Name of Work:- Construction of recharge shaft at new colony
Sl. No.
Item Description
1
Earth work in excavation in foundation, trenches etc. ncluding dressing of sides and ramming of bottoms, including getting out the excavated material, refilling after laying pipe/ foundation and disposal of surplus excavated material at a lead upto 50m suitable site as per direction of Engineer for following depths, below natural ground / Road top level. In all types soils/ saturated soil such as moorum, sand, sandy silt, clay, black cotton soil, kankar, etc. Depth upto 1.5 m
2
Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering - All work upto plinth level : 1:3:6 (1 Cement : 3 fine/ coarse sand : 6 graded stone aggregate 40 mm nominal size).
3
Random rubble masonry with hard stone in foundation and plinth : Cement mortar 1:4 (1 cement : 4 coarse sand)
4
Fine dressed stone flooring over 20 mm (average) thick base of cement mortar 1:4 ( 1cement : 4 coarse sand) with joints finished flush. Red Sand stone size not less than 1350 Cm2, c) 75mm
5
Coarse graded Granular sub-base Material 53 mm to 26 .5mm
6
Coarse graded Granular sub-base Material 26.5 mm to 4.75 mm
7
Coarse graded Granular sub-base Material 9.5 mm to 4.75 mm
8
Coarse sand
9
Construction of tube-well from ground levels to accommodate housing and assembly pipe of following sizes in all types of alluvium strata by percussion/ rotary drilling method and with gravel as per IS:4097-1967 and packing as per IS:2800 (Part I -& II) 1979 as amended upto date (the work includes the cost of gravel & its primary packing and packing during development, lowering of housing & strainer assembly pipes, with supply and wrapping of coir-rope, wherever necessary for arresting fine sand particles. The work will not include cost of housing pipe and strainer pipe assembly and development work, but work would be completed after obtaining sand free water). Upto 100 Meter depth Nominal bore 250 mm dia
10
Supply of ERW M.S. black casing pipe ISI marked (IS: 4270/1992) of grade Fe410 of following nominal bore sizes at site of work 250 mm dia
11
Supply of strainer pipes made of ERW M.S. black pipe ISI mark of following sizes at the site of work including required size of slotting as per IS:8110-1985 of following nominal bore sizes at site of work 250 mm dia
12
Testing verticality of tube-well by plumbing system and yield test and draw down test by pumping system as per IS: 2800 (Part II) 1979. Please Enable Macros to View BoQ information
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