Bengaluru Water Supply And Sewerage Board Tender

code04 - 3.00 to 4.50 Mtrs Depth

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. 400mm dia RCC

code09 - 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 .

code10 - Construction of RCC Machinehole chambers of 1:1.5:3 proportion or approved type Cast-insitu / Pre-cast RCC Machinehole chambers, constructed using form vibrators of standard type, with barricading, danger lighting and using of sight rails and boning rods wherever necessary, shoring and strutting wherever required using Ordinary Port Land Cement, using 1:1.5:3 proportion RCC with 20 mm and down graded jelly, well graded sand and steel of approved quality, 200 mm thick top concrete slab, having wall thickness and raft thickness as in approved drawings and with an offset in raft alround the chamber as in approved drawing, benching concrete with 1:6 slope towards the central drain finished smooth, including fixing and grouting of pipes, including conveying to work spot supply and fixing SFRC Machinehole cover and frame (Heavy duty) conforming to IS:12592 with latest amendments, on a bed of CC 1:2:4 Providing and fixing of minimum 3 mm thick encapsulated plastic footsteps (as per IS 10910) on 12 mm dia. Grade Fe-500 steel bar (as per IS 1786) staggered at 300 mm apart as detailed in Technical specifications, including stone grit beding wherever required, watering, curing, engraving Machinehole number with flow direction on the inner cylindrical surface etc., complete including cost of reinforcement steel and fabrication charges and also cost and conveyance of all materials, labour with all lead and lifts. The Pre-cast RCC Machinehole are for various diamters and depths as stated below and as per detailed drawings, specifications and direction of the Engineer. For 1.2m dia Machinehole. 1.00 Mtrs Depth

code11 - Above 1.00 Mtrs Depth MH in terms of 0.10 Mtrs

code12 - 1.20 Mtrs dia MH, 2.00 Mtrs Depth

code13 - Above 2.00 Mrs Depth MH in terms of 0.10 Mtrs

code14 - 1.50 Mtrs dia MH, 3.00 Mtrs Depth

code15 - Above 3.00 Mtrs Depth in terms of 0.10 Mtrs

code16 - 1.50 Mtrs dia MH, 4.00 Mtrs Depth

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 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

code20 - 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

code21 - Providing & Applying Primer Coat with SS1 Grade Bitumen Emulsionon prepared surface of granular base including cleaning of road surface & spraying primer at the rate of 0.70 Kg/Sq Mtr using Mechanical means.

code22 - Tack Coat : Providing & aplying tack coat with RS1 Bituminous emulsion using emulsion pressure distributer at the rate of 0.25 Kg / Sq.Mtrs on Granular surface as per MORTH Specifications

code23 - Providing & Laying Bituminous Macadam with 120 TPH capacity hot mix plant batch type using crushed aggregates of specified grading premixed with bituminous binder VG-40 @ 3.3% by weight of Mix, transported to site , laid over a previously prepared surface with mechanical paver finisher to the required grade, level & alignment & rolled as per clauses 501.60 and 501.70 to achieve the desired compaction.

code24 - Providing & laying Bituminous Concrete with 120 TPH Capacity hot mix plant batch type using crushed aggregates of specified grading , premixed with bituminous binder VG-30 @ 5.2 Percent of mix & filler, transporting the hot mix to work site, laying with mechanical paver finisher to the required grade level & alignmnet, rolling with smooth wheeled , vibratory & tandem rollers to achieve the desired compaction as per MORTH specifications clause No.507 complete in all respects

code25 - 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

code26 - Providing, filling & laying of Sand bags filled with Sand / Clay for diversion of Sewage during execution of work

code27 - Removal of Unserviceable soil with disposal upto a suitable distance as directed by the Engineer in charge of work