Improvement and Augmentation of Water Supply System by way of creation of Manifold, Upliftment of Valves and plugging of leakage at 20000 gallons OHT Logate near railway line under District Capex

Earth work in excavation by manual means in trenches for foundations, drains, pipes, cables etc. (not exceeding 1.5 m in width) and for shafts, wells, cesspits and the like not exceeding 10 sqm on plan, including dressing of sides andramming of bottoms lift upto 1.5 m, including getting out excavated earth and disposal of surplus excavatedearth as directed: All kinds of soil.

Providing and laying in position cement concrete of 1:4:8 mix (1 cement 4 coarse sand 8 graded stone agg. 40 mm nominal size) excl. cost of centring and shuttering all work up to plinth level (using crushed stone agg.)

Cement concrete flooring 1:2:4 (1cement: 2 coarse sand: 4 graded stone aggregate) finished with a floating coat of neat cement including cement slurry and curing complete, but excluding the cost of nosing of steps etc. complete. 50 mm thick with 20mm nominal size stone aggregate

Providing and applying crystalline mortar by mixing in the ratio of 4.5 : 1 (4.5 parts crystalline mortar : 1 part water) for the treatment of faulty construction joints, cracks, tie rod holes and spalled &honeycombed surface of RCC underground structures like basement, water tanks, bridge deck etc. to ensure water tightness. The crystallie mortar shall conform to the EN 1504-3 having compressive strength Class R4 > 45 MPa and adhesive bond strength Class R3 > 1.5 MPa. The work shall be carried out all complete as per specification and the direction of the Engineer-In-Charge. The product performance shall carry guarantee for 10 years against any leakage. 23.23.1 For sealing cracks and faulty construction joints, routed out/making U-shape groove size 25x25mm and then primed the area with integral crystalline slurry @0.05kg/ running metre and while the surface is tacky filled the groove upto surface with crystalline mortar @1.50kg/ running metre. Once crystalline mortar is touch dry then finally applied two coats of integral crystalline slurry @0.05kg/running metre per coat.

Providing and laying in position cement concrete of specified grade including curing but excluding the cost of centering and shuttering. All work upto plinth level in 1:3:6 (1 cement: 3 coarse sand : 6 graded stone aggregate 20mm nominal size) (using crushed stone agg.)

Finishing walls with water proofing cement paint of required shade on new work (two or more coats) applied @ 3.84 Kg/10 Sqm

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20 cm in depth, consolidating each deposited layer by ramming and watering, lead upto 50 m and lift upto 1.5 m.

Dismantling G.I. pipes (external work) including excavation and refilling trenches after taking out the pipes, manually/by mechanical means including stacking of pipes within 50 meters lead as per direction of Engineer-in-charge : Above 40 mm nominal bore

Providing and fixing G.I. pipes complete with G.I. fittings excluding trenching and refilling etc.100mmφ(L)

Providing and fixing G.I. pipes complete with G.I. fittings excluding trenching and refilling etc.80mmφ(L)