Public Works Department Tender

Construction of intercepting chamber of the size 600 x 850 x 1100 mm deep with RCC top slab of 100 mm thick in R.C.C 1:1.5:3 (one cement, one and half sand and three HBG stone aggregate of 20 mm nominal size) as shown in drawings, foundation in PCC 1:4:8 mix (One cement, four sand and eight hard broken granite stone aggregate of 400 mm nominal size), side wall of 23 cm thick in brick, inside and outside plastering with 20 mm thick in CM 1:3 (one cement and three sand) and making channel for house service connectionin cement concrete 1:1.5:3 (one cement one and half sand and three HBG stone aggregate of 20 mm nominal size) rendered with CM 1:3 (one cement and three sand) 20 mm thick complete. Conveying and fixing of rectangular RCC intercepting chamber cover with frame of heavy duty of size 450 x 600 mm in cement concrete 1:1.5:3 (one cement one and half sand and three HBG stone aggregate of 20 mm nominal size). The cost includes curing and testing of the intercepting chamber for its water tightness. A drop in water more than 50 mm in 24 hours shall not be permitted. The rate includes cost of rectangular RCC intercepting chamber cover with frame of heavy duty of size 600 x 450 mm and centering, shuttering and reinforcement with TMT (Tiscon/Vizag/IISCO/SAIL) bars, but excluding the cost of earth work excavation.

Extra/rebate for every additional/reduction in depth of 0.10m or part thereof in 23cm thick wall for the intercepting chamber of size 600x850x1100mm deep.

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 1:1 1/2:3 (one cement, one and half sand and three hard broken granite stone aggregate of 20 mm nominal size), finishing bottom 20 mm 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 & sewerage treatment 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 manhole size for circular manhole - 1200 mm dia and 1000 mm deep.

Earth work excavation above water level and depositing on bank in sandy, silt or other soil, wet sand or silt, light black cotton soil or clay, sandy loam and ordinary soil for infiltration, gallery siphon or connecting pipe line including driving shoring materials as mentioned below. Removing the shoring materials and refilling with excavated earth complying with standard specification etc., complete. - First depth of 2m (using close timbering).

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 - 200 mm dia.

Providing, laying and jointing PVC - U pipes for use in under ground drainage and sewerage system conforming (SN8) to IS specificaiton 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 specificaiton - 110 mm dia.

Providing and fixing in position PVC - U moulded plain coupler (Finolex/Jain) (SN8) conforming to IS 7834 part II and ISI marked, including labour charges for jointing, jointing materials etc complete - 110 mm dai - PVC coupler (mould)

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.

Earth work in excavation by mechanical means (Hydraulic excavator)/manual means in foundation trenches or drains (not exceeding 1.5m in width or 10 sqm on plan) including dressing of sides and ramming of bottoms , lift upto 1.5m, including getting out the excavated soil and disposal of surplus excavated soil as directed , within a lead of 50m -All kinds of soil.

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)