Anti - Erosion measures along right bank of River Kollong at Bhuyanpatty and Khutikatia area

Amount

Item No.1 /1.2:- Clearing medium jungles and trees upto 50 cm girth includning cutting, uprooting roots & stumps, removing them from the site of work etc complete as directed.

Item No.2 :- Earthwork in excavation for foundation trenches of walls, retaining walls, footings of column, steps, septic tank etc. including refilling (return filling) the quantity as necessary after completion of work, breaking clods in return filling, dressing, watering and ramming etc. and removal of surplus earth with all lead and lifts as directed and specified in the following classification of soils including bailing out water where necessary as directed and specified. A) Up to a depth of 2.00m below the existing ground level. (a) In ordinary soil

Item No.3/4.01:- Collection and supply of broken stone boulder of size 23cm to 30cm (man size) including clearing all dust , dirt and other derbies from approved quarry including payment of forest royalty, sale tax etc. and carriage to work site from quarry and loading, unloading and stacking in regular measurable stacks at work site/stacking yard, complete as directed. Quarry:- Dhalpahar

Item No.4/11.1 :- 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). for FOR Guwahati

Item No.5/3.4.1:- Carriage of Geo-Bags from Ghy store to work site etc complete as directed. Distance from Gghy to site 130 Km Rate of one bag= 137 x 0.013= Rs 1.78

Item No.6/8.01A:- Filling and laying of Geo bags of size 1.03m X 0.70m excluding excavation of specified sand from flood plain or adjacent chars within a distance of 90m of the work site, filling geo bags with sand 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 double stitched machine, stacking the same in batches of 00,carrying the same to the dumping site including all handling charges and local carriage within a distance of 150m and laying properly as directed. (sand,Geo Bag and Polypropylene thread will be supplied by the department free of cost) With Boat

Item No.7/5.01:- Labour charge for dumping boulder in cage 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 ( wire netting sheet supplied by the department free of cost within 150m of work site) filling boulder inside in cage launching the same in position as directed including all handling charges and including site carriage of boulder from stack yard/ dump site within a distance of 150 m.etc. complete as directed. 5.01.1:- Without Boat

Item No.8/11.3:- 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) FOR GUWAHATI

Item No.9/3.09:- Carriage of Geo sheet of including loading & unloading , Stacking cost of P.O.L. ,etc. complete and including hire charge of truck with driver and handyman completed as directed.(Distance to be calculated with respect to FOR Guwahati) Distance from Ghy to site 170 Km Rate of one sqm= 137 x 0.013= Rs 1.78

Item No.10:- Supply of wire netting sheet of size made of 8 G wire 152 mm (6”) square mesh in sheets of overall size 2.57 x 1.66 m including 75 mm projection of each wire on all sides beyond the net size of 2.42 m x 1.5 m including loading, unloading, stacking properly, complete as directed.

Item No.11:- Supply of Sewing Thread/Yarn PPMF Stitching Thread (2000 Den. Kaplon) i/c payment of taxes.

Item No.12/8.06:- Labour charge for laying Geo fabric sheet as filter bellow pitching.

Item No.13:- Supply of Sand

Item No.14:- Preparation of stack yard of boulder/metal etc. including cutting light jungles and removing the same to a safe distance, leveling the ground , filling up depressions etc. complete as directed

REZWAN ANSARI