Public Works Department Tender

[21.38.7]`Lowering salt glazed stoneware pipes and specials into trenches for all depths and laying out the same to correct alignment gradient, level etc in trenches including all dressing and trimming of bed and sides of trenches, if required, trimming and cutting of concrete beds and joint holes, supporting the pipes and specials, in correct position in a suitable rigid manner while the same are being jointed and until the surrounding benching hunching and envelopes are completed. The sewer shall rest on the bed at every point throughout its length and to ensure this, it shall be grouted in without extra charge by the contractor with lime surkhi mortar, in the case of lime concrete beds and 1:3 cement sand mortar in the case of cement concrete beds including cartage from Divisional Store or nearest Railway station to site of work. The internal diameter of sewer being :-` 7. 300 mm internal diameter of sewer

[21.39.7]Jointing and fixing salt glazed stoneware pipes and special in trenches using cement sand mortar 1:1 and best white Italian tarred hemp/yarn including finishing and trowel ling of each joint at an angle of 45 degrees with the longitudinal axis of the pipes, watering, keeping the joints covered and wetted till the same are cured, testing the sewer lines for leakages and making all leakages and defect good, complete as laid down in the contract specifications. 7. 300 mm internal diametre of sewer

[21.89.1.1]Construction of rectangular standard brick masonry manhole chambers to standard drawings on new. egg-shaped sewers up to the required depth in 1:5 cement sand mortar, lime concrete 40 percent lime mortar with 19-20 mm gauge brick ballast in haunches above the arch ring where the depth of cover in traffic streets is less than 1.5 metres, 12mm thick water tight 1:2 cement sand plaster with a floating coat of neat cement and finished with two coats of sodium silicate on interior surface where required, reinforced cement concrete slab 180mm thick fixing 560 mm internal diameter C.I. manhole frame and cover weight not less than 2.5 quintal painted with 3 coats of black bitumen paint, fixing galvanised malleable iron steps embedded in 1:2 cement sand mortar etc., complete. the rate also covers the cost of M.S. steel for R.C.C. slab labour for fixing and carriage of C.I. manhole frame and cover and malleable iron steps from the stores of the engineer-in-charge of the works to site of works. The rate further includes cost of accurately planned and fitted centring, supports for all works, as well as for all curves and specials work cleaning out their beds, etc. sodium silicate shall be supplied free of cost at the stores of Engineer-in-charge. 1.1. On egg-shaped sewers of size 610mm X 915 mm to 860 mm X 1290 mm - for 2.40 meters depth below ground level