tender for repair and replacement of damaged sewer lines and sewer chambers in the cbri colony.; 1 earth work in excavation by mechanical means (hydraulic excavator)/ manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and lift upto 1.5 m, as directed by engineer-incharge. all kinds of soil 2 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 mmhick 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 3 extra for depth for manholes :size 120x90 cm : with common burnt clay f.p.s. (non modular) bricks of class designation 7.5 4 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 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 :for pipes 100 to 250 mm diameter 5 supplying and laying of 150mm dia pvc pipe isi mark having 6kg/sq. cm pressure (monica gold/hbi or equivalent make) including necessary fittings (el-bow/socket etc.) and adhesive etc.complete. 6 providing tractortrolly forcarriageofold testing models, watsematerials,brick bats,testing materials,debredge,broken bats, brokenconcreteblocksand old concrete piecesetc.from intitute to outsideofnagar nigum roorkee includng loading unloding all completeworks at site asper direction of engineer-in-charge.