Bengaluru Water Supply And Sewerage Board Tender

code04 - Supplying, fitting and placing TMT FE 550/550D Steel Reinforcement including cost of all materials, machinery, labour, cleaning, straightening, cutting, bending, hooking, laping/welding joints, tying with binding wire/soft annealed steel wire and other ancilary operations complete as per drawing and technical specification-All other type of structures.

code05 - Additionalities for Formwork, Centering & Scaffolding-Foundation, Sub structure of Cross drainages-5% Percent on finished rate of concrete per m3

code06 - 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 900 mm dia.

code07 - 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 20mm and down graded jelly, well graded sand and steel of approved quality, 200mm 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 3mm 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. Constructing Pre-cast RCC Machinehole 1.8 m internal dia., 2.0m depth & SFRC cover & frame.

code08 - Hydraulic Excavator of 1.2 m3 bucket

code09 - Desilting of sewerlines by mechanical (Jetting,Sucking,Grabber,Scrap per etc.,) means, setting up the over pumping arrangements, rodding and dislodging of accumulative silt from the pipeline, removal of silt by mechanical means to the ground including barricading, cleaning of sewers and machinhole, disposal of removed silt upto a distance of 20Kms, necessary all complete as per the instructions of the Engineer-in charge.

code10 - Providing, filling and laying of sand bags filled with sand/clay for diversion of sewage during execution of work.

code11 - Dewatering the sewage/storm water by using required HP submersible pump for the diversion of storm/sewage during the execution of work-10 hp pump