Bengaluru Water Supply And Sewerage Board Tender

code04 - 3.0 to 4.50 Mtrs Depth

code05 - 4.50 to 6.00 Mtrs Depth

code06 - Earthwork excavation for pipeline trenches by Mechanical Means as per drawing & technical specifications, including setting out, construction of shoring, strutting, cost of blasting materials, barricading, caution lights, bracing, using sight rails & bonding rods at every 100mm wherever necessary as directed, removal of stumps & other deleterious matter, dressing of sides & levelling the bottom of trench to the extent required, utilizing the available excavated earth locally for the work & all other appurtenances to complete in the following strata. Hard Rock (blasting prohibited) Depth 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 S&S RCC SPUN / VIBRATED CAST PIPES (REINFORCED) pipes NP-3 Class conforming to IS:458-1988 with latest amentments using ordinary portland cement, for sanitary works and conveying to work site, rolling and lowering into trenches, laying true to line and level including loading and unloading at both destinations and jointing of pipes and specials, perfect linking of joints with jack to correct position including cost of jointing materials, i.e, rubber rings conforming to IS: 5382 for S&S RCC pipes, with all leads and lifts as directed and giving necessary hydraulic test as per ISS to the required pressure and commissioning etc. complete. (Contractor will make his own arrangements for procuring water for testing). Before the execution of the work, the contractor shall carry out the Survey. RCC NP3 class pipe of 300mm dia

code10 - 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 joint. 230mm dia SW Line

code11 - Wet Mix Macadam (Plant Mix Method):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

code12 - 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 .

code13 - Dismantling the damaged or collapsed Machinehole ,conical in shape, and reconstructing the same for the same dimensions, with machine made wire cut brick in CCM 1:4 with ordinary portland cement etc. as per design and specifications. The existing ring, cover and CC beeding to be used. For 1.2M dia. For Machinehole of 1.2M dia and 1.00 M depth

code14 - 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 1.50 Mtrs Internal dia. Constructing Brick Masonry Circular MH's 1.50 Mtrs Internal dia & 0.50 Mtrs Depth including SFRC F & C

code15 - 0.70 Mtrs Depth including SFRC F & C

code16 - 1.00 Mtrs Depth including SFRC F & C

code17 - Above 1.00 Mtrs depth MH's in terms of 0.10 Mtrs

code18 - 2.00 Mtrs depth & SFRC Cover & Frame

code19 - Above 2.00 Mtrs depth MH's in terms of 0.10 Mtrs

code20 - 3.00 Mtrs depth & SFRC Cover & Frame

code21 - Above 3.00 Mtrs depth MH's in terms of 0.10 Mtrs

code22 - 4.00 Mtrs depth & SFRC Cover & Frame

code23 - Above 4.00 Mtrs depth MH's in terms of 0.10 Mtrs

code24 - 1.50 Mtrs Depth & SFRC Cover & Frame . 5.00 Mtrs Depth

code25 - Above 5.00 Mtrs Depth MH's in terms of 0.10 Mtrs

code26 - Providing, Filling & Laying of Sand Bags filled with Sand / Clay for diversion of Sewage during execution of work

code27 - 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. 10 HP pump