WBMAD/ULB/RSM/WS/30/26-27

Excavation of trial pit (3.0 m x 1.0 m x (upto) 3.0 m) for fixing of pumping main, washout line raking every detection against damage of S.W. pipe line electrical cable etc. as underground obstruction including 37.5 mm timber shuttering, earth cutting, dewatering, barricading and back filling etc. as per direction of E-I-C

Labour for picking up existing metalled road surface to a specified average depth, including screening and stacking the pavement materials. For average depth above 75 mm but not exceeding 150 mm by manual means: (i) Stone-metal surface.

Taking out C.I. / D.I. pipes with specials and valves including stacking the same within a lead of 30 M as per instruction of the Engineer-in charge, (Excavation, dewatering, earth filling etc. will be paid separately). a ) Pipe up to 150 mm diameter and depth of trench up to 2 Metre.

Dewatering by pumps including all leads, lifts and making all arrangements of disposal, where continuous flow of water from a source other than natural or ground water is encountered in case of emergency maintenance works related to leakage, breakage and making wet connections. [Note : - In case of any other situation demanding such emergency dewatering. use of this item is to be approved by the Superintending Engineer/Tender Accepting Authority. This item shall be executed on the specific direction duly supported by proper clarification of the E.I.C. who will be satisfied in absolute discretion that such work has not been necessitated due to any natural source of water or any fault of the Contractor]

Shifting house connection or stand post connection from existing main to new main after excavation through any kind of soil and road materials up to required depth. Dismantling existing ferrule with all fittings. Plugging hole of old main with G.I. plug. Drilling and tapping the new main. refixing the ferrule on the new main with serviceable old G.I pipes and other specials (New G.l. pipes and other specials, if required to be installed shall be paid extra) and back filling the trench with excavated materials all complete as per specification and direction of the Engineer- in-charge.

Earth work in excavation in trenches and pits for water supply line and appurtnant structure in all sorts of soil or loose materials(excluding laterite or sand stone)including removing,spreading or stacking the spoil within a lead of 75 meters complete as per instruction of E.I.C. Depth of excavation not exceeding 1500 mm. 478x0.60x1.0=286.8 (For Taking out) 478x0.60x0.850= 243.78 (For laying)

Earth work in filling in trenches and pits with good earth obtained from excavation of trenches and pits including consolidation by watering and ramming in layers not to exceeding 150 mm etc. complete as per instruction.

Removal of surplus soil and rubbish earth etc. from the working site and disposal of the same beyond the compound in conformity with the municipal rules for such disposal loading into truck and cleaning the site in all respect as per direction of E.I.C.

All types of Ductile Iron (D.I) Specials (viz. Bend, Tee, Taper, Tail piece etc), size conforming to I.S. Specification No. 9523/2000 with cement mortar lining (inside) and bituminous coating (outside). (25% of payment will be held up till successful hydraulic testing) a) All Socket Tee 100 mm to 300mm dia. 100X100 Tee = 2 NosX15Kg = 30 Kg 150X150 Tee = 2 NosX24Kg = 48 Kg

(b)Double socketed bend. 100 mm to 300mm dia.