm x 3 mm for boarding, laid over silver oak joists of size 10cm x 6.5cm spaced at about 75cm centre to centre or at suitable intervals etc. complete in all floors complying with standard specifcation - Plinth Beam

Square Column:

Central circular column:

Plain Surface

Providing and laying in position Standardised Concrete Mix M-30 Grade in accordance with IS 456 - 2000 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement contenet of 400Kg/ cum and maximum water cement ratio of 0.45 including admixture (Plasticiser / super plasticiser) in recommended proportions as per IS 9103 to accelerate, related setting of concrete, improve workability without imparing strength and durability with about (5.0cum), 7730Kg of 20mm machine crushed stone jelly and with about (3.3 cum), 5156kg of 10 - 12mm machine crushed stone jelly and with about (4.79cum) 7670 kg of sand, but excluding cost of reinforcement grill and fabricating charges centering and shuttering but including laying, vibrating with mechanical vibrators, finishing, curing, etc and providing fixtures like fan clamps in the RCC floor / roof slabs wherever necessary without claiming extra cost etc., complete complying with standard specification and as directed by the departmental officers - The Coarse and Fine aggregates to be used should comply with the requiremnents of IS standards.

Providing and laying in position Standardised Concrete Mix M-30 Grade in accordance with IS 456 - 2000 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement contenet of 400Kg/ cum and maximum water cement ratio of 0.45 including admixture (Plasticiser / super plasticiser) in recommended proportions as per IS 9103 to accelerate, related setting of concrete, improve workability without imparing strength and durability with about (5.0cum), 7730Kg of 20mm machine crushed stone jelly and with about (3.3 cum), 5156kg of 10 - 12mm machine crushed stone jelly and with about (4.79cum) 7670 kg of sand, but excluding cost of reinforcement grill and fabricating charges centering and shuttering but including laying, vibrating with mechanical vibrators, finishing, curing, etc and providing fixtures like fan clamps in the RCC floor / roof slabs wherever necessary without claiming extra cost etc., complete complying with standard specification and as directed by the departmental officers - The Coarse and Fine aggregates to be used should comply with the requiremnents of IS standards.

Supplying and fabricating and placing in position steel reinforcement using Mild Steel or ribbed for steel rods for all RCC works as per the design given including cost of Steel and binding wire etc, complete in all floors complying with standard specification using MS plain rods or RTS rods.

Colour washing two coats in all floors using best Cement Paint and best quality of approved variety and burshes, scaffolding charges etc. complete complying with standard specification.

Supplying and fixing in position C.I.Manhole covers (light or heavy duty) of 600mm X 600mm sizes of best approved quality and as per standard specifications etc.,complete.

Providing and fixing of RCC inner access ladder in RCC 1:1.5:3 (One cement, one and half sand, three aggregates) using 20mm HBG stones for OHT including 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 salb of 25mm X 25mm etc,complete and as directed by Municipal Officers.

Construction of RCC spiral staircase in RCC 1:1.5:3 (1 Cement : 1.5 Sand : 3 Coarse Aggregate) using 20 mm HBGS of 1.80 m diameter of required height for approach to the roof of Service Reservoir with RCC Handrails including earthwork excavation, providing CC 1:4:8 mix, RCC footing 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 specifications and as directed by Engineer. The staircase shall be braced to the column of service reservoir 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.

Providing Cut stone set in CM 1:3 (one cement and three sand) using well dressed cut stone supporting inlet pipe of size 0.30 x 0.30 x 0.15m for service reservoir etc., complete as per standard specifications and as directed by Engineer-in-charge

Supply, delivery and fixing in position of 300 mm dia, RCC ventilators on the roof slab and as directed by the TWAD Board officers

Painting TWAD Board Emblem in accordance with the size and specifications as approved by the Board on the service reservoirs including cost of all consumables etc., complete and as directed by TWAD Board Officers.

Refilling the basement with excavated Soil (other than sand) in layers of not more than 15cm thick, watering, well ramming, consolidating, complying with standard specification and as directed by TWAD Board Officers.

Supplying and fixing in position of RCC M30 inside access ladder of required height using 20mm size HBG jelly with 2 nos. Of vertical posts of size 0.10mx0.10m and steps of size 0.45mx0.15mx 0.05 m at 30 cm c/c including cost of all materials, centering shuttering, strutting fabrication and placing in position of reinforcement, finishing, curing etc., complete and as directed by TWAD Board Officers.

The RCC Ladder should be made up of 2 ribs of size 0,12 m x0,10 m inner width, the concrete should be of M.20, 8 mm RTS rods for stirrups at 30 Cm c/c and 8 mm RTS rods for steps with 4 nos of RTS rods as distribution.

Syedsirajudeen (BID ID -1161546)