Immediate measures to Tengakhat bund on the R/B of river Buridehing up to Jokai R.F at 12th km Romaighat for 2019-20 (Package 1)

Amount

Clearing medium 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% to 60 % of the area is covered by shrubs,trees etc)

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 diamension made of Geotextile non-woven fabric sheets of 400 GSM manufactured from 100% virgin Polypropylene (PP) having thickness not less than 3.00mm 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 (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 ≤ 520N (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).up to Dibrugarh(462Km)

Supply of 9mm dia rope polypropylene gabion of size 2.00 x 2.00x 0.45 having rope weight of 42 gm per mts and mesh opening 150mm x 150mm with tensile strength of 1560kg and having minimum wight of 6.20kg per gabion. For Gauhati. (462Km from Gauhati to work site)

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)Up to Dibrugarh(462Km)

Supply of special Threads for geo bags to meet 4 raws of type 101 stitch on top/open end of bags after filling the materials and specification complete as directed.

Labour charge for laying Geo fabric sheet as filter bellow pitching.

Earth work in excavation by hydraulic excavator, to proper grade and slopes as required including utilizing the spoils for filling works in the vicinity including removing roots & vegetation, dressing to design section complete as directed.Ordinary Soil , For depth up to 3.00m

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 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. ( sand,Geo Bag and Polypropylene thread will be supplied by the department free of cost)(i)With 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 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 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.(Sand, Geo Bag , Wire Netting Sheets and Polypropylene thread will be supplied by the department free of cost)

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 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. ( sand,Geo Bag and Polypropylene thread will be supplied by the department free of cost)(i) Without Boat

Earth work in embankment by truck carriage in ordinary/normal soil excluding sandy and rocky soil free from roots & vegetation and filling in uniform layers not exceeding 22cm. thick including ploughing or roughening or benching the seats, removing all debries, breaking clods up to 2.5cm cube, dressing as per design section including payment of forest royalty if any, etc. complete as directed.(10% deduction will be made from the section measured quantities of the completed and compacted on account of shrinkage)For initial lead beyond ½ Km and up to 4.00 Km and for all lifts

Utpal Gogoi

AMRIT CHETIA

KISHUR-MANASH JV