Strengthening of Sewer Line Extention Work at DRSTUAoA Nainital Priority 01

Taking out existing CC interlocking paver blocks from footpath/ central verge, including removal of rubbish etc., disposal of unserviceable material to the dumping ground, for which payment shall be made separately and stacking of serviceable material within 50 metre lead as per direction of Engineer-in-Charge.

Dismantling of Cement Concrete Pavements as per Technical Specification Clause 202. Dismantling of cement concrete pavements by mechanical means using pneumatic tools breaking to pieces not exceeding 0.02 Cum in volume and stock piling at designated locations and disposal of dismantled materials upto a lead of 1000 m, stacking serviceable and unserviceable materials separately

Kota stone slabs 20 mm thick in risers of steps, skirting, dado and pillars laid on 12 mm (average) thick cement mortar 1:3 (1 cement: 3 coarse sand) and jointed with grey cement slurry mixed with pigment to match the shade of the slabs, including rubbing and polishing complete

Providing of all ,material, labour, T&P etc required for the diverting and blocking of existing sewer line for execution of work.

Excavtion of earthwork below GL by manually or by mechanical means for laying of sewers, manholes, gully pits, chambers etc in soil including extra excavation below inverts, trimming and dressing of sides, levelling and back filling of trenches by excavated earth in 20cm layers, watering and ramming the same including removal of surplus earth or other disamantled material up to a distance of 50m from the center of trenches and cleaning of site properly after completion of work. Excavation by mechanical means shall be restricted up to 90cm above invert levels at every point of excavation. Excavation from invert level to 90cm above shall be done by manually only. Ordinary soil 0 to 1.5m below GL

0.00 to 1.50m B.G.L (200 mm DI)

(150 mm DI)

1.50 TO 3.00m B.G.L (200 mm DI)

(150 mm DI)

Supply & laying jointing of following dia DI K-7 S&S pipes with rubber gasket to the site work, lowering the same into trenches below GL true to alignment, making the joint with APPROVED EPDM rubber gaskets with necessary spun yarn soaked in bitumen jointing with 1:2 cement mortar in coarse sand including cost of all jointing materials and testing etc. complete but excluding excavation and backfilling of trenches upto DI Pipe S&S K-7 class confirming to IS:458-2003 Class NP2 200mm dia upto 0 to 1.5m depth