Chennai Metropolitan Water Supply And Sewerage Board Tender

Supplying & Laying D.I pipes class K7 as per IS 8329/2000 with rubber gasget including earthwork excavation for trenches in hard stiff clay, 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 intial lead of 10m and initial lift of 2m carting the pipes from stores yard to the site of work lowering into the trenches, aligning, refilling the trenches with excavated soil, watering and ramming to consolidation, etc. complete for the pipes of following diameters (including back filling). as per schedule. (2.0 m depth)

150mm dia D.I.pipe @ 2.0m depth

100mm dia D.I.pipe @ 2.0m depth

Cutting D.I. mains

150mm dia D.I.pipe

100mm dia D.I.pipe

Supplying,Conveying and fixing of the following specials

150mm dia M.J.Collar.

150mm dia Sluice valve

150 mm dia spigot tail piece

150 mm dia Socket Tail piece

150mm dia D/S 90 deg bend

150mm dia D/S 45 deg bend

150x100mm tee bend

100mm dia MJ collar

Making Rubber joints for D.I. pipes

150mm dia D.I.pipe

100mm dia D.I.pipe

Connection work to existing main including cutting existing pipe, fixing branches, collars, lead jointing and bailing out water, etc., excluding excavation.Cutting 150mm to 100mm (6” to 4”) C.I. pipe and fixing 150mm to 50mm (6” to 2”) branch

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 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.

150mm dia D.I.pipe

100mm dia D.I.pipe

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 1.55m

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

Supplying and laying of MDPE (PE80) Blue pipe (IS:4427) with necessary specials including earth work excavation laying jointing testing, refilling the trenches and disposal of surplus earth etc.complete.

Supplying of quarry dust including compacting curing etc complete

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

As built survey every sewage and water pipeline and other assetsmust be done using DGPS based RTK method by transferring the coordinates from the nearest static GCP of CMWSSB. Where there are signal interruption 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-odinates of the assets can then be captured by Total Station. All the features, attributes of all the assets, utilities captured shall be Geo reference as per standard coordinate reference system ( WGS 84 UTM Zone 44N). The final basemap with assets and utilities shall be furnished in (.shp) format. The geo reference 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 undergrond/surface assets along the roads for the distance ranging from: (2KM) = 19000/-. in this estimate330m length