Chennai Metropolitan Water Supply And Sewerage Board Tender

200 mm dia CI main, LA Class

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

Cutting of 200 mm Dia CI Pipe

Making Rubber Joints (Labour Only )

Supplying, delivery at site and fixing the following sizes of DI push - on joint specials as mentioned below confirming to IS: 9523 including loading,unloading and stacking at the site etc as directed by the engineer at site, including earthwork excavation etc complete. .

200mm DI A/s 90 deg Bend

200mm DI A/s 45 deg Bend

200mm DI A/s 22.5 deg Bend

200mm ADSoc x 80mm Fl/Tee for fixing AV

200mm FL/Soc Tail Piece for fixing Air Valve

200mm FL/Spi Tail Piece for fixing Air Valve

200mm Dia MJ Collar

Providing Sluice valve and Air valve and chambers

Supplying , delivery at site and fixing the CI sluice valves (PN 1.0) of following sizes confirming to IS: 14846/2000 including socket and flanged tail pieces etc., loading,unloading, Transportation charges and stacking etc complete as per specifications

200mm with Tail piece

200mm without Tail piece

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

Supplying, conveying and fixing the CI double air valve with sluice valve as per IS14845/2000 with ISI marking including lowering, Aligning etc,complete

80mm

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

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.66/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 the following diametres of pipes

200 mm dia CI main, LA Class

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.

0.5m length CI pipe 200mm dia A/F

1.0m length CI pipe 200mm dia A/F

2.0m length CI pipe 200mm dia A/F

200mm dia duck foot bend

200mm dia bell mounth

200 mm DI D/F 90 deg bend

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

200mm Dia 90o Bend

200mm Dia 45o Bend

200mm Dia 22.5o Bend

Hire charges for diesel pumpset for 7.5 HP for dewatering of Subsoil water.

Hire charges for JCB machine

Refilling of excavated earth other than sand

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 earth

Establishing PBM The PBM shall be created by engraving point values in black granite plaque of minimum size 30cm x 25cm x 10cm and suitably fixed on a Concrete Pillar measuring 60cm × 30cm x 30cm, height, width and breadth dimension. 40cm of the pillar should be within the suitably formed platform and 20cm must be protruding outside. This would be treated as a permanent Benchmark with relative height with reference to MSL marked on it.

Bill No.2. RTK Survey

Establishment of Static GCP: The Contractor must obtain the existing permanent benchmark from CMWSSB which should be considered as the control point with known coordinates X,Y and Z. The Static GCP must be established from this PBM using Triangulation network method and frog and leap method for linear areas. The Contractor must strictly avoid Radial offset method. If the PBM is not available with CMWSSB within the Area of interest (Aol), the contractor must procure the nearby Survey of India, GTS Benchmark available to establish the Static GCP of the project location using the above-mentioned methods only Survey consultant to ensure the closing error is within permissible limits (SOl Standards) while transferring the levels from nearest SOl GTS BM to the PBMs and the same to be presented as a report. The same process shall be adopted for random verification of positional accuracy of points established using the PBMs as base.

As built survey for every sewage and water bipeline and other assets must be done using GPS based RTK method by transferring the coordinates from the nearest Static GCP of CMWSSB. Where there are signal interruptions for the RT method, Total Station can be used. The coordinates from the static GCP shall be transferred to the Told 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 final Hard Copy in A0 print. standards and should be legible and three sets of Water SupplyAsset Underground Asset (a) For the Underground / Surface Assets along the roads for the distance ranging from:

Underground sewerage asset less than 2 km

Points

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

Interconnection locations including specials

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