Bengaluru Water Supply And Sewerage Board Tender

code04 - Depth Exceeding 3.00 Mtrs , but not exceeding 4.50 Mtrs

code05 - Earthwork excavation for pipeline trenches by Mechanical means as per drawing & technical specification, 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 stumpsand 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. Hard Rock (Blasting prohibited) Dept Upto 1.50 Mtrs

code06 - Depth Exceeding 1.50 Mtrs but not exceeding 3.00 Mtrs

code07 - Depth Exceeding 3.00 Mtrs but not exceeding 4.50 Mtrs

code08 - 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 Pipes of 400mm dia

code09 - Providing Size stone masonry with hard stone in foundation & Plinth with Cement Mortar 1:6(1 : Cement : 6 Coarse Sand)

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 - Removal of Un-serviceable soil with disposal upto a suitable distance as directed by the Engineer incharge of work

code12 - 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

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 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 of MH's

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 1.2mm. For 1.20 Mtrs dia MH's, 1.00 Mtrs Depth

code15 - Above 1.00 Mtrs Depth MH's interms of 0.10 Mtrs

code16 - 2.00 Mtrs Depth & SFRC Cover & Frame

code17 - Above 2.00 Mtrs Depth MH's interms of 0.10 Mtrs

code18 - 3.00 Mtrs Depth & SFRC cover & Frame

code19 - Above 3.00 Mtrs Depth in terms of 0.10 Mtrs

code20 - 4.00 Mtrs Depth & SFRC cover & Frame

code21 - Above 4.00 Mtrs Depth in terms of 0.10 Mtrs

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

code23 - 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