Provision for Rain Harvesting Pits at Various Location In Overhaul Division HAL-BC

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DECLARATION I

DECLARATION II

Specification

Earth work in excavation in all type of soils by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) for re-charge pits including getting out and disposal of excavated earth lead upto 50 m and for all as directed by Engineer-incharge

Removal of excess earth outside the HAL premises upto lead of 10km

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

Supplying and fixing of in position RCC ring of dia 3 feet wide ,2"wall thickness and 8 to 10 inch depth having holes of required size , to be palced in rain water harvesting pit to a required depth etc all complete as directed by EIC/OIC.Rate is inlcusive of GST 18%

Providing and laying cement concrete(1:2:4-1 Cement : 2 coarse sand (zone-III) including manufactured sand derived from Recycled Concrete Aggregate (RCA) upto 25% : 4 graded stone aggregate 20 mm nominal size including Recycled Concrete Aggregate (RCA) upto 25%) in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor etc., up to floor five level, excluding the cost of centering, shuttering and finishing

Providing and Laying in position cement concrete of specified grade excluding the cost of centering and shuttering -All works up to plinth level.1:4:8 (1 cement:4 coarse sand derived from natural souces :8 graded stone aggregates 40mm nominal size derived from natural sources)

Providing Steel reinforcement TMT bars of Fe 500 grade for R.C.C. work including straightening, cutting,bending, placing in position and binding all complete upto plinth level including handling hooks etc., all complete.

Centering and shuttering inlcuding strutting,propping etc and removal of form for Suspended floors,roofs,landing,balconies and access platform

Providing and laying factory made Precast concrete solid blocks of 200mm thickness of grade M10 maded of C& D waste from approved manufacturer in foundation and plinth in cement mortart 1:6

Providing and laying plaster mix 1: 6 ( 1 cement : 6 coarse sand) of 15mm thick plaster on the rough side of single or half brick wall

Steel work welded in built up sections/framed work,inlcuding cutting,hoisting,fixing in position and applying a priming coat of approved steel primer using structural steel etc as required.In gratings,frames,guard bar,ladder,railing ,brackets,gates and similar work (For Pit mainatenance chamber)

Supplying, filling, spreading & leveling stone boulders of size range 5 cm to 20 cm, in recharge pit, in the required thickness, for all leads & lifts, all complete as per direction of Engineer-in-charge.

Supplying ,filling ,spreading and levelling of coarse sand of size 1.5mm to 2mm in recharge pit surrounding areas over laid boulders at top for thickness of 50mm for all leads and lifts all complte as per direction of EIC.

Demolishing cement concrete of nominal 1:3:6 or richer mix manually/by mechanical means including disposal of material within 50 metres lead as per direction of engineer in charge

Providing and Fixing on wall surface 160mm dia PVC pipes(self fit socket ) (SWR ) along with fittings , including fixing the pipe with clamps at 1.0m spacing to withstand a pressure of 6kgf/sqm complying with IS 4985 of approved manufacturer jointed with chemical solution all complete as directed by EIC/OIC.160mm dia PVC pipe for rain water

Providing and fixing on wall face unplasticised - PVC moulded fittings/ accessories for unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion.

Bend or elbow

Providing and Fixing UV stabalized fiberglass reinforced plastic sheet roofing up to any pitch inlcuding fixing with polymer coated J or L hooks,bolts and nuts 8mm dia GI plain/bitumen washers complete but excluding cost of purlins,rafters,trusses etc.The sheet shall be manufcatured out of 2400 TEX panel rovigs incorporating minimum 0.3% ultra voilet stabaliser in resin system under approximately 2400psi and hot cured.They shall be of uniform pigmentation and thickness without air pockets .The sheet shall be opaque or transluent,clear or pigmented ,textured or smooth as speciified.2mm thick corrugated