Construction of Rain Water Harvesting Structure in Dak wala Choe/ Dhari wala Nallah at Village Gharwasda, ward No 4, GP Thara under APO, IDP, Thanakalan Distt Una, during 2021-22

Amount

Excavation in foundation trenches etc. in earth work lift up to 1.50 mtrs stacking the excavated soil not more than 3.0 mtrs clear from the edge of the excavation and then returning the stacked soil in 15cm layer. When required into plinth sides of foundation etc. consolidating each deposited layers by ramming and watering and then depositing of all surplus excavated earth as directed with in a lead of 20 mtrs

Banking excavated earth in layers not exceeding 20 cm in depth, breaking clods, watering, rolling each layer with ½ tonne roller, or wooden or steel rammers, and rolling every 3rd and top-most layer with power roller of minimum 8 tonnes and dressing up, in embankments for roads, flood banks, marginal banks, and guide banks etc. in all kind of soil. a. Deduct for not rolling with power roller of minimum 8 tonnes for banking excavated earth in layers not exceeding 20 cm in depth @ Rs. 4.05/m³ (as per HPSR 2020)

Providing & laying of cement concrete 1:3:6 (1 Cem:3 Sand:6 Agg.), Agg. 20mm nominal size

Providing & laying of cement concrete 1:2:4 (1 Cem:2 Sand:4 Agg) Agg. 20mm nominal size i/c curing complete.

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete

Centering and shuttering including strutting, propping etc. and removal of form work for Retaining walls, return walls, walls (any thickness) including attached pilasters, buttresses, plinth and string courses fillets, kerbs and steps etc.

Providing & making Gabion structure with Mechanically Woven Double Twisted Hexagonal Shaped Wire mesh Gabion Boxes as per IS 16014:2012,MORTH Clause 2500, of required size, Mesh Type 10x12 (D=100 mm with tolerance of ± 2%) Zinc coated, Mesh wire diameter 3.0 mm, mechanically edged/selvedged with partitions at every 1m interval and shall have minimum 10 numbers of openings per meter of mesh perpendicular to twist, tying with lacing wire of diameter 2.2mm, supplied @3% by weight of Gabion boxes, filled with boulders with least dimension of 200 mm, as per drawing, all complete as per direction of Engineer-in-charge.

Proving & laying G.I. pipe 150 mm dia (medium class i/c fixing with flanges & nut-bolt) complete with all accessories for drainage out.

Providing and fixing of C.I. Sluice valve 150 mm dia with all accessories i/c flanges & nut-bolt, gasket sheet ISI mark with brass spindles PH 1.6 etc.

Ashwani Kumar