Replacement of damaged and chocked drainage line with new drainage line at A and B Bungalow at CSIR-IICT Hyderabad

Excavation work Ordinary rock by mechanical means (Hydraulic excavator)/ manual means in foundation trenches or drains including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soils within the IICT campus as directed by the Engineer in charge.

Providing, laying and jointing glazed stoneware :300 mm diameter pipes class SP-1 with stiff mixture of cement mortar in the proportion of 1:1 (1 cement : 1 fine sand) including testing of joints etc. Complete as directed by the Engineer in charge.

Providing and laying 300 mm diameter S.W. pipe cement concrete 1:5:10 (1 cement : 5 coarse sand : 10 graded stone aggregate 40 mm nominal size) up to haunches of S.W. pipes including bed concrete as per standard design as directed by the Engineer in charge.

Constructing brick masonry manhole in cement mortar 1:4 ( 1 cement : 4 coarse sand ) with R.C.C. top slab with 1:1.5:3 mix (1 cement : 1.5 coarse sand (zone-III) : 3 graded stone aggregate 20 mm nominal size), foundation concrete 1:4:8 mix (1 cement : 4 coarse sand (zone-III) : 8 graded stone aggregate 40 mm nominal size), inside plastering 12 mm thick with cement mortar 1:3 (1 cement : 3 coarse sand) finished with floating coat of neat cement and making channels in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) finished with a floating coat of neat cement complete as per standard design :Inside size 120x90 cm and 90 cm deep including C.I. cover with frame (medium duty) 500 mm internal diameter, total weight of cover and frame to be not less than 116 kg (weight of cover 58 kg and weight of frame 58 kg) : With common burnt clay F.P.S. (non modular) bricks of class designation 7.5

Making connection of drain or sewer line For pipes 250 to 300 mm diameter 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 20 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 as directed by the Engineer in charge.

Demolishing cement concrete manually/ by mechanical means including disposal of debries as per the direction of Engineer - in -charge. Nominal concrete 1:4:8 or leaner mix (i/c equivalent design mix)

Extra for depth for manholes Size 120x90 cm With common burnt clay F.P.S. (non modular) bricks of class designation 7.5