SPECIAL REPAIRS REPLACEMENT OF EXTERNAL WATER SUPPLY PIPELINE AND CONNECTED ITEMS AT NORA AREA AND TECHNICAL AREA OF INS RAJALI ARAKKONAM

Amount

Excavation in trenches not exceeding 1.5mtr wide & not exceeding 1.5 mtr deep getting out in soft /loose soil manually for taking up/laying DI/CI/GI pipe all as specified and directed by Engr-in-charge

Returning , filling in trenches (Soft/Loose soil) in layers not exceeding 25 cm thick after laying of pipe including spreading, levelling & well ramming including watering as required all as specified and directed by Engr-in-charge

Removing surplus excavated soil to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 mtr above from the starting point all as specified and directed byEngr-in-charge

Taking up cast iron water mains (including all fittings), with spigot and socket ends and lead joints including burning out joints and recovering lead complete

(a) 100 mm dia bore

(b) 150 mm dia bore

(c) 200 mm dia bore

Supply and lay pipe ductile Iron , S/S including specials, Class “K-9” with spigot ends, centrifugally cast suitable for rubber/ lead joint for the following sizes complete all as specified and directed. Note: The above rate is inclusive of the following points (i) Pipeline Markers are to be provided whereever there is change in direction of pipe, road crossing etc., as specified by Engr-in-charge (ii) Pipeline should be securely anchored at dead ends, tees, bends, tapers and valves to resist thrust arising from internal pressure. Anchors and thrust blocks should be designed in accordance with IS : 5330-1984.

(a) 100 mm dia bore

(b) 150 mm dia bore

(c) 200 mm dia bore

M&L for PCC 1:2:4 type B2 using 40 mm graded aggregate as in filling and making good distrubed surface (Road crossing, Plinth Protection etc.,) all as specified and directed by the Engineer-in-charge

S&F sluice valve CI body ISI marked class PN 1.6 heavy duty flanged ends cast iron wheel with SS spindle (ISI marked) conforming to IS : 14786 – 2000, short body all as specified including nuts ,bolt, washers and gasket taking down the existing one,all as directed by Engineer-in Charge. Note: Quoted rate deemed to include making good the damaged valve chamber.

(a) 100 mm dia bore

(b) 150 mm dia bore

(c) 200 mm dia bore

M&L for brick masonary valve chamber of size 1.2mx1.2mx0.9m (internal size) by providing PCC 1:4:8 type D2 foundation 100 mm thick, brick work with CM 1:4and (10mm thick) plastering in CM 1:4 internal surfaces ,external surfaces upto 150mm below GL, 75mm thick PCC 1:2:4 type B as in coping valve chamber cover made up of 40x40x5mm thick angle iron frame and 3.15 mm thick MS sheet cover complete with lockeing arrangement and handle including painting steel surfaces with two coats of enamel paint over a coat of red oxide primer including dismantling the existing damaged valve chamber and removing debris away from the premises etc complete

Supply and fix CI Bends, Tapers, Tee pieces (single & double branch) any type and angle/radius and straight connecting pieces one end flanged and other socket or spigot, all ends flanged, flanged socket or spigot or any other type of fittings upto the size of 200mm

Supply and lay 3-layer PP-R Polypropylene random copolymer) pipes SDR 7.4 & SDR 11 UV stablised and antimicrobial welded having thermal stability for hot & cold watersupply including all PP-R plain & brass threaded polypropylen random fittings fixed complete .with all fittings specials such as flange, bend, elbows,tees, short pieces connection, back nuts, diminishig pieces, caps, plugs and unions etc laid in trenches of size 63 mm bore.

rc enterprises (BID ID -3200073)