Desilting and rejuvenation of 02 Nos. of raw water storage tank at RWSS 1 CYM and 2 NGM under Sub Division Rawatsar Rural.

Demolishing of Brick masonry including stacking of serviceable material and disposal of unserviceable material within 50 m lead. Brick masonry in cement mortar

015.3 Removing of mortar from bricks and stacking clean bricks 0015.3.2 Brick masonry in cement mortar

24.3 Brick work with modular bricks of class designation 75 in foundation and plinth in:24.3.2 Cement Mortar 1:6 (1 cement : 6 coarse sand)

Earth work in excavation over area ( for Sedimentation cum storage tank) Exceeding 30 cm in depth 1.5 Mtrs in width as well as 10 Sqm on plan) including disposal of excavated earth lead up to 50M and all lift. Disposed earth to be levelled and neatly dressed including stacking of useful material if any available during excavation for all kind of soil. Earth work to be carried out by means of mechanical system i.e. Tractor craw or any other mechanical system. No extra payment shall be done for lift of any limit. This work also involves dressing of sides and bottom for lining purpose which is to be done manually, slope of sides to be maintained as per specification. Work is to be done as per direction of engineer in charge

Silt clearance from Sedimentation cum storage tank with all lift and lead up to 50 Mtr. Silt to be disposed outside the Headworks boundaries. Disposed silt to be levelled and neatly dressed including stacking of useful material if any available during excavation for all kind of soil. Silt clearance is to be carried out by means of mechanical system i.e. Tractor craw/Trolley or any other mechanical system. No extra payment shall be done for lift . This work also involves dressing of bottom which is to be done manually and there shall be no damage to lining and LDPE film of tank. Work is to be done as per direction of Engineer In Charge and technical specifications.NOTE :- For additional lead, beyond 50M, every additional lead will be paid as per PWD BSR. But for lead of 500M, 1 km. and onward; initial rate of 50M will be deducted from concern rates of above said leads

Providing and Laying in position of Cement concrete Nominal mix (1:5:10) including leads of all construction materials, curing, compaction and finishing with rendering in cement sand mortar 1:3 (1 cement : 3 coarse sand) and making good the joints excluding the cost of centering, shuttering and reinforcement. Well graded crusher broken stone aggregate of maximum size upto 20 mm

12.3 Storage Tank SINGLE FLAT BRICK LINING WITH 250 MICRON LDPE FILM:- Preparing surface levelled and dressed to proper slope and laying over it on sand properly rammed and watered in 2 Layers of 5 cm each. Providing and laying 250 micron LDPE film as per ISS:2506-1984 including overlapping on the finished surface of compacted sand. Over LDPE film 15 mm thick cement sand mortar 1:3 shall be provided and laid which shall be cured properly. Over the base mortar single layer Ist class brick lining in cement sand mortar 1:3 shall be provided with joints not more than 8 mm wide and curing shall be done for 14 days. This also includes providing weedicides and anti-termite treatment, complete work as per technical specifications.

011.3 Cement plaster with cement sand mortar (1:4) including racking of joints, smooth finishing and curing etc.complete including all leads of all construction materails of thickness. 011.3.2 20mm thick in 2 coats.

2.4 Storage Tank Providing and fixing PVC float in Raw Water Storage tank with CI tail piece 150mm dia-2 Nos, CI puddle collar-150mm dia- 1.20 M- 1 No. and PVC hose pipe150mm dia -6 M and all accessories complete in all respect as per Instructions of Engineer In Charge. Complete Job