Immediate measures for restoration of flood damages at village Paroura of the river Gaurang under SDRF for 2021-22

Amount

Earth work in bank trimming to the design section/ Slope including removing the spoils and depositing In bank/toe of embkt. As directed by the deptt. Including clearing light jungles debries and otherForeign materials with all lead and lifts Completed as directed.

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 thicknessnot less than 3.00 mm with minimum properties as (i) Tensile strength (CD) ≥ 24 KN/m (ii)Tensile strength (MD) ≥ 22 KN/m (iii) Mass ≥ 400.00 Gm/m ² (iv) CBR Puncture strength ≥4100 N/m2 (v) Elongation @ break (Warp) ≥ 54% (vi) Elongation @ break (Weft)≥ 52% (vii)Abrasion ≥ 70 % (viii) UV Resistance @ 500 hours ≥ 70% (x i) AOS ≤ 75 micron (x)Permittivity ≥ 1.25, (xi) Trapezoidal Tear Strength ≤ 520 N (xii) Permeability = 45Lt/m2/sec (xiii) Seam strength = 80 % of geotextiles strength . Stitching of Bags should be Ring Spun Yarnstitches with 2500-3000 denier double line chain stitch with overlap with stitches along theedge @ minimum 15 stitches per 100 mm.(Bags are to be supplied of 100 numbers or part in a bundle, properly packed with name ofManufacturer 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. TestCertificate from approved NABL accredited and ISO Certified Laboratory should invariably besubmitted against each batch of material).FOR GUWAHATI

Supply of Galvd. Wire netting sheets made of 8G wire of 152mm (6”) squire mesh in sheet of overall size 2.57x1.66(8’-6”)x(5’-6”) including 76mm projection of each wire on all sizes beyond the net size of 2.42m x 1.50m(including loading, unloading and stacking properly etc. complet as directed.(Tax extra).

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 ̄ ³m/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 stitchesalong 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) FOR GUWAHATI

Supply of polypropylene 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 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. (Silt, Geo Bag , Wire Netting Sheets and Polypropylene thread will be supplied by the department free of cost)

Labour charge for laying Geo fabric sheet as filter bellow pitching

Providing cast in situ plain cement concrete slab of size 0.50m X 0.50mX 0.15m, made in proportion 1:2:4 on trimmed graded slope of river bank including ramming the seat, curing etc. complete as directed.

Supply of R.C.C. Porcupine member of size 0.10m × 0.10m × 3.00m with cement concrete proportion 1 :2:4, reinforced by 4 Nos. 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 stackyard complete as directed.

Labour charge for launching of R.C.C. / PSC Porcupine including carriage of R.C.C./ PSC porcupine members of size 0.10m × 0.10m × 3.00m from the stack yard to the place of launching ,erection of the Porcupine with 6 (six) members properly, supply & fitting/fixing with 12 mm dia 25 Cm long M.S. Nuts and bolts and launching the porcupine properly as directed. (Lead up to 150 m) Without bord.

BIRKHANG BASUMATARY

RWIRUP MUSHAHARY

M/S STAR CONSTRUCTIONS

UJJALA SHARMA

SUDHANG KUMAR BRAHMA

SRI BICHITRA BASUMATARY