Public Works Department Tender

Construction of circular manholes in brick masonry with country bricks of class designation 35 in circular manholes, providing and laying 200 mm thick of cement concrete 1:4:8 (one cement, four coarse sand and eight hard broken granite stone aggregate of 40 mm nominal size), side walls with country bricks in cement mortar 1:4 (one cement and four sand) as shown in drawings. Cement plastering with inside and outside walls in CM 1:3 (one cement and three fine sand) with 20 mm thick using Sulphur Resistants Portland Cement (SRPC), providing, benching and channeling with CC 1:11/2:3 (one cement, one and half sand and three hard broken granite stone aggregate of 20 mm nominal size), finishing bottom 20mm thick cement plaster in C.M 1:3 (one cement and three fine sand) with neat cement using SRPC cement, providing and fixing of 560 mm dia heavy duty SFRC covers with frame made as per IS 12592-2002 (I & ii) in accordance with "CPHEEO Manual on Sewerage & Sewage treatmet and relevant IS Codes". Fixing of C.I/PVC steps as shown in drawings, but excluding its cost which will be paid separately. The cost also includes the cost of curing and testing of the manholes for its water tightness. A drop in water more than 5 cm in 24 hours shall not be permitted. The rate including cost of circular SFRC cover and frame 560 mm dia, but excluding the cost of earth work excavation - 1200 mm dia and 1000 mm deep.

Extra/rebate for every additional/reduction in depth of 0.10 m in 23 cm thick wall or part thereof over the following manhole size for circular manhole - Country Bricks - 1200 mm dia and 1000 mm deep.

Providing, laying and jointing HDPE pipe PE 100 x PN 6 conforming to IS specification and ISI marked including transportation to the site, lowering to the trenches, laying to proper grade and alignment, testing of joints with required testing equipment, including jointing and excluding specials such as bends, tees, threaded pieces, couplers, reducer, endcaps etc., complete as per IS and CPWD specifcation - 180 mm dia.

Providing, laying and jointing PVC-U pipes for use in under ground drainage and sewerage system conforming (SN8) to IS specification 15328-2003 and ISI marked including transportation to the site, lowering to the trenches, laying to proper grade and alignment, testing of joints with required testing equipment, including cost of solvent cement, excluding UPVC specials such as bends, tees, threaded pieces, couplers, reducer, end caps etc, complete all as per IS and CPWD specification - 110 mm dia.

Providing and fixing in position UPVC moulded endcap (Finolex/Jain)(0.6 Mpa) conforming to IS 7834 part II and ISI marked,including labour charges for jointing, jointing materials etc,complete - 110mm dia

Making connection of drain or sewer line with existing manhole including breaking into and making good the walls, floors with cement concrete 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 40 mm nominal size) cement plastered on both sides with cement mortar 1:3 (1 cement : 3 coarse sand) finished with a floating coat of neat cement and making necessary channels for the drain etc. complete. - for pipes 100 to 230 mm diameter.

Excavation for road work in soil with hydraulic excavator of 0.9 cum bucket capacity including cuttinga nd loading in tippers, trimming bottom and side slopes, in accordance with requirements of lines, grades and cross sections and transporting to the embankment location with all lits and lead upto 1000m.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering.- All work upto plinth level -1:5:10 (1 cement:5coarse sand : 10 graded stone aggregate 40mm nominal size)

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering.- All work upto plinth level -1:2:4 (1 cement:2coarse sand : 4 graded stone aggregate 20mm nominal size)

Fixing of 150 mm wide PVC encapsulated steps in the manholes with 200 x 200 x 100 mm CC block in cement concrete 1:1.5:3 (one cement, one and half sand and three hard broken granite stone aggregate of 20 mm nominal size) all as shown in drawings.