Restoration of damage due to flood of river Buridehing along the R/B at Borphakial gaon under SDRF for 2019-20 (Package 1)

Amount

Clearing medium jungles and trees upto 15cm girth including cutting, uprooting roots & stumps, removing them from the site of the work etc. complete as directed. (when 30% to 60% of the area is covered by shrubs, trees etc )

Uprooting bamboo clumps where bamboo already removed including removing stumps to a distance as directed.

Cutting bamboo clumps, uprooting roots & stumps including removing them from the site of work, etc. complete as directed.

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

Supply of Geo-textile bags of type-A (1.03X0.70M) inner dimension 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). (F.O.R Guwahati)

Carriage of Geo bag of size 1.03mx0.70m to work site from Guwahati including loading , unloading and stacking ,cost of P.O.L etc. including hire charge of truck with driver and handyman complete as directed.(Distance with respect to FOR Guwahati) .

Supply of Geo Bags Type-B (Size 2.00m x 1.50m) inner dimension made of composite layers of geo- textile as per specifications below : Woven Geo-textile for the outer cover. The woven geo textile is woven with UV resistant slit film tape fibre with MAVR values of the following properties. Geo-textile used to manufacture geo-textile bags should have high mechanical properties for enhanced durability along with enhanced puncture, abrasion and U.V. resistance characteristics. Geo-textile should be inert to biological degradation and resistant to naturally encountered chemicals, alkalis, and acids.  Weight (ISO-9864/ASTMD 5261) ≥250 Gms/Sqm.  Tensile strength(MD) ( ASTMD 4595) = ≥35 kN/m  Tensile strength(CD) ( ASTMD 4595) = ≥35 kN/m  Tensile Elongation ( ASTMD 4595)= ≥5% & ≤30%  Grab Elongation ( ASTMD 4632)= ≥5% & ≤30%  Tensile strength ( ASTMD 4632) = 1.5 KN  UV resistance( ASTMD 4355) = 70%/500 hrs Non woven Geo-textile for the inner layer It is needle punched non woven geo-textile made of 100% polypropylene staple fibers which are formed into a random network for dimensional stability. It should resist UV degradation, rotting and alkalis.  Weight (ISO-9864/ASTMD 5261) ≥300 Gms/Sqm.  Tensile strength(MD) ( ASTMD 4595) = ≥12 kN/m  Tensile strength(CD) ( ASTMD 4595) = ≥12 kN/m  Tensile Elongation ( ASTMD 4595)= ≥5% & ≤30%  Grab Elongation ( ASTMD 4632)= ≥5% & ≤30%  Tensile strength ( ASTMD 4632) = 1.5 KN  UV resistance( ASTMD 4355) = 70%/500 hrs (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).(F.O.R Guwahati)

Carriage of Geo bag of size 2.0mx1.50m to work site from Guwahati including loading , unloading and stacking ,cost of P.O.L etc. including hire charge of truck with driver and handyman complete as directed.(Distance with respect to FOR Guwahati) .

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)(F.O.R :Guwahati)

Carriage of 300 gsm 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)

Supply of 9 mm dia. Rope polypropylene gabion of size 2m x 2m x 0.45 m having rope weight of 42 gm/m and mesh opening 150 mm x 150 mm with tensile strength of 1560 kg and having minimum weight of 6.20 kg per gabion. FOR Guwahati

Carriage of Gabion box of size 2.0mx2.0mx0.45m including loading & unloading, 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)

Supply of sewing thread/yarn PPMF stiching thread (2000 Den.Kaplan) i/c payment of taxes.

Collection and supply of sand from sand chor of river bed free from dust and any other foreign materials including necessary carriage, loading unloading, stacking in regular measurable stacks at the site of work including payment of forest royalty, sale tax etc. complete as directed.

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

Filling and laying of Geo bags of size 1.03m X 0.70m including excavation of specified sand from flood plain or adjacent chars within a distance of 90m of the work site, filling geo bags with sand weighing 126.00 Kg after filling ,stitching the mouth of the filled bags with polypropylene or polyester 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 as directed. (Geo Bag and Polypropylene/polyester thread will be supplied by the department free of cost) A) With Boat

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 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 double stitched 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 as directed. (Silt, Geo Bag and Polypropylene thread will be supplied by the department free of cost) B) Without Boat

Filling and laying of polypropylene gabion boxes filled with sand filled Geo bags of size 2.0m X 2.0m X 0.45m including excavation of sand from flood plain or adjacent chars within a distance of 90m of the work site, filling geo bags with sand weighing 126.00 Kg after filling ,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.(Geo Bag , Wire Netting Sheets and Polypropylene thread will be supplied by the department free of cost) B) Without Boat

Earth work in excavation of drainage channel to the proper grade and slopes as required including desposing theexcavated debris/soil to a safe distanceof minium 50m distance as directed.

Filling and laying of nonwoven Geo-textile bag of dimension 2.00mx1.50m including excavation of specified sand from flood plain or adjacent chars within a distance of 90m of the work site, filling geo bags with silt ,stitching the mouth of the filled bags with polypropylene thread by power driven double needle machine, laying at proper site including all handling charges and local carriage within a distance of 100m complete as directed. (Geo Bag and Polypropylene thread will be supplied by the department free of cost) A) With Boat

Hire charge of engine boat with minimum 10HP engine and loaded carrying capacity of not less then 3.00 ton along with operator and halpers excluding cost P.O.L. For supervised the works during execution period for four month.

SRI SUDIP KUMAR DAS

BOLIN DOWERAH