M and R to OPTL WSS...Replacement of damaged 675 mm dia MS HOC gravity main pipeline by 300 mm dia MS pipeline at Savala road crossing and 300 mm dia CI PW pipeline by 80 mm dia GI pipeline from SBI to Raw water Pump House

Description

Item no.1. Dismantling of existing 675 mm dia MS pipe line having length of 100 mtr with clearingof site for laying of new 300 mm MS pipeline across Savala road along with disconnection and reconnection of existing tapping connections of 7 nos. consumers, etc. including all materials, labours, pipe cutter, Hydra, Other machineries including transportation etc. complete.

Item no.2. Dismantling of existing 300 mm dia C.I pipe line with clearing of site for erection of new 80 mm G.I. pipeline at tapping point with disconnection and reconnection including all materials, labours, pipe cutter, Hydra, Other machineries including transportation etc. complete.

Item no.03. Excavation for foundation in earth, soil of all types, sand, gravel and soft murum, including removing the excavated material up to a distance of 50 m. beyond the building area and stacking and spreading as directed, dewatering, preparing the bed for the foundation and necessary back filling, ramming, watering including shoring and strutting etc. complete. (Lift upto 0.00 to 1.50 m.) By Manual Means

Item no.4. Providing and laying in trenches 80 mm dia. medium grade having embossed as ISI Mark galvanised iron pipes of 8.57 Kilogram/meter necessary fitting remaking good the demolished portion with filling trenches and with primer of anti-corrosive oil paint, 2 coats Including removing existing pipe line if necessary and conveying and stacking the same in PWD chowky or as directed etc. complete.

Item no.5. Manufacturing, providing and supplying spirally welded / ERW/ SAW / fabricated M. S. pipes (Commercial Quality) including procurements of plates, gas cutting to requried size rolling, tack welding assembling in suitable lengths to form pipes, welding on automatic welding machine and forming ‘V’ edge on both ends of pipes including railway freight, insurance, unloading from railway wagon, loading into truck, transport to stores, unloading, stacking excluding GST levied by GOI & GOM in all respect, etc, complete as per IS - 3589 and IS-5504 as applicable as per specifications (No negative tolerance in thickness is permissible). 5.1 Dia of Pipe : 323.90 mm (O. D.) Thickness of pipe 5.1.1 : 4) 7.9 mm

Item no.6. Lowering, laying in position to correct line and level including M. S. pipes with / without any outcoating on pedestals or chairs upon prepared formation. The rate to include loading, unloading, hoisting, marginal cutting wherever required, assembling and tack welding, and transportation upto 500 M. etc. completed as specified. 6.1 5 mm to 8 mm thick 6.1.1 ii)) Above 250 mm. Upto 500 mm. dia.

Item no.7. Providing and laying Cast in situ/Ready Mix cement concrete in M20 of trap/ granite/quartzite/gneiss metal for plain or molded sills, cornice, jambs, block in course, or architraves of required size and shapes including steel centering, formwork, laying/ pumping, compacting, roughening them if special finish is to be provided,finishing uneven and honeycombed surface and curing etc. complete. The Cement Mortar 1:3 plaster is considered for rendering uneven and honeycombed surface only. Newly laid concrete shall be covered by gunny bag, plastic, tarpaulin etc. (Wooden centering will not be allowed.) With fine aggregate (Crushed sand VSI Grade)

Item no.8. Providing double flange sluice valve confirming for IS- 14846 including worn gear arrangements as per test pressure, stainless steel spindle, caps, including inspection charges, transportation upto departmental store, unloading, stacking excluding GST levied by GOI & GOM in all respect etc. complete. 8.1 Sluice valve - PN - 1.6 (With by pass arrangement) 8.1.1 3) 80 mm.

Item no.9. Lowering, laying and jointing in position following C.I.D/F Reflex valves, Butterfly valves and Sluice valves including cost of all labour jointing material, including nut bolts and giving satisfactory hydraulic testing etc. complete. (Rate for all class of valves.) 9.1 Lowering,laying and jointing in position following C.I.D/F Reflex valves, Butterfly valves and Sluice valves 9.1.1 3) 80 mm.

Item No.10. Dismantling Joints 10.1 Providing, erecting and commissioning M.S. Dismantling joint as per requirement and Department's approved drawing and specifications, including machining and rubber rings and suitable for 16 kg/cm2 working pressure with required flanges of suitable size with nut bolts etc complete. The joint should have through long bolts so that during normal working pressure there should be no sliding movement of sliding flanges. L.O.F. ( length over flange ) should not be less than 75% of dia. 10.1.1 PW 6-5) 300 mm dia Joint

Item No.11. Providing and supplying Kinetic Double Orifice type Air Valves confirming to IS 14845 as per MJP’s standard specifications combined with screw down isolating valve, small orifice elastic ball resting on a gun metal orifice nipple, large orifice vulcanite ball seating on moulded seat ring, inlet face and drilled, including insurance, third party inspection charges, loading, unloading, transportation upto departmental stores, excluding GST levied by GOI & GOM in all respect etc. complete. 11.1 Kinetic Air Valve Flanged Type - PN -1 11.1.1 3) 80 mm.

Item no.12. Rebate for the old dismantled MS pipeline of dia 675 mm (15 mtr )& CI pipeline of 300 mm dia (250 mtr)

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