Chennai Metropolitan Water Supply And Sewerage Board Tender

a) 100mm dia DI pipe at 1.50m depth

b) 250mm dia DI pipe at 1.50m depth

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 Pipe

a) 100mm dia DI pipe at 1.50m depth

b) 250mm dia DI pipe at 1.50m depth

Conveying and fixing of specials

100mm dia Tee

100mm dia MJ Collar

100mm dia 90 Degree Bend

100mm dia Sluice Valve

250mm dia Tee

250mm dia MJ Collar

250mm dia 90 Degree Bend

250mm dia Sluice Valve

Making Rubber joint

a) 100mm dia DI pipe

c) 250mm dia DI pipe

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 the following diametres of pipes.

a) 100mm dia DI pipe

c) 250mm dia DI pipe

Hire charges for diesel pumpset for 5HP

Disjointing and refixing valves with tail pieces, etc., excluding excavation

a) 100mm dia DI pipe

c) 250mm dia DI pipe

Construction of chamber for 100mm to 250mm dia. sluice valve including providing and fixing L.S. cover and frame of size 60 x 60cm

Additional work of strom water crossing of DI water main pipes with 200mm dia PVC covering pipe including breaking and packing SWD concrete walls.

a) 100mm dia DI pipe

c) 250mm dia DI pipe

Rectification of damaged house service sewer connections

110mm dia U-PVC pipe

110mm dia PVC Coupler

Fitter (pipe laying/Bar bending ) II Class

Boring and Tapping mains or Re-boring and Tapping main and fixing brass screw plugs or ferrules of sizes.

15mm to 25mm (1/2” to 1”)

32mm to 50mm (1 ¼” to 2”)

Providing suitable dia non corrosive engineering plasticmouldedClampSaddlewithSS304threaded metal insertedfor tapping outlet suiting for ½”,3/4”&1”clear bore and with wide plastic strap(EngineeringPlastic)withSS304suitablebolts &nuts.Saddle to have sealing of Thermoplastic elastomeric (TPE) material around.

20mm (1/2”)

25mm (3/4”)

32mm (1”)

MDPE PE80 PN16 Blue pipe as per standards ISO4427and Tested as per BS6920 in WRC-NSF LTD, UK

20mm (1/2”)

25mm (3/4”)

32mm (1”)

Returning of old HDPE pipes to Stores of various size

50MM OD TO 110MM OD

200MM OD TO 315MM OD

Additional work of strom water crossing for House Service water connection with 50mm dia PVC covering pipe including breaking and packing SWD concrete walls.

SCENARIO- 2: TBM Available

The Contractor must obtain the existing Static GCP points from CMWSSB which should be considered as the control point with known coordinates X, Y and Z. Survey consultant to ensure the closing error is within permissible limits (SoI Standards) while transferring the levels from the existing Static GCP points 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 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.

For the Underground / Surface Assets along the roads for the distance ranging from: (2 Km to 5 Km)

For the Point Underground / Surface Assets along the roads

Total excluding GST

GST @18%