Bengaluru Water Supply And Sewerage Board Tender

Code04 - Providing and laying Ductile Iron pipes of class conforming to IS 8329:2000 with latest amendments, conveying to work site, rolling and lowering into trenches, laying true to line, level and perfect linking at joints, testing and commissioning, including loading and unloading at both destinations, cutting of pipes wherever necessary, jointing with DI specials (excluding cost of specials) and rubber gaskets, cleaning the socket and spigot end with soap solution, applying soft soap to the socket and spigot ends before insertion of rubber gaskets, jacking and fixing in perfect conditions etc. The cost to include soap solution, soft soap, waste etc. and giving necessary hydraulic test to the required pressure as per ISS with all lead and lifts and cost of all jointing materials. (The contractor will make his own arrangements for water for testing. Earth work excavation in trenches to be measured and paid for seperately) Note: In sewerage projects for internal cement mortal lining ( CML ) of DI pipes, if High Alumina Cement ( HAC ) as recommended in Annexure B clause 16.3 of IS8329:2000 is considered in place of Slag or Sulphate Resistance Cement ( SRC ), the cost of pipes may be increased by 5-6% from the prices listed. For DI K9 pipes 100mmdia pipe

Code05 - Providing and fixing DI Resilient seated soft sealing SLUICE VALVE of various dia. with body bonnet of Ductile Iron (DI) conforming ti IS-1865 with the latest amendments and of grade GGG 40/50, shaft of stainless steel, wedge fully rubber lined with EDPM seals of NBR and the valves should be vacum tight and 100% leak proof with face to face dimensions as per IS 14846-2000 with the latest amendments only. The stem sealing should be with toroidal sealing rings (minimum 2 " O " rings). Body and bonnet should be coated with Electrostatically applied Epoxy Powder Coating with minimum coating thickness of 250 micron both inside and outside. The rate is inclusive of cost of valves, T.P set, galvanized bolts & nuts and rubber insertions etc. but excluding earth work. For PN-16: (Note: TP set should be considered only for DI pipes estimate. For MS pipes estimates, TP sets cost of corresponding dia shall be deducted from the SR rates of valves and provision for corresponding dia MS flanges should be made in the estimate.) etc. complete For sluice Valve of PN 16.0 and 100mm

Code06 - Providing and fixing DI MJ specials such as branches and bends suitable for DI K7 and K9 pipes and CI LA class pipes, as per IS 13382 with latest amendments with complete accessories and fixing at site excluding earth work but including loading, unloading, freight charges etc. complete for:100mmdia MJ Collar

Code07 - Providing Ductile Iron Push on special confirming to IS 9523:2000 - All Double Socked with flanges Branch DI Un Equal Tees 200mmx200mmx100mm

Code08 - Providing, fabricating and fixing at site various diameters of MS Flanges as per IS standards to fix sluice valves as per sketch. The rate to include cost of all materials, labour, consumables, hire charges for tools and tackles, welding equipment’s etc. complete as per instructions of the Engineer in charge for: 100mmdia x 10mmth Flanges

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 50 m , and lift upto 1.5 m. Including cost of all labour complete as per specifications

Code10 - 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.

Code11 - Providing house connection with excavation in all types of soils cuttingwith machine cutter without damaging the other utilities and Providingand laying of MDPE pipe (PE80)-PN 12.5 manufactured in accordancewith ISO 4427-1996 with minimum required strength of 8 Mpa, hydraulic design stress of 6.3 Mpa and with minimum wall thickness of 2.3mm/GI pipe by making the bore of 15mm dia. size on the distribution mainsusing drilling bits or machines only and laying the pipe line at a depthnot less than 0.45 mtrs. from the road surface, including providing40mm dia. ""A"" class GI pipe as casing over the MDPE pipe from the borepoint and upto the entrance of the premises and removing the stoneslab covering of the drain and dismantling the size stone masonrywherever necessary and making bore in the wall of the premises. Onentering the premises, connection should be continued with 20mm GIpipe by making ""U"" shape for the meter point below the ground level bymaking pit with sufficient space for the easy installation and removalof the water meter and providing vertical stand pipes on both sides ofthe meter. The connection should be secured firmly on the distributionmain pipe with SS / Brass ferrule of size 1/2"" x 3/4"" and fixing the unionjoint and gate vlve / stop cock before the meter point and a reflex valve/ non-return valve should be fixed on the connection after the meterpoint. (All these fixtures should be of standard quality conforming to IS).The compression fittings for MDPE pipes conforming to ISO 14236 andits latest versions. If the connection is of HDPE pipe the work includeelectric fusion tapping T or saddles, PE 100 black colour pipe of PN 16rass cuttercum flow regulator, water tight cap with O'ring, long spigot for makingbore/tapping suitable to HDPE pipe by Electro fusion welding as per BSEN 12201-3 & EN 1555-3 standards. The Product should be tested tocomply with BS 6920 for drinking water service in WRC - NSF, UK andDVGW certificate, Germany. The Saddle should be manufactured VirginCompounded PE 100 material. Tapping Tee or Saddles with coupler andcompression fittings with cost of GI pipes, as per diagram, all specialssuch as GI tee, GI elbow, GI coupler, stopper with appurtenances, andbrass or SS tap The excavated trench should be refilled with soft selectedearth and the dismantled masonry of the drain should be re-constructedwith available size stones in CM 1:8 and providing coping in CC 1:3:6wherever required and the stone slab covering should be refixed inposition with pointing in CM 1:3 and also the bored wall of the premisesshould be re-done to the original position and the rates are inclusive ofthe cost of all the materials, cement, sand water etc., required for theseworks. The road suface should be compacted well and brought to theoriginal condition and the excess earth or debris should be disposed offto a distance with an initial lead of 10 Kms. etc. complete for the followingdiameters: (for minimum length of 2m) etc. complete 15MM DIA

Code12 - Removal of Unserviceable Soil with Disposal upto a suitable distance as directed by the Engineer incharge of work.