Immediate measures for restoration of Village Dahalapara from flood damages of river Dulani under S.D.R.F. for 2020-21

Amount

Clearing light jungles and trees upto 15 cm. Girth including cutting, uprooting roots and stumps, removing them from the site of the work, etc. complete as directed. ( When 30% of the area is covered by shrubs, trees etc.)

Supply of Geo-textile bags of type-A (1.03X0.70M) made of Geo-textile non-woven fabric sheets of 400 GSM manufactured from 100% virgin Polypropylene (PP) fibre having thickness not less than 3.00 mm with minimum properties as (i) Tensile strength (CD) ≥ 24 KN/m (ii) Tensile strength (MD) ≥ 22 KN/m (ii) Mass ≥ 400.00 Gm/m ² (iii) CBR Puncture strength ≥ 4100 N/m2 (iv) Elongation @ break (Warp) ≥ 54% (v) Elongation @ break (Weft)≥ 52% (vi) Abrasion ≥ 70 % (vii) UV Resistance @ 500 hours ≥ 70% (viii) AOS ≤ 75 micron (ix) Permittivity ≥ 1.25, (x) Trapezoidal Tear Strength ≤ 520 N (xi) Permeability = 45Lt/m2/sec (xii) Seam strength = 80 % of geotextiles strength . Stitching of Bags should be Ring Spun Yarn stitches with 2500-3000 denier double line chain stitch with overlap with stitches along the edge @ minimum 15 stitches per 100 mm. (Bags are to be supplied of 100 numbers or part in a bundle, properly packed with name of Manufacturer and Batch Number is to be marked on each bag with “WRD Govt of ASSAM” to be printed on each bag and mentioning properly the GSM and type of Geo bag polymer. Test Certificate from approved NABL accredited and ISO Certified Laboratory should invariably be submitted against each batch of material)

Supply of non-woven Geo-textile fabric sheets of 300 GSM manufactured from 100% virgin Polypropylene (PP) fibre with minimum properties as (i) Tensile strength ≥ 12 KN/m (ii) Mass ≥ 300.00 Gm/m ² (iii) CBR Puncture strength ≥ 3.5 KN (iv) Elongation at break ≥ 60% (v) Abrasion ≥ 70 % (vi) UV Resistance @ 500 hours ≥ 70% (vii) AOS ≤ 75 micron (ix) Permittivity ≥ 1.25, (x) Trapezoidal Tear Strength ≤ 340 N (xi) Permeability = 2.00 x 10 ̄ ³ m/sec (xii) Seam strength = 80 % of geotextiles strength . Stitching of Bags should be Ring Spun Yarn stitches with 2500-3000 denier double line chain stitch with overlap with stitches along the edge @ minimum 15 stitches per 100 mm. (Each Roll of Geo Fabric Sheet should be supplied in properly packed Bundles and should be marked with the Name of Manufacturer & Batch Number clearly on each bundle with “WRD Govt of ASSAM” to be printed on it and mentioning properly the GSM and type of polymer and Test Certificate from approved NABL accredited and ISO Certified Laboratory should invariably be submitted against each batch of material)

Supply of Galvd. Wire netting sheets made of 8G. Wire of 152mm (6”) squire mesh in sheet of overall size 2.57 x 1.66 m (5’ – 6” ) including 76mm projection of each wire on all sizes beyond the net of 2.42 x 1.50m ( including loading, unloading and stacking properly etc. Complete as directed. Tax extra).

Earthwork in bank trimming to the designed section /slope including removing the soils at a safe distance, complete as directed.

Supply of Sewing Thread/Yarn PPMF Stitching Thread (2000 Den. Kaplon) i/c payment of taxes

Filling and laying in cage with silt filled Geo bags of size 1.03m X 0.70m including excavation of specified silt from flood plain or adjacent chars within a distance of 90m of the work site, filling geo bags with silt having minimum weighing 126.00 Kg and minimum volume 0.084 cum after filling ,double locking chain stitching the mouth of the filled bags with polypropylene thread by power driven double needle machine, stacking the same in batches of 100, carrying the same to the dumping site including all handling charges and local carriage within a distance of 150m and laying properly. in cages made of wire netting sheets of size 2.57x1.66m of 8G galvanized wire making the cage from 2 nos. of wire netting sheet by tying the projected wires complete as directed. (GeoBag, Wire Netting Sheets and Polypropylene thread will be supplied by the department free of cost) Without Boat.

Labour charge for laying Geo fabric sheet as filter bellow pitching including anchoring and complete as directed.

Providing and laying of plain cement concrete slab of size 0.50m x 0.50m x 0.15m. made in proportion 1:2:4, having 4 Nos. of bottom corner keys of 10 cm. dia and 10 cm. long on trimmed graded slope of river bank including ramming the seat, curing, carriage of the slab from the place of casting to the work site up to a distance of 200m and all handling charges etc.

Supply of R.C.C Porcupine member of size 0.10x0.10x3.00m with cement concrete proportion 1:2:4 reinforced by 4nos of 8mm dia TMT bar. and 4mm dia (8G) wire stirrups at 15cm. c/c with 2(two) nos of holes of 20mm dia at 50 cm inside from both sides in the same face and in the other face of member another 2 (two ) nos of holes of size 20mm dia at 65 cm inside from both ends including properly curing for 28 days and supply at specified stack yard complete as directed.

Labour charge for launching of R.C.C Porcupine including carriage of R.C.C. porcupine members of size 0.10mx 0.10m x3.00m from the stack yard to the place of launching, erection of the porcupine with 6 (six) members properly. Supply & fitting/ fixing with 12mm dia, 25 Cm long M.S Nuts and bolts and launching the porcupine properly as directed. (Lead up to 150 m) (without boat.)

RWIRUP MUSHAHARY

SWRANG KHAKLARY