Corporation Of Chennai Tender

Providing and laying in position ,Standardised Concrete Mix M-20 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 content of 325 kg/m3 and m,aximum water cement ration of 0.55, including admixture (Plasticiser/Superplasticier) in recommended proportions as per IS:9103 to accelerate ,retard setting of concrete,improve workability without impairing strength and durability with about (5.0 cum) 7730 kg of 20 mm machine crushed stone jelly and with about (3.3 cum) 5156 kg of 10-12mm machine crushed stone jelly and with about (4.79 cum) 7670 kg of sand, nut excluding cost of reinforcement grill and fabricating charges,centering and shuttering and also including laying,vibrating with mechanical vibrators,finishing,curing,etc and providing complying with standard specification and as directed by the departmental officers. The coarse and fine aggregates to be used should comply with the requirements of IS Standrands.(No separate payment will be made by the Department for the excess usage of materials)

Roofing with galvanised corrugated iron sheets (thickness of sheet 0.8mm) including 'J'bolts and nuts with bitumen washers,etc.,complete (ISI STD).

Painting old iron work two coats with ready mixed paint of superior quality and approved colour.(ISI STD)

Colour washing one coat over new plastered surface.

Construction of Inspection chamber of size 60x60x60cm with necessary earth work excavation, 40mm size brick jelly concretein C.M. 1:4:10 ( 1 cement, 4 Crushed Stone Sand (Commercially called M-Sand) and 10 broken brickjelly) stock brick work in C.M., 1:6 (1 cement and 6 Crushed Stone Sand (Commercially called M-Sand))for 23cm thick wall, benching, channelling and plastering,interior, exterior and top with C.M. 1:3 ( 1 cement and 3 Crushed Stone Sand (Commercially called M-Sand) Sandsand), 12mm thick and providing 7.5cm thick R.C.C. loose slabcovering in C.C. 1:1.5:3 ( 1 cement, 1.5 Crushed Stone Sand (Commercially called M-Sand) and 3 bluegranite broken stone jelly of 12mm to 20mm size) with necessaryreinforecement and arrangements to lift for cleaning purpose,etc., complete.

Construction of Inspection chamber of size 60x60x75cm with earthwork excavation for foundation with 23cm thick brick jelly cementconcrete bed in C.M.1:4:10 using 40mm brick jelly for foundation,brick work in C.M.1:6 for chambers, plastering with C.M.1:3,12mmthick,benching,channelling,75mm thick RCC loose slab covering inC.M.1:1.5:3 mix using 20mm blue granite jelly including necessaryreinforecement,etc.,complete.