Proposal for laying of 250mm dia CI dedicated sewage pumping main from VGN Highness Layout at Iyappanthangal to Chettiyar Agaram SPS, Depot 150, Area XI

Amount

Cutting of road surface

Non bus route road

Bus Route road

Supplying, delivery, convevying and laying CI Class 'LA' S/S pipe conforming IS code 1536/2001 including earth work excavation fpr trenches in hard stiff clay, block cotton, hand red earth, shales, murams, gravels stoney earth and earth mixed with small size boulders and hard gravelly soils depositing the earth on banks with initial lead 10m and lift 2m, carting of pipes from any of board stores to the site of work lowering into trenches, aligning, refilling the trenches with excavated soil,watering and ramming to consolidation etc

250mm dia Pipe @ 1.5m depth

Supply, Conveying and fixing specials like Tee, Bends and Tapers including earthwork excavation at any depth

250mm D/soc CI 90 deg Bend

250mm D/soc CI 45 deg Bend

250mm D/soc CI 22.5 deg Bend

250mm CI Collar

Providing thrust blocks with Plain cement concrete in 1;3:6 with 40mm HBG for the DI pumping main including the cost of shuttering, compaction, curing etc complete.

250mm D/soc CI 90 deg Bend

250mm D/soc CI 45 deg Bend

250mm D/soc CI 22.5 deg Bend

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

Disposal of Surplus earth upto a lead of 5Km as directed by the Engineer in charge

Testing of CI pipe with Hydraulic pressure testing equipmet by filling up of water to the required pressure in the concerned stretches as directed by the Enginner Incharge

250mm dia LA class CI pipe

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

Cutting of CI pipes

250mm dia LA class CI pipe

250mm DN Sluice valve

80mm Sluice valve

80mm Double Air valve

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 250mm Sluice valve

250mm x 150 mm D/S taper

250 mm 1.0m Cut Pipe

250 mm CI collars

250 mm F/Spi Tail Piece

250 mm F/Soc Tail Piece

Specials for 80 mm Air valve

250 mm x 80 mm D/Soc/Fl Tee

250 mm Dia Sluice valve

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

80 mm Dia Double Air valve

Interconnection work for 250mm dia pumping main with collection well at Chettiyar Agaram SPS

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. Where there are signal interruptions for the RTK method, Total Station can be used. The coordinates from the static GCP shall be transferred to the Total Station by RTK method and the co- ordinates of the assets can then be captured by Total Station. All the features, attributes of all the assets, utilities captured shall be Geo referenced as per standard Coordinate reference system (WGS 84 UTM Zone 44N). The final base map with assets and utilities shall be furnished in (.shp) format. The geo referenced assets and utilities along with the attributes (as specified by the GIS Wing, CMWSSB) shall be converted into proper geo database (FGDB / PGDB)with the attributes. One set Hard and Soft Copy of all the CMWSSB assets and utility has to be prepared category wise network wise in A0 Print for verification in a print scale of 1:1000 in A0 plot, with standard legends in international and NUIS standards and should be legible and three sets of final Hard Copy in A0 print.

(a) For the Underground / Surface Assets along the roads for the distance ranging for 2 to 5 km For TBM available

Sub Total (excluding GST)

V R G Constructions Private Limited (BID ID -1534378)

BLM INFRA PRIVATE LIMITED (BID ID -1535139)

v chinnadurai project infra private limited (BID ID -1534135)