(Nigam Nidhi) Maintance For CT/PT Urinals at Zone No 05. File No.06/26X4/8.

Brick work with well burnt chimney bricks in bulls patent trench kiln manufactured by ghol process,crushing strength not less than 40kg /sqcm and water absorption not more than 15% in foundation and plinth.Cement mortar 1:6( 1 cement: 6 coarse sand)

Providing and laying 60 mm thick factory made cement concrete interlocking paver block of M -30 grade made by block making machine ith strong vibratory compaction and of approved size and design/shape laid in required colour and pattern over and including 50 mm thick compacted bed of stone dust sand, filling the joints with coarse sand etc. all complete as per the direction of Engineer-in-charge.

Excavation of trench for laying of pipe for water harvesting at ground floor and refilling watering and ramming the average depth of trench is 0.65 meter.Excavation for 160mm

Providing & laying of P.V.C. pipe for roof top harvesting from roof slab to Ground floor including all fittings, jointing material with bypass arrangement with suitable valves P.V.C pipe 6kg/sqm(160mm)

Boring holes with Auger upto depth of 3.6 m for water harvesting system 200mm

Add for ever 50 cm depth where depth is more than 3.6 m 200mm dia

Providing PVC pipe slotted as per direction of Engineer-in-Charge and fixing in Rain water recharge pit/Percolation pit or Soakway with jute coir wrapping pipe.200mm dia

Providing and laying filter material as given below in recharge pit/ percolation pit or soak pit/ waste water treatment system. Course sand(1.5mm to 2.00mm)

Gravel/pebbles(5 to 25mm)

brickbats