Bengaluru Water Supply And Sewerage Board Tender

code04 - Providing lowering laying jointing testing and commissioning of following diameters glazed stone ware pipes conforming to IS 651 1992 with 5th revision in all respects jointing with EPDM rubber rings seals according to EN 681 and ASPM 425 The rubber seals joints pipe will have groves in interior of socket and exterior of the spigot. The rubber gasket shall be prefixed at the factory by the manufacturer rigidly with approved glue to have leak proof joint including conveying of pipe to work site and rolling and lowering into trenches laying true to line level and perfect linking at joints testing and commissoning including loading and unloading at both destinations and cuts of pipes wherever necessary including jointing of GSW pipes and specials with rubber gaskets conforming to EN 681 and ASTM C-425 including cleaning the socket and spigot with soap solution and applying talcum powder for detecting crack then applying glue and before inserting of rubber gaskets jacking and fixing in perfect condition including the cost of soap solution talcum powder and glue etc. and giving necessary hydraulic test to the required pressure of water head with all lead and lifts including costing of jointing materials and all necessary survey works for laying of sewers etc. and disposal of debris as directed etc. complete. Contractor will make his own arrangements for procuring water for testing with Rubber ring gasket joints

code05 - Refilling available earth around trenchespipelines cables in layers not exceeding 20 cms in depth compacting each deposited layer by ramming after watering with a lead upto 50 m and lift upto 1.5 m. Including cost of all labour complete as per specifications.

code06 - Providing laying spreading and compacting graded stoneaggregate to wet mix macadam specification including premixingthe Material with water at OMC in mechanical mix plant carriageof mixed Material by tipper to site laying in uniform layers with pavergrader in sub-base base course on well prepared surface and compacting with vibratory roller to achieve the desired density.

code07 - Dismantling the damaged or collapsed Machine hole conical in shape and reconstructing the same for the same dimensions with machine made wire cut brick in CM 1 4 with ordinary Portland cement etc. as per design and specifications. The existing ring cover and CC beeding to be used..For manholes of 1.2M dia. 1.0 Mtrs Depth on the line EMH 2

code08 - Providing and constructing "WIRE CUT BRICK MANHOLE CHAMBERS" using suplhate resistant cement conical in shape at Top with CC 1 3 6 foundation using 40mm and down size graded metal of approved quality and with an offset of 0.15M alround the chamber. Construct Brick masonry in CM 1 4 340 mm thickwith wirecut bricks of approved quality plaster inside and out side with CM 1 3 12mm thick except for the conical surface outside where the plaster thickness shall be 20mm. Slope inside To be 1 6 in the concrete Towards central drain and finished smooth. Fixing of pipes in CC 1 2 4 with graded metal of 20mm and down size. Supplying and fixing SFRC manhole frame and cover conforming To IS 12592 with latest amendment in CC 1 2 4. Supplying and fixing footsteps made of 12mm dia. steel bars Fe-415 with 3mm thick plastic encapsulation IS-10910. The footsteps shall be fixed 30cms apart and on CC block embeded To masonry wall. The whole works include excavation in all types of soils watering curing barricading danger lightingpouring tar over MH frame and cover cost of tar shoring strutting de-watering engraving manhole number with flow direction on the inner conical surface etc. as per the drawing etc. as per technical specifications and for the following diameters and depth etc. For 1.20 mtr dia 1.0mtr depth

code09 - Additional depth of machine holes Above 1.0 mtr upto 2.0 mtr depth MH in terms of 0.1mtr

code10 - 1.20mtr dia 2.0mtr depth

code11 - Above 2.0 mtr upTo 3.0 mtr depth MH in terms of 0.1mtr

code12 - For 1.20 mtr dia below 1 mtr depth

code13 - 0.8 mtrs depth NMH 31

code14 - 0.5 mtrs depth NMH 18

code15 - Dewatering the sewage storm water by using reqired HP submersible pump for the diversion of storm sewage during the execution of work Considering for one Pump for 10 HP pump