Chennai Metropolitan Water Supply And Sewerage Board Tender

a) 150 mm Ø Pipes at 2m depth

b) 100 mm Ø Pipes at 2m depth

c)450mm Ø Pipes at 2m depth

Barrication work along one side of the trench for laying the pipe line with casurina post 1.52m centre to centre (8 to 10 cm dia. And 1.52m height) verticals, painting the verticals, painting the vertical posts in different colours, tieing with coir rope, fixing danger flags, danger lights, reflectors including watching during night for 1metre.

Supplying of specials

a) 150 mm dia M.J Collar

b) 150 x 100 mm taper

c) 150 mm 90 degree bend

d) 150 mm 22 1/2 degree bend

e) 150 mm dia Sluice valve

f) 150 mm dia DI Spi. Flange tail piece

g) 150 mm dia DI Soc. Flange tail piece

h) 100 mm dia Sluice valve

i) 100 mm dia DI Spi. Flange tail piece

j) 100 mm dia DI Soc. Flange tail piece

k) 100 mm dia MJ Collars

l) 450mm dia MJ Collar

m) 450mm dia End cap

n) 150 mm dia EDPM Rubber Gasket

o) 100 mm dia EDPM Rubber Gasket

p) 450 mm dia EDPM Rubber Gasket

Conveying and fixing specials

a) 150 mm dia M.J Collar

b) 150 x 100 mm taper

c) 150 mm 90 degree bend

d) 150 mm 22 1/2 degree bend

e) 150 mm dia Sluice valve

f) 150 mm dia DI Spi. Flange tail piece

g) 150 mm dia DI Soc. Flange tail piece

h) 100 mm dia Sluice valve

i) 100 mm dia DI Spi. Flange tail piece

j) 100 mm dia DI Soc. Flange tail piece

k) 100 mm dia MJ Collars

l) 450mm dia MJ Collar

m) 450mm dia End cap

Cutting D.I. mains - Labour only

a)150 mm Ø Pipes

b)100 mm Ø Pipes

c) 450mm Ø Pipes

Making Rubber joints - Labour only

a)150 mm Ø Pipes

b)100 mm Ø Pipes

c) 450mm Ø Pipes

Construction of thrust blocks using Cement Concrete 1:3:6 ,40mm B.G.jelly for Plain Cement Concrete for

a) 150 mm Ø 90 degree bend

c) 150 mm Ø 22 1/2 degree bend

Connection work to existing main including cutting existing pipe, fixing branches, collars, lead jointing and bailing out water, etc., excluding excavation.

Interconnection from existing 450mm DI water main to 150mm DI water main

Hire charges for diesel pumpset above 3HP to 7.5HP with fuel and operator charges including transportation.

Testing of D.I.pipes with hydrulic testing equipment by fillling with water (including cost of water @ Rs.77/KL) and testing to recommended pressure in convenient sretches and attending the bursts if any occurred during the test, excluding the cost of pipes, including other incidental and operational charges,etc., complete.

a) 150mm Ø Pipes

b) 100mm Ø Pipes

Construction of chamber for 100mm to 250mm dia. sluice valve including providing and fixing FRC cover and frame of size 60 x 60cm for size 1.35 x 1.2 x 1.55 m

Earthwork excavation and deposting on bank with initial lead of 10 meteres and initial lift 2.00m in hard stiff clay, stiff black cotton, hard red earth, shales, muram, gravel, stoney earth and earth mixed with small size boulders S.S. 20-B.(excluding timbering and bailing out sub-soil water) as per P.W.D. standard schedule of rates for chennai city for IC work.

Supplying, laying jointing and testing 100mm dia SW pipe including earthwork excavation for trenches in hard stiff clay, stiff black cotton, hard red earth, shales, murams, gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil, depositing the earth on banks with initial lead of 10m. lowering the pipes into the trenches, aligning,refilling the trenches with excavated earth in layers of not more than 23cm thick watering, ramming to consolidation and disposal of surplus earth etc., complete at an average depth of 2.0m. For damaging the House Service Connection

Providing Wet mix macadam including premixing the material with water at OMC in mechanical mix plant carriage and laying in uniform layers and compacting etc.Complete as per clause 406 of MORT&H specifications

Cement concrete 1:2:4 using Crushed stone sand (M sand) and 12 to 20mm gauge hard broken stone jelly for plain concrete work including laying compacting curing, etc., complete.

Disposal of surplus excavated earth

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/ Polyurethrene/ PTFE 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)/ Die cast Aluminium/ Carbon steel with anticorriosive paint 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. 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 from 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.

Towards charges for as built survey for every sewage and water pipeline and other assets must be done using DGPS RTK method by transfering the co-ordinate from the nearest static GCP of CMWSSB. Where there signal interuption for the RTK method, total station can be used. The co-ordinate from the static GCP shall be transfered to the total station by RTK method and the co-rdinate of the nearest static GCP can be caaputred by total station

Sub Total (Excluding GST)

GST @ 18%