Constructing rain water harvesting structure of Sinchai Bhawan, Panchkula.

Amount

Earth work in excavation 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) including getting out and disposal of excavated earth lead upto 50 m and lift upto 1.5m, as directed by Engineer-in-charge.

Providing and laying in position cement concrete of grade 1:3:6 (1 cement: 3 Coarse sand : 6 graded stone aggregate 20mm nominal size)

Brick work with common burnt clay non modular bricks of class designation 7.5 in foundation and plinth in cement mortar 1:4 (1 cement : 4 coarse sand)

To evaluate the required sub soil strata and water table in the fields.

Boring/drilling bore well of 300 mm dia. for casing/strainer pipe, by suitable method prescribed in IS:2800 (part 1) including collecting samples from different strata, preparing and submitting strata chart/bore log, including hire and running charges of all equipment tools, plants and machineries required for the job, all complete as per direction of Engineer-In- charge for all depth below ground level. (a) All type of Soil (i) 300 mm dia

(b) Rocky strata including boulders (i) 300 mm dia

Supplying, assembling, lowering and fixing in vertical position in bore well unplasticized PVC medium well Screen (RMS) pipes with ribs, of 200 mm nominal size dia , conforming to IS:12818, including hire and labour charges, fitting and accessories etc, all complete, for all depths, as per directions of Engineer-In- charge.

Supplying, assembling, lowering and fixing in vertical position in bore well, Unplasticised PVC medium well casing (CM) pipe of 200 mm nominal size dia, conforming to IS: 12818, including required hire and labour charges, fittings & accessories etc. all complete, for all depths, as per direction of Engineer -in-charge

Supplying filling spreading and leveling course sand of size range 1.5mm to 2mm in recharge pit in the required thickness over gravel layer, for all leads and lifts all complete as per direction of Engineer-In- charge. (1st layer)

Gravel packing in tube well construction in accordance with IS:4097, including providing gravel fine/ medium/ coarse, in required grading & sizes as per actual requirement, all complete as per direction of Engineer-in-charge.

Supplying, filling, spreading & levelling stone boulders of size 5 mm to 10 mm, in recharge pit, in the required thickness, for all leads & lifts, all complete as per direction of Engineer-In- charge. (2nd layer)

Charcoal Layer (3rd layer)

Supplying, filling, spreading & levelling stone boulders of size 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. (4th layer)

12mm cement plaster of mix 1:3 (1cement : 3 fine sand)

Providing and fixing Bail plug/bottom plug of 200mm dia to the bottom of pipe assembly of tubewell as per IS:2800 (part I)

Providing and fixing PVC perforated pipe 75 mm dia fitting and accessories etc. all complete for all depths as direction of EIC

Development of tube well in accordance with IS:2800 (part I) and IS: 11189 to establish maximum rate of usable water yield without sand content (beyond permissible limit) with required capacity air compressor, running the compressor for required time till well is fully developed, measuring yield of well by “V” notch method or any other approved method, measuring static level & draw down etc. by step draw down method, collecting water samples & getting tested in approved laboratory, i/c disinfection of tube well, all complete, including hire and labour charges of air compressor, tools and accessories etc all as per requirement and direction of Engineer-In- charge.

Providing and fixing M.S. grills of required pattern in frames of windows etc. with M.S. flats, square or round bars etc. including priming coat with approved steel primer all complete.

The lump sum charges has been taken for repair/shifting/dismantling of miscellaneous items i.e. parking shed, light poles, underground pipe lines, manholes, trees, pavement etc. as per site conditions. (to be done departmentally)

V.K. Mangla