Bengaluru Water Supply And Sewerage Board Tender

No.4 - 150mm dia K7

No.5 - 100mm dia K9

No.6 - 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

No.7 - Removal of unserviceable soil with disposal upto a suitable distance as directed by the Engineer incharge of work. For

No.8 - Manufacturing, providing, trasporting, rolling, lowering, laying, jointing & testing and commissioning of MS specials of minimum 8mm thick such as bends, tail pieces, reduces etc. conforming to IS-7322:1985 with latest amendments and including perfect linking and welding of joints to correct position includng cost and conveyance of materials with all lead and lifts, cost all labour and giving satisfactory hydraulic test as per IS:3589:2001 with latest amendments for test pressure and working pressure both at factory and site etc. complete as per detailed specifications with inside lining two coat of food grade epoxy painting of approved make with Each coat of 250 micron thick (after dry) over one coat of food grade epoxy primer of approved make with minium of 50 micron thick (after dry) and outside 25mm thick coating in CM 1:3 by providing 50x50mm weld mesh including loading and unloading of the pipes for the following category to suit PSC / MS / CI / AC / DI / PVC pipes. The weight of MS shell only by considered before lining and coating for arriving at the rate. The thickness of plate will be specified by the engineer. (Contractor will make his own arrangements for procuring water for testing for: Note: 1) For small works where the C.M. lining is not practicable for inside surface of the pipe, food grade expoxy painting of two coat over one coat of epoxy primer may be proposed and got approved. 2) The above rates are applicable only for pipe works etc. complete for

No.9 - Providing and fixing DI Resilient seated soft sealing SLUICE VALVE of variouis dia. with body bonnet of ductile iron (DI) conforming to IS-1865 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 only. The stem sealing should be with toroidal sealing rings (minimum 2 “ O “ rings). Body and bonut 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. (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.) For Suilce Valve of PN 16.0 100mm dia

No.10 - For Suilce Valve of PN 16.0 and 150mm

No.11 - For Suilce Valve of PN 16.0 and 200mm

No.12 - 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

No.13 - Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, cement concrete, wood work, steel work, including T&P and scaffolding wherever necessary, sorting the dismantled material, disposal of unserviceable material and stacking the serviceable material with all lifts and lead

No.14 - A toe wall for toe protection can either be in dry rubble masonry incase of dry rubble pitching or pitching with stones in wire crates or it can be in PCC M15 nominal mix if cement concert block have been used for pitching . Rates for toe wall can be adopted fromrespective clauses depending upon approved design. The rate for excavation for foundation, dry rubble masonry and PCC M15 have been analysed and given in respective chapters of different volumes.

No.15 - Providing, fabricating and fixing at site various diameter MS MJ ends with dummy plates (END CAPS) to suit CI / DI spigots end as per the sketch. The cost is inclusive of all materials, i.e, rubber 'O' rings, flanges, bolts and nuts, dummy plates, consumables, hire charges, tools and welding equipments, lead and lifts, etc. complete as per the instructionsof Engineer in charge. 100 mm dia

No.16 - 150mm dia

No.17 - 200mm dia

No.18 - Providing house connection with excavation in all types of soils cutting with machine cutter without damaging the other utilities and Providing and laying of MDPE pipe (PE80)-PN 12.5 manufactured in accordance with 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 mains using drilling bits or machines only and laying the pipe line at a depth not less than 0.45 mtrs. from the road surface, including providing 40mm dia. "A" class GI pipe as casing over the MDPE pipe from the bore point and upto the entrance of the premises and removing the stone slab covering of the drain and dismantling the size stone masonry wherever necessary and making bore in the wall of the premises. On entering the premises, connection should be continued with 20mm GI pipe by making "U" shape for the meter point below the ground level by making pit with sufficient space for the easy installation and removal of the water meter and providing vertical stand pipes on both sides ofthe meter. The connection should be secured firmly on the distribution main pipe with SS / Brass ferrule of size 1/2" x 3/4" and fixing the union joint and gate valve / stop cock before the meter point and a reflex valve/ non-return valve should be fixed on the connection after the meter point. (All these fixtures should be of standard quality conforming to IS). The compression fittings for MDPE pipes conforming to ISO 14236 and its latest versions. If the connection is of HDPE pipe the work include electric fusion tapping T or saddles, PE 100 black colour pipe of PN 16 /SDR 11 or Higher grade conforming to standards with brass cutter cum flow regulator, water tight cap with O'ring, long spigot for making bore/tapping suitable to HDPE pipe by Electro fusion welding as per BS EN 12201-3 & EN 1555-3 standards. The Product should be tested to comply with BS 6920 for drinking water service in WRC - NSF, UK and DVGW certificate, Germany. The Saddle should be manufactured Virgin Compounded PE 100 material. Tapping Tee or Saddles with coupler and compression fittings with cost of GI pipes, as per diagram, all specials such as GI tee, GI elbow, GI coupler, stopper with appurtenances, and brass or SS tap The excavated trench should be refilled with soft selected earth and the dismantled masonry of the drain should be re-constructed with available size stones in CM 1:8 and providing coping in CC 1:3:6 wherever required and the stone slab covering should be refixed in position 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 of the cost of all the materials, cement, sand water etc., required for these works. The road suface should be compacted well and brought to the original condition and the excess earth or debris should be disposed off to a distance with an initial lead of 10 Kms. etc. complete for the followingdiameters: (for minimum length of 2m) etc. complete.(SR 2023-24, Vol-V, P. No.21, SL No-2.21.1 )

No.19 - Installation, Commissioning and Testing (for receipt of readings to the Bulk Flow Metering and Monitoring System SCADA Centre ) of HART output ( flow rate and Totalizer) based Electromagnetic Induction Bulk Flow Meters approved make to the feeder mains . The flow meter shall be full bore type shall be installed as per Manufacturer Recommendations. The Electromagnetic Induction Bulk Flow meters shall comply with the specifications mentioned. The maximum allowable measuring error shall be +/- 0.2 % of the volume. The meter transmitter shall convert the HART Output to produce reliable and correct output. The data to the remote server shall be transmitted with HART Protocol Remote Telemetry Device(RTU)..The Remote Telemetry Devices to Monitor the Real Time Water Flow and Totalizer by converting Output from Bulkflow meter (the Output is of HART output). The transmitter or the modem provided shall be of HART ( Highway Addressable Remote Transduser) type, which shall work in the master mode to read the totalizer and flow rate including panel box. The Remote Telemetry Devices shall have atleast the following specification.All data will be read via HART protocol and transmitted to the client Server via FTP Hardware:: Power: 12V DC, Connectivity: Builtin 3G with 2G fall back connectivity, Input HART: Builtin HART Modem in Master Mode to read flow rate and totalizer value, Digital inputs to connect to Door sensor and AC relays, One Relay output to switch on Light inside the enclosure, One MicroUSB port to configure the gateway, Customized sheet metal box, Operating Temperature: -10 to +70 Deg C operating, High Gain GPRS Antennae. Software :: Linux based Operating System, Programmable via C and Node.js, ReAP Framework supporting HTTP and FTP, Option to configure 3 FTP Sites for data transfer, Option to configure 1 HTTP url for data transfer, Automatic Upgradation of Firmware and Configuration Software via Over the Air. The cost includes all materials,accessories,labour complete. Battery Operated