Bengaluru Water Supply And Sewerage Board Tender

code04 - 1.50 to 3.00 Mtrs Depth

code05 - 3.00 to 4.50 Mtrs Depth

code06 - Earthwork excavation for pipeline trenches by Mechanical means as per drawing & technical specification, including setting out, construction of shoring, strutting, barricading, caution lights, bracing, using sight rails & bonding rods at every 100mm & wherever necessary as directed, removal of stumps and other deleterious matter, dressing of sides and levelling the bottom of trench to the extent required, utilising the available excavated earth locally for the work and all other appurtenances to complete in the following strata. Ordinary / Soft Rock (without requiring Blasting) Dept Upto 1.50 Mtrs

code07 - Depth Exceeding 1.50 Mtrs but not exceeding 3.00 Mtrs

code08 - Depth Exceeding 3.00 Mtrs but not exceeding 4.50 Mtrs

code09 - 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 & 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. 230mm dia

code10 - Refilling available earth around trenches/pipelines, cables in layers not exceeding 20 cms in depth, compacting each deposited layer by ramming after watering with a lead upto 50m, and lift upto 1.50m, Including cost of all labour complete as per specifications .

code11 - Providing and constructing "WIRE CUT BRICK MACHINEHOLE CHAMBERS" using Portland/Pozzolana 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 thick, with 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. Providing and fixing SFRC Machinehole frame and cover (Heavy Duty) conforming to IS:12592 with latest amendment, in CC 1:2:4. Providing and fixing footsteps made of 12mm dia. steel bars (Fe-500) 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 watering, curing, barricading, danger lighting, pouring tar over MH frame and cover, cost of tar, shoring, strutting, de-watering, engraving Machinehole 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 1.2mm. For 1.20 Mtrs dia MH's, 1.00 Mtrs Depth

code12 - Above 1.00 Mtrs Depth MH's interms of 0.10 Mtrs

code13 - 2.00 Mtrs Depth

code14 - Above 2.00 Mtrs Depth MH's interms of 0.10 Mtrs

code15 - 1.50 Mtrs dia MH's : 3.00 Mtrs Depth

code16 - Above 3.00 Mtrs Depth MH's interms of 0.10 Mtrs

code17 - Dismantling the damaged or collapsed Machinehole ,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 1.20 Mtrs dia, 1.00 Mtrs Depth

code18 - Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, c.c. wood work, steel work, including T & P and scaffolding wherever necessary sorting the dismantled material, disposal of unserviceable and stacking the serviceable material with all lifts and lead, Prestressed / RCC grade M-20 & above

code19 - Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specifications including premixing the Materials with water at OMC in Mechanical Mix Plant carriage of Mixed Materials by tipper to site, laying in Uniform layeras with Paver in Sub base / Base course on well prepared surface & compacting with Vibratory roller to achieve the desired density complete as per Specifications MORTH Specifications

code20 - Providing bedding o backfilling using approved stone dust/quarry dust of size not exceeding 5.6mm for the pipeline trenches including watering and consolidation etc., complete with all lead & lifts as per specification and as directed by the Engineer in charge , after obtaining the approval of Chief Engineer

code21 - Dewatering the sewage/storm water by using required HP submersible pump for the diversion of storm / sewage during the execution of work. Considering for One Pump. 10 HP pump

code22 - Providing, filling & laying of Sand bags filled with Sand / Clay for diversion of Sewage during execution of work

code23 - Removal of Unserviceable soil with disposal upto a suitable distance as directed by the Engineer in charge of work