Karnataka Urban Water Supply And Drainage Board Tender

004 - Providing and laying in position Cement Concrete for all Foundation works. The granite/trap/basalt crushed graded coarse aggregates and fine aggregates as per relevant IS Codes machine mixed with super plasticizers laid in finished layers, well compacted using needle vibrators, including all lead & lifts, cost of all materials, quality confirming to the requirements of relevant IS codes, labour, Usage charges of machinery, curing and all the other appurtenances required to complete the work as per technical specifications with all lead and lifts etc., complete and as directed by the Engineer-in-charge. M20 Design Mix using 20 mm nominal size graded crushed coarse aggregates.

005 - Supplying and fixing DI Resilient seated soft sealing SLUICE VALVE of variouis dia with body, bonnet of ductile iron (DI) conforming to IS-1865 and of grade GGG 40/50, shaft of stainless steel, wedge fully rubber lined with EDPM seals of NBR and the valves should be vacuum tight and 100% leak proof with face to face dimensions as per IS 14846-2000 only. The stem sealing should be with toroidal sealing rings (minimum 2 O rings). Body and bonnet should be coated with electrostatically applied Epoxy Powder Coating with minimum coating thickness of 250 micron both inside and outside. The rate is inclusive of cost of valves, T.P set, galvanized bolts & nuts and rubber insertions etc. but excluding earth work with all lead and lifts etc., complete and as directed by the Engineer-in-charge. (Note: TP set should be considered only for DI pipes estimate. For MS pipes estimates, TP sets cost of corresponding dia shall be deducted from the SR rates of valves and provision for corresponding dia MS flanges should be made in the estimate.) For Sluice Valve of PN 10 and 250mm dia -(Backwash valves).

006 - Providing and fixing of DI specials with ISI mark confoming to IS 9523 / 2000 suitable for jointing 100 mm to 600 mm dia DI pipes coated with rust prevention coatings as below: NOTE: A) External coating: a) Metalic zinc with finishing layer of bituminous as per Annexure A of IS:9523/2000 b) Zinc rich paint with finishing layer of bituminous as per Annexure A of IS:9523 / 2000 c) Bituminous paint as per Annexure C of IS:9523 / 2000 B) Internal Lining: a) Portaland Cement (with or without additives) mortar as per Annexure - B of IS:9523/2000 b) Cement Mortar with coat coat as per Annexure B of IS:9523 / 2000 c) Bituminous paint as per Annexure C of IS:9523 / 2000 with all lead and lifts etc., complete and as directed by the Engineer-in-charge. 250mm dia MJ collor

007 - Complete acid washing of Filter Bed and fixing of damaged tiles if any, completely with all lead and lifts & as directed by the Engineer in charge.

008 - Supplying of rapid gravity filter media of sand of effective size 0.40 to 0.60 mm and UC between 1.30 to 1.70 and Coarse pebbles of size 60 mm to 12 mm as per PHE manual. The rates are inclusive of transportation and stacking the media at Water Treatment Plant site yard with all lead and lifts etc., complete and as directed by the Engineer-in-charge.

009 - Filling the newly supplied filter media in proper depth by manual means by head load conveyance carefully in specified sizes layer by layer uniformly with all lead and lifts etc., complete and as directed by the Engineer-in-charge