Supplying and laying of 150mm Dia CI Dedicated sewer main from EMAAR Apartment to Tondiarpet F SPS in Depot 40, Area IV

Bill No:1 Laying Pumping Main of 150mm dia for a length of 0.65 km in Bus Route Roads

Supply Laying ,Jointing 150 mm dia CI S/S pipes (LA class) with EDPM rubber gaskets including earth work excavation in hard stiff clay, black cotton, hard red earth, shales, murrum gravel, stoney earth and earth mixed with small size boulders depositing the earth on banks with initial lead of 10m, carting the pipes to the site of work lowering in to the trenches, aligning includng refilling the trenches, disposal of surplus earth etc; complete at an average depth of 1.5m

Supply, conveying and fixing CI specials like Tee, Bends and Tapers as per IS 1538 including earthwork excavation, lowering into the trenches, aligning, refilling the trenches with excavated soil, watering and ramming to consolidation, etc. at any depth.

150 mm D/Soc CI 90o Bend

150 mm D/Soc CI 22.5o Bend

Jointing the CI specials with molten lead and yarn including caulking the joints and testing to the required pressure with water. (Including cost of Jointing materials)

Cutting C.I Pipes

150 mm dia

Cutting Asphaltic Road

Bus Route -GCC

Bus Route - GCC BRR

Providing Iron Barricading of size 2.50 m width and 1.75 m height using 40x40x4 mm angle for outer frame supports, 25 x 25 x 3 mm angle for inner frame supports and 20 gauge thickness MS sheet for name board (as per drawing) including cutting, welding, fabrication charges and one coat of primer and 2 coats of enamel paint of approved quality, writing "METRO WATER" & work detail/ caution sign, providing necessary interlocking arrangements with adjoining units, fixing danger flags, danger lights, reflectors, fixing stickers etc, including watching during night and placing the barricading units as directed at the sites

Testing of M.S./C.I./P.V.C./D.I pipes with hydraulic testing equipment by filling with water(including cost of water@ Rs.60/KL) and testing to recommended pressure in convenient stetches and attending the bursts if any occured during the test, excluding the cost of pipes, including other incidental and operational charges, etc., complete for 150mm dia pipe

Providing thrust blocks with Plain Cement Concrete in 1:3:6 with 40mm HBG for the CI pumping main including the cost of shuttering, compaction, curing etc. complete.

150 mm D/Soc CI 90 degree Bend

150 mm D/Soc CI 22.5 degree Bend

Cement concrete 1:3:6 using Crushed stone sand (Msand) and 40mm gauge hard broken stone jelly for plain cement concrete works including laying in layers of not more than 15cm thick including ramming curing, etc.,complete-For Road Restoration.

As built survey for every sewage and water pipeline and other assets must be done using DGPS based RTK method by transferring the coordinates from the nearest Static GCP of CMWSSB.

For the Point Underground / Surface Assets along the roads

Surface asset

Cutting asphaltic / concrete road

Cutting BT surface by using road Compressor (machinary hire charges)

Hire charges for diesel pumpset for 7.5 HP with fuel and operator charges including transportation.

Bill No.2 Specials

Specials for 150mm Sluice valve

Specials for Pumping Main at Screen Cum Suction well

Specials for 80 mm Air valve

Construction of Sluice valve chamber including providing and fixing L.S. cover and frame of size 60 x 60cm

Construction of 80mm Double Air Valve chamber for 100mm to 350mm dia.pipeline including providing and fixing FRC cover and frame of size 60 x 60cm for size 1.2 x 0.9 x 1.8 m

Jointing the CI specials with molten lead and yarn including caulking the joints and testing to the required pressure with water. (Including cost of Jointing materials)

Cutting C.I Pipes

Jointing the double flanged specials with rubber insertion to the required specifications with M.S bolts and nuts, complete.

Cement concrete1:2:4 using 12 to20 mm gauge hard broken stone jelly for reinforced concrete works excluding centering shuttering and cost of steel reinforcement but including laying in position, compacting, curing, finishing, etc., complete

For Bed Block

Bill No: 3 Electromagnetic Flow Meter

Supply, delivery, erection, testing and commissioning of Electromagnetic Flow Meter shall be a velocity sensing Electromagnetic type, microprocessor based signal converter, sealed housing, flanged tube meter for 1.0 Mpa working pressure, manufactured to highest standard available for mag-meters, equipped with minimum six digit digital totalizers, reading in different units (Kiloliters / Cubic meter) and shall be accurate within 0.5% of Measured value, shall operate within a range of 0.3 m/sec to 4 m/sec and be constructed as follows: Meter tube (Sensor) shall be fabricated from stainless steel tube and use class PN10 flat face carbon steel flanges in accordance with IS 1538. These flanges shall be welded to the flow tube. The internal and external of the meter tube shall be blasted to near white and lined with hard rubber preferably by SBR or EPDM. Meter tube shall have a constant nominal inside diameter offering no obstruction to the flow. The accuracy should be inclusive of linearity, hysteresis, repeatability, temperature and pressure effects. Coil Housing shall be fabricated from stainless steel (SS304) for corrosion resistance and welded to the tube providing a completely sealed environment for all coils, electrode connections and wiring harness capable of submerged or buried operation with IP68 Protection. Signal Converter shall be pulsed DC coil excitation type with auto zeroing.

The signal converter shall be remotely mounted away from the meter. The converter shall indicate direction of flow and provide a flow rate indication and a total of flow volume for both forward and reverse directions. The converter shall provide an isolated 4-20 mA output into minimum 500-ohm load and a frequency output of a maximum of 0-10 KHZ and a scaled pulse output, Communication interface is RS485, HART output. The microprocessor based signal converter shall have a self-diagnostic test mode and a backlit display that continuously displays “Rate of Flow” and “Total Volume”. Converter shall be supplied with a programmable low flow drop out, higher flow and empty pipe zero return. The signal converter housing should be die-cast aluminum with glass window. The converter cum transmitter should be fully programmable form the front facia. The programming should be user friendly, self-prompting menu driven. Flow meter test calibration certificate from FCRI, flow test lab / NABL accredited lab to be furnished.

Supply, conveying and fixing CI D/F pipes as per IS:1537 and CI SS/DF specials like Tee, Bends ,Tapers and Tailpieces as per IS 1538 including earthwork excavation, lowering into the trenches, aligning, refilling the trenches with excavated soil, watering and ramming to consolidation, etc. at any depth.

Specials for 80mm Electromagnetic Flow Meter

Construction of water meter Chamber in second class brick work in CM 1:4 proportion with 12mm thick outside plastering and 20 mm thick inside plastering in CM 1:3 proportion, RCC cover slab in CC 1:2:4 proportion using 20 mm jelly, chamber foundation and bed block in PCC 1:3:6 proportion using 40 mm jelly including cost of reinforcement and labour charges,earth work excavation,sand filling,refilling and disposal of surplus earth ,fixing CI steps, etc. complete and including providing and fixing L.S cover and frame of size 60cmx60cm including necessary masonry work and plastering etc complete as directed by the Engineer at site as per specification of sizeas mentioned below

Jointing the CI specials with molten lead and yarn including caulking the joints and testing to the required pressure with water. (Including cost of Jointing materials)

Jointing the double flanged specials with rubber insertion to the required specifications with M.S bolts and nuts, complete.

Cutting CI Pipes

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