Construction of Manhole and Sewer pipeline at Elumalai konar lane North masi street in ward no. 51

Amount

Dismantling RCC by manual / by using deploying machineries

Construction of manholes using sulphate resistant cement at various depths to invert including earthwork excavation as per SS 20B, laying cement concrete in C.M. 1:3:6 using 40mm B.G.jelly for foundation, sinking well kerb below G.L. for 4.5m depth and above, pumping, timbering charges for 2.5m depth and above, stock brick work in C.M. 1:3, for 23cm thick wall and over 23cm thick wall, plastering interior with C.M. 1:3, 20mm thick and exterior with C.M. 1:3, 12mm thick, laying plain cement concrete 1:3:6 using 12.0mm to 20mm B.G.jelly fixing the frame, providing C.I. steps, manhole cover and frame, benching and channelling including refilling the trench with excavated earth and disposal of surplus earth etc. complete for the following sizes for each manhole (As per the type design drawing for manholes). - Up to 1.50m Depth

Earth work excavation for foundation & depositing on bank with an initial lead of 10m & lift of 2 m for depths in soft disintegrated Rock when required, barricading with safety lamps etc all complete as per standard specification as directed by the Departmental Engineer.

Dewatering the trenches during excavation and laying jointing of sewers by engaging diesel pumpset upto 7 hp with fuel, crew, hire charges, transportation and all other items of work complete as per standard specifications and as directed by Engineer in charge.

UN PLASTICIZED NON - PRESSURE POLYVINYL CHLORIDE (PVC-U) PIPES FOR USE IN UNDERGROUND DRAINAGE AND SEWERAGE SYSTEMS as per IS 15328/2003 - 200mm PVC Pipe SN2-SDR 51(S 25)

Lowering PVC rigid pipes and specials to trench and laying to proper grade and alignment, jointing with PVC couplers with cement paste.

Refilling the trenches with suitable excavated earth available along the alignment after the pipes & specials are laid, jointed & tested in layers & watering, ramming & consolidation directed by the Engineer-in-Charge

Barricading work ( Where , there is less traffic areas and broader roads etc.) for laying of pipe line using casurina poles at 1.50 m center to center ( 8 cm to 10 cm dia and 1.80 m height) Vertical with horizontal poles in three rows including painting the vertical poles in the road facing sides with ready mix paint, tying the vertical and horizontal poles with coir rope including fixing charges and fixing 75 mm dia reflectors including earth work excavation for fixing vetical posts and finally removing and stacking the materials safely for further use etc., complete and as directed by TWAD Board Officers.

Replacement of Underground Utilities (PVC Pipe) damaged during earthwork excavation for pipe laying works including cost of additional earthwork excavation in all soil strata, including BT/CC road cutting, removal of slushy soil and replacing the pipeline with sound pipe, including supply and delivery of PVC pipes, couplers, jointing materials and required specials, cutting, conveying , laying, jointing and cost of refilling for the additional earthwork etc complete and as directed by the TWAD board officers.

Plain Cement Concrete 1:1.5:3 (one cement, one and half fine aggregates and three coarse aggregates) using 20mm size ISS HBG metal including cost and conveyance of all materials to site and including for the mixing, laying and labour charges etc., complete as per standard specification

Add GST 18%

M GNANAVEL (BID ID -1328971)