Bengaluru Water Supply And Sewerage Board Tender

No.3b - Pipe of 219mm dia -7mm thick

No.4 - Providing and fixing DI Resilient seated soft sealing SLUICE VALVE of variouis 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-10: (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 (a) For Suilce Valve of PN 16 and 300mm

No.4b - For Suilce Valve of PN 16 and 200mm

No.5 - Providing, fabrication, supply & fixing at site of various diameter M.S. Flanges as per IS standards to fix sluice valves as per sketch. The rate is inclusive of all materials, labour, consumables, hire charges for tools & tackles, welding equipment etc complete as per instructions of the Engineer in charge (a) Flanges of 200mm dia and 20mm thick. 5.30.5

No.5b - Flanges of 300mm dia and 20mm thick. 5.30.9

No.6 - Providing, fabricating, supplying and fixing at site various diameterMS MJ ends with dummy plates (END CAPS) to suit CI / DI spigotsend as per the sketch. The cost is inclusive of all materials, i.e, rubber‘O’ rings, flanges, bolts and nuts, dummy plates, consumables, hirecharges, tools and welding equipments, lead and lifts, etc. completeas per the instructions of Engineer in charge.65.1 (a) For CI / DI pipes of 300 mm dia.

No.7 - Providing Ductile Iron Push on special confirming to IS 9523:2000 - All D.I. Flanged MJ COLLAR 300.00 mm

No.8 - Manufacturing, providing, transporting, rolling, lowering, laying and jointing, testing and commissioning of MS specials of minimum 8 mm thick conforming to IS 7322:1985 with latest amendments, perfect linking and welding of joints to correct position including cost and conveyance of materials with all lead and lifts, cost of all labour and giving satisfactory hydraulic test as per IS 3589:2001 with latest amendments for test pressure and working pressureboth at factory and site etc., complete as per detailed specifications with inside lining two coats of food grade epoxy painting of approved make witheachcoat of 250 micron, thick (after dry) over one coat of food grade epoxyprimer of approved make with minimum of 50 micron thick (after dry) and outside 25mm thick coating in CM 1:3 by providing 50 x 50mm weld mesh including loading and unloading of pipes for the following category to suitPSC / MS / CI / AC / DI / PVC pipes. The rates are inclusive of all taxes and duties. The weight of the MS shell only be 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) (a) MS / PSC / CI / DI / PVC / AC pipe bends, tail pieces, reducers etc.

No.9 - Refilling of available earth around pipe lines, in layer not exceeding 20cms in depth, compacting each deposited layer by ramming after watering all lead and lift including cost of labour including consolidation by mechanical means approved by Engineer in charge, when earth is at suitable moisture content with desired field density upto 95% maximum dry density (modified heavy proctor test) for restoration of roads without settlement including HOM of machineries, complete. (The contractor shall take care while consolidating the earth, so that, pipe laid are not damaged due to mechanical compaction and shall restore the damaged pipes at his own cost, in case of damage)

No.10 - Removal of Unserviceble soil with disposal upto suitable distance as directed by engineer in chargeof work.

No.11 - Providing, laying, spreading andcompacting 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 in sub- base / base course on well prepared surface and compacting with vibratory roller to achieve the desired density.

No.12 - Prime Coat over WMM/WBM Prime Coat over WMM/WBMProviding and applying primer coat with SSI grade Bitumen Emulsionon prepared surface of granual base including cleaning of road surface andspraying primer at the rate of 0.70 kg perm2 using mechanical means.

No.13 - Providing and applying tack coat withBituminous Emulsion using emulsion pressure distributor at the rate of 0.2kg/m2 on the prepared bituminous surface cleaned with mechanical broom

No.14 - Providing and laying dense graded bituminous macadam with highercapacity batch type HMP using crushed aggregates of specified grading, premixed with bituminous binder @ 4.0 per cent by weight of total mix and filler, transporting the hot mix to work site,laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MoRTH specification clause No. 505 complete in all respects.

No.15 - Providing and laying bituminous concrete with higher capacity batch type HMP using crushed aggregates of specified grading, premixed with bituminousbinder @ 5.4 per cent of mix and filler,transporting the hot mix to work site,laying with a hydrostatic paver finisherwith sensor control to the required grade,level and alignment, rolling with smooth wheeled, vibratory and tandem rollers toachieve the desired compaction as perMORTH specification clause No. 507 complete in all respects,

No.16 - Dewatering the sewage/ stormwater by using required HP submersible pump for work consideration

No.17 - Supply, Installation, Commissioning and Testing of GPRS + GSM based EMI flow meters on the Bulk water connections ranging from 100 mm to 300mm. The electromagnetic meters should comprise of the specifications given in the notes of this chapter.III) Providing Electromagnetic Induction AMR water meters for 100 mm to 300 mm diameter. Supply, Installation, Commissioning and Testing of GPRS + GSM based EMI flow meters on the Bulk waters connections ranging from 100 mm to 300 mm. The electromagnetic meters should comprise of following specification. Specification: 1. Specification of electromagnetic induction Flow meters Application : Raw or Potable Water with chlorine content Conductivity : Maximum 500 MS/CM Accuracy : +/- 0.5% flow reading. Velocity Range : 0 .3 m / sec to 10 m/ secPower Supply : For the entire diameter pipes (100 mm to 300 mm) 230Volts AC power supply with surge arrester. Inbuilt rechargeable batteryto provide backup for minimum 6 hrs battery backup in the absenceof Grid Supply. Galvanic Isolation : All circuits of output and powersupply to Galvanizically Isolated. Tube Lining Material : PTFE liner.Electrode material : SS 316L Flow meter Housing : Fully Welded andcorrosive resistant Painted Carbon / Sheet Steel. (Housing Single unit) Electrodes : 2 measuring electrodes/4 measuring electrodes Display Unit : 2 or 3 Line LCD display 16 characters per line with backlight tosee the reading during night time. All diagEachtics should be visible onthe LCD screen 1st line : Flow Rate in m3 / hr 2nd line : Totaliser m3 3rd Line : Electrode deposition / tamper status display Flange material : CS Flange Type of Flange : ANSI/ DIN type Flange Sensor protection : IP 68 Transmitter Protection Flow meter Ambient Temperature : up to 60 º C Exact full model code and datasheet of the flow meter to be providedfor Each line size. Data Logger: Internal / External with flow meter anddata to be transmitted to server automatically for every 1 hour. Flowmeter shall send 24 data message per day to remote server. Locally forevery 5 minutes of interval in data logger. Per day 288 readings will belogged, per month 8640. Data of previous 1 year should be logged in toeither internal / external data logger 2. Specification for Flow Sensors : Mounting : In field on pipeline (flow through flow Sensor). Line Sizes : 100 mm to 300 mm. Material of Flow Tube : SS316 / SS304 Grounding : Grounding / Earthing is required to protect flow meter from spurious signal. Earthing rings shall be provided at both flange ends. This will provide high degree of protection as compared to earthing electrode Electrodes : SS316L Weather Protection for Flow Tube : IP68 Empty Pipe Detection (EPD) : Integral part of design with electrode. The sensors should be as per ISO Standard lengths (ISO 13359) as applicable, so that interchangeability can be carried out. The sensors shall also have built in grounding and empty pipe detection facility 3. Specification for Flow Transmitter/Computation: Mounting : Transmitter panel mounted outside the meter Chamber in proper location. Type : Microprocessor based : 4 wire Protection : IP67 Power supply : For the entire diameter(BWSSB SR Vol III Page No.175 Sl no.14.1.5) (a) For Bulk Flow Meters, sensors, transmitter, panels etc. for 200mm dia.

No.17b - For Bulk Flow Meters, sensors, transmitter, panels etc. for 300mm dia

No.18 - Supplying and fixing kinetic AIR VALVE PN 16.0 for automatic discharge of accumulate air during working condition, conforming to IS 14845 / EN 1074-4. Body and bonnet of DI conforming to IS-1865 of gradeGGG-40/50, seals are made of approved EPDM, SS 304 float, guideand internals. Flange drilling according to IS-1538 with appurtenances. complete. Body and bonnet shall be coated with electrostatically applied epoxy powder coating with a coating thickness of 250 micron both inside and outside (a) For K Air Valves of 150mm dia.

No.19 - Providing, filling and laying of sand bags filled with sand / clay for diversion of sewage during execution of work.

No.20 - Dismantling of existing structures likeculverts, bridges, retaining walls and otherstructure comprising of masonry, cementconcrete, wood work, steel work, includingT&P and scaffolding wherever necessary,sorting the dismantled material, disposalof unserviceable material and stacking theserviceable material with all lifts and lead Prestressed / RCC grade M-20 & above (a) For small works