Installation of Surface Water Catchment System with the installation of Geotextile and Geomembrane at Shyamsundarpur UG of Banklola Area.

Amount

Item Description/ Heading

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.

Surface dressing of the ground including removing vegetation and in-equalities not exceeding 15 cm deep and disposal of rubbish, lead up to 50 m and lift up to 1.5 m.

Material for preparation of pit base (gravels/stone chips /River sand)

Backfilling of Excavated Soil

Disposal of soil from the site

Supply of long fiber Geotextile of weight 400gsm/sqm, type tested as per relevant international standards for tear, tensile strength, elongation %, puncture and percolation parameters, to act as a filter medium, including overlapping at joints and welding with extrusion welder etc. complete as per approved design

Providing in position recycled co?polymer modular Rain water harvesting structure with required number of large plate (685*410 mm, weight not less than 850 Gram ) and small plate (430*410 mm, weight not less than 535 Gram) with +-1% so as to ensure 96 % void volume ratio fixed in arrangements as per specified pattern/design. Four Plate (Small) configurations. Material used is 100% recycled co-polymer. Design of the modules (Large and small plates) is based on water molecule Structure.

Supply of FRP filters de-silting suspended solid catcher and strainers including bucket of SS 304 grade with long fiber foam,filtration capacity 80 kiloliters per hour.(Including Riser 500MM )

Desilting Chamber?2 Mtr*1.5 Mtr*1.0Mtr

Supply of HDPE liner 1.00 MM Thickness

Crompton (4W10RA2C-50) or equivalent 2 HP 10 Stage 4 inch water filled Borewell Submersible pump with 1 year warranty

Providing and fixing on wall face 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,

Assembling & Installation of Modular Rain Water Harvesting Structure with wrapping of Double layer Geotextile & Liner outside the Modular Tank and Connections of Filter.

Borehole (2 nos)-15 m each including shedule 80 PVC casing

Total impact of GST for the purpose of CTC