Bengaluru Water Supply And Sewerage Board Tender

004 - 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.300 mm dia, (BWSSB SR 2023-24 Vol-V P. No.188, I. No-16.3) ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

005 - Refilling available earth around trenches/pipelines,cables in layers not exceeding 20 cm 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 s (BWSSB SR 2023-24 VOL-I P.No.7, I.No. 1.1) ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

006a - 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 OrdinaryPort 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: 1.4 mt depth manhole NMH 1,2 ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

006b - for 1.5 mt depth manhole NMH 3,4,5,6,7 ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

006c - 1.7m depth manhole ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

006d - 1.8m depth manhole ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

006e - 2.0m depth manhole ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

007 - Providing and installing at site of work P.V.C. pipes including cost of pipes and specials and labour, including lowering into trenches, laying true to line, level and perfect linking at joints leak proof including jointing of approved type with all labour charges and all lift charges, handling charges including encasing the pipe around to a depth not less than 15 cms with gravel or selected earth available from the excavation etc. complete.(BWSSB SR 2023-24 VOL-V P.No.120, I.No. 10.14) ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

008 - Supply and delivery at site special moulded variety PVC bend as per IS 7834/ 1987 and fabricated as per IG124/ 1984 with ISI mark with its latest amendments(BWSSB SR 2023-24 VOL-V P.No.118, I.No. 10.11) 110 mm dia PVC BEND ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

009 - Supply and delivery at site special moulded variety PVC reducer as per IS 7834/ 1987 and fabricated as per IG124/ 1984 with ISI mark with its latest amendments(BWSSB SR 2023-24 VOL-V P.No.119, I.No. 10.13) 110 mm dia PVC REDUCER ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

010 - Removal of Unserviceable Soil with Disposal upto a suitable distance as directed by the Engineer incharge of work: (BWSSB SR: 2023-24 Page No:17, I no:3.1) ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

011 - 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. (Commom SR Vol 5 2023-24, P No: 206 I No 16.55) 5 hp pump ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

012 - Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specification including premixing the Material with water at OMC in mechanical mix plant carriage of mixed Material by tipper to site, laying in uniform layers with paver/grader in sub-base / base course on well prepared surface and compacting with vibratory roller to achieve the desired density.(BWSSB SR 2023-24 VOL-3 P.NO.26,I.NO.4.17)pacting with vibratory roller to achieve the desired density. PWD SR Vol-3 Page no.24. ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.

013 - Providing and laying in position Cement Concrete for levelling course for all works in foundation. The granite/trap/basalt crushed graded coarse aggregates and fine aggregates as per relevant IS Codes machine mixed, laid in layers not exceeding 150 mm thickness, well compacted using plate vibrators, including all lead & lifts, cost of all materials of quality, labour, Usage charges of machinery, curing, and all the other appurtenances required to complete the work as per technical specifications.Mix 1:3:6 Using 40 mm nominal size graded crushed coarse aggregates(BWSSB SR 2023-24 VOL-1 P.NO.26,I.NO.2.1.3) ---- Amount put to tender is excluding GST. Rates quoted shall be excluding GST.