Bengaluru Water Supply And Sewerage Board Tender

Hard rock (blasting prohibited)10% of Earth work qty Depth upto 1.50 m PWD SR 2021-22 ,Pg-11 I-1.21.5

Providing and laying Ductile Iron pipes of class -conforming to IS 8329:2000 with latest mendments, conveyiing 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 For DI K9 Pipes-300 (BWSSB SR 2021-22 Pg-93 I-E020E)

Supplying and fixing DI Resilient seated soft sealing SLUICE VALVE of various 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 thevalves should be vacum tight and 100% leak proof with face dimensions as per BS 5163-89 / IS 14846-000 / DN 3202 F4/F5. The stem sealing should be with toroidal sealingrings (minimum 2 “O” rings). Body and bonut should be coated with Electrostaticallyapplied Epoxy Powder Coating with minium coating thickness of 250 micron bothinside and out side. The rate is inclusive of cost of valve, T.P set, galvanized bolts &nuts and rubber insertions etc. but excluding earth work. For Suilce Valve of PN -10.0 and 300mm : BWSSB SR 2021-22 Pg-82 ,Code-25.70 (B073g)

Supplying and fixing kinetic AIR VALVE 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 grade GGG-40/50, seals are made of approved EPDM, SS 304 float, guide and internals. Flange drilling according to IS-1538 with appurtenances. complete. Body and bonnet shall be coated with electrostatically applied epoxy powdercoating with a coating thickness of 250 micron both inside and outside BWSSB SR 2021-22 Pg-84 , (B083C)

Providing, fabricating, supplying and fixing at site various diameter MS MJ ends withdummy plates (END CAPS) to suit CI / DI spigots end as per the sketch. The cost isinclusive 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. completeas per the instructions of Engineer in charge. BWSSB SR 2021-22 Pg-86 ,Code-42.50 (B090E)

Suppling Ductile Iron Push on special confirming to IS 9523:2000 . All Socketed Bends. BWSSB SR 2021-22 Pg-67 ,Code-42.50 (B090E) a.300mm diameter 11.250

300mm diameter 22.50

300mm diameter 45.00

300mm diameter 90.00

Suppling Ductile Iron Push on special confirming to IS 9523:2000 - All Socketed D.I. Equal Tees. BWSSB SR 2021-22 Pg-68 ,Code-3.50 (A014E)-300mm X 300mm X 300mm

Suppling Ductile Iron Push on special confirming to IS 9523:2000 - All D.I. Flanged MJ COLLAR BWSSB SR 2021-22 Pg-72 ,Code-10.50 (A26E)

Wet mix macadam, Providing, laying, spreading and compacting graded stones aggregate to wet mix macadam specifications including pre mixing the material with water at OMC in mechanical mix plant carriage of mixed method of 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, etc.,complete as per specifications and as directed by the Engineering-in-charge.(PWD SR 2021-22 V-3,Pg-24 I-4.27)

Providing Bedding or Back filling using approved stone dust/quarry dust of size not exceeding 5.6mm for the pipe line trenches including watering and consolidation to 95% proctor density etc., complete with all lead and lifts,etc.,complete as per specifications and as directed by the Engineering-in-charge.BWSSB SR 2021-22,Pg-75,I-A120C

Construction of granular sub-base by providing coarse graded material, spreading in uniform layers with motor grader on preparedsurface, mixing by mix in place method with by rotavator at OMC, and compacting with vibratory roller to achieve the desired density, etc.,complete as per specifications and as directed by the Engineering-in-charge.Gr-III (PWD SR 2021-22 V-3,Pg-21 I-4.01)

Dense Graded Bituminous Macadam Grading - II Providing and laying dense graded bituminous macadam with higher capacity batch type HMP using crushed aggregates of specified grading, premixed with bituminous binder @ 4.5 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 aspects.(PWD SR 2021-22,V-3,Pg-37 i-5.06

Providing and applying primer coat with Cutback MC 30 bitumen Emulsion on stabilised soil base / crusher run macadam Base including clearing of road surface and spraying primer at the rate of 0.60 kg/m2 using mechanical means.(PWD SR 2021-22,Pg-35,i-5.01)

Close Graded Premix Surfacing/Mixed Seal Surfacing Providing, laying and rolling of close graded premix surfacing material of 20 mm thickness Composed of 11.2 mm to 0.09 mm (Type-a) or 13.2 mm to 0.09 mm (Type-b) aggregates using viscocity grade bitumen to required line, grade and level to serve as wearing course on a previously prepared base,including mixing in a suitable hot mix plant of appropriate capacity not less than 200 tonnes / hour, laying and rollingwith a Smooth wheeled roller finishing to required level and grade. Type -A (PWD SR 2021-22,Pg-38,39 I-5.08)

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/ sec Power Supply : For the entire diameter pipes (100 mm to 300 mm) 230 Volts AC power supply with surge arrester. Inbuilt rechargeable battery to provide backup for minimum 6 hrs battery backup in the absence of Grid Supply. Galvanic Isolation : All circuits of output and power supply to Galvanizically Isolated. Tube Lining Material : PTFE liner. Electrode material : SS 316L Flow meter Housing : Fully Welded and corrosive 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 to see the reading during night time. All diagnostics should be visible on the 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 provided for each line size. Data Logger: Internal / External with flow meter and data to be transmitted to server automatically for every 1 hour. Flow meter shall send 24 data message per day to remote server. Locally for every 5 minutes of interval in data logger. Per day 288 readings will be logged, per month 8640. Data of previous 1 year should be logged in to either 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 pipes (100 mm to 300 mm) 230 Volts, AC power supply with surge arrester. Inbuilt techargeable battery to provde backup for minimum 6 hrs battery backup in the absence of Grid supply. Output : 4-20 m Amps, digital and pulse outputs, Status Outputs, GPRS (Should Support GSM also). Data Logger Output : Through RS 485/ Ethernet. Unit of Display: M3 (Cubic Meter) / hr, MLD, ML (Programmable). Enclosure Material: Aluminum alloy with polyurethane quoting. Flow meter Standards : Testing & Calliratin: IS/ ISO 17025 ,ISO 9140 Meter Standard : ISO 4064 Calibration and Testing: All the flow meters to be calibrated at manufacturer work place. Calibration / Test certificates to be provided as per IS / ISO 17025, periodical calibration facility to be provided if required. Specification for Padestal Panel for Transmitter Unit : 1) The electronic display unit shall be installed on a removable backboard. Itshould be an anti corrosive material. Enclosure should be designed for IP54, separate ompartment for energy meter & converter and flow meter display unit & modem. Generated heat inside the flow meter should be dissipated and should not cause any harmful effects inside enclosure, wall or post mounting cabinet enclosure. The enclosure shall be constructed from galvanized steel which is at least 3 mm thick. The enclosure shall have a hinged access door, which shall have a facility for padlocking in the closed position. Batteries shall be easily accessible for periodic changing. For floor mounting enclosures, the enclosure shall be mounted on a concrete plinth, the surface of which shall be at least 120 cm above the surrounding finished ground level. A cable duct shall pass through the ;linth to enable the cable from the flow sensor to enter the enclosure. A lable showing details of the Employer’s name and the water meter’s unique reference number shall be fixed to the external face of theaccess door. Contractors or equipment manufacturer’s details shall not be fixed to the external face of the access door. 2) Transparent toughened glassed of size 10 cm x 5 cm to be provided to see reading of BESCOM energy meter and flow meter separately. Panel should be provided with lock, master key, fan & filter for cooling / heat dissipation. 3) The enclosure shall be well-ventilated, dust-proof and vermin-proof, and be suitable for robust use in a tropical climatge. It shall also be suitable for : a) the housing of the integral data logger and the temporary housing of a battery powered data logger which could periodically be used in conjunction with the water meter. b) the permanent housing of any lightning protection system the permanent housing of GPRS transmitter and battery pack, and any other items necessary to facilitate communication with the central server. c) The permaent housing of BESCOM energy meter. The bulk meter totalizer / register shall be started immediately on installation of water meter. Concerned officer shall strictly check testing and calibration rtificate to ensure quality. Necessary agreement shall be made by concerned officer for warranty and other conditions. The bulk meter reading shall be synchronized to remote server at Cauvery Bhavan immediately. Civil, Mechanical and Electrical charges extra to be estimated. 1.The bulk meter totalizer / register shall be started immediately on installation of water meter. 2. Concerned officer shall strictly check testing and calibration certificate to ensure quality. 3. Necessary agreement shall be made by concerned officer for warranty and other conditions. 4.The bulk meter reading shall be synchronized to remote server at Cauvery Bhavan immediately. 5.Civil, Mechanical and Electrical charges extra to be estimated. (BWSSB SR 2021-22 Pg-178I-R010E)

Supply and laying of LG UT cable having aluminium conductor PVC insulated, sheathed, galvanized steel wire / steel tap armored cable with PVC over sheathing(BWSSB S 2021-22,Pg-178,I-R060A)

Supply and Laying of multi-core sensor cable from the sensor probes to the transmitter panel(BWSSB S 2021-22,Pg-178,I-R060A)

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 (PWD SR 2021-22,Pg-35, I-1.9)