Anti-erosion measures at different reaches of river Kopilli on both bank under Kampur Revenue Circle.

Earth work in excavation of drainage channel by mechanical means to the proper grade and slopes as required including disposing the excavated debris/soil to a safe distance of minimum 50 m distance, etc. complete as directed. For lead upto 50 m and all lifts. Wet & Sticky Soil

Collection of broken stone metal of size 13 mm. to 38 mm in average free from dust, dirt and other foreign materials including local carriage and stacking in regular measurable stacks of approximate 1(one) m. height at quarry site, etc. complete as directed.

Collection of broken stone metal of size 20 mm to 40m in average from blasted rock free from dust, dirt and other foreign materials screening properly, stacking in suitable stacks at quarry site, etc. Complete as directed. (7.5% deduction will be made from the stack measured quantities on account of void).

Labour charge for making filter bed of required thickness with stone metal of size 13mm to 38 mm over the trimmed surface of river bank/ embankment , slope, including site carriage of metal within a distance of 150m etc. complete as directed. Without Boat

Collection of blasted boulder of size 23cm. to 30cm in average and minimum weight 30Kg having (i) specific gravity not less than 2.65, (ii) Aggregate Chrushing <30% (wearing) & < 45% (non wearing) (III) Impact Value(%) max <30% (wearing) & < 45% (non wearing)and (IV) Abrasion Value(%) <30% (wearing) & < 50% (non wearing)( Materials conforming to IS 2386 part III & IV 1963) and Free from dust, dirt and other foreign materials including local carriage and stacking in regular measurable stacks of approximate 1 (one) m. height at site, etc. complete as directed. (10% under sized (minimum 10 cm ) boulder is allowable for packing/filling the gaps occurred during execution of works). (15% deduction will be made from the stack measured quantities on account of void)

Labour charge for loose dumping boulder of 23cm. to 30cm. size in loose in eroded portion of river bank/ bed including handling charge and including site carriage of boulder from stack yard/ dump site within a distance of 150 m.etc. complete as directed. Without boat

Local carriage of boulder, metal, gravel/sand etc. from the approachable site beyond 150m and up to 3.00Km from the work site including loading from stack and unloading at work site with 10 (ten) ton capacity truck, supplying P.O.L. etc. complete as directed.

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

Supply of non-woven Geo-textile fabric sheets of 300 GSM manufactured from 100% virgin Polypropylene (PP) fibre with minimum properties as per IS 16653: 2017 (i) Wide Tensile strength (MD) ≥15KN/m & Wide Tensile strength (CD) ≥15KN/m (ii) Elongation (MD) ≥50% & Elongation (CD) ≥50% (iii) Abrasion ≥95% (iv) Trapezoidal Tear Strength (MD) ≥340 N & Trapezoidal Tear Strength (CD) ≥340 N (v) CBR Puncture strength ≥3000 N (vi) Permittivity ≥1.25 s-1 (vii)Permeability ≥60l/m2/sec (viii)AOS ≤75micron (ix)UV Resistance @500 hours retained Tensile strength (MD) & (CD) ≥80% (x) Mass ≥ 300gm/m² (xi)Thickness at 2KPa ≥3mm. (Each Roll of Geo Fabric Sheet should be supplied in properly packed Bundles and should be marked with the Name of Manufacturer, Batch Number & its dimensions clearly on each roll 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).

Labour charge for laying Geo fabric sheet as filter bellow pitching including carrying, lapping, wrapping & stitching as directed by the Engineer-in-Charge.