Immediate measures to restore the R/B of Kollong river from Phulaguri to Mulankata and Raha to Chaparmukh at Mulankata area under SDRF for 2020-21

Amount

Earth work in bank trimming to the designed section/slope including removing the soils at safe distanceand complete as directed.

Earth work in excavation by hydraulic excavator,to proper grade and slopes as required including utilizing the spoils for filling works in the vicinty including cutting and clearing light jungles trees upto 50 cm,girth from the site of work,removing roots & vegetation,dressing to design section complete as directed. Ordinary Soil. For depth up to 3.00m

Collection of stacking river pea-gravel of size 6mm to 20mm in average free from dust,dirt and other foreign materials including necessary carriage and stacking in regular measurable stacks at quarry site, payment of forest royalty ,monopoly, etc. Complete as directed

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

Labour charge for making filter bed of required thickness with stone metal of size 13mm to 38mm over the trimmed surface of river bank/embankment., slope, including site carriage of metal within a distance of 150m etc. complete as directed

Collection of blasted boulder of size 23cm. to 30cm in average and minimum weight 30 kg having (i) specificgravity not less than 2.65 and Materials properties of conforming to IS2386 III & IV1963 and Free from dust,dirt and other forgen materals including local carriage and stacking in regular measurable stacks of approximate 1(one) m. height at site, payment of forest royalty, etc. complete as directed(10% under sized boulder is allowable for paking/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 150m etc. complete as directed Without boat

Local carriage of boulder,metal,gravel etc.from the approachable site beyond 150mand 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

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.

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

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) For 130 km

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 Resistanceb @ 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 . Stitchingof 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).

Carriage of Geo Bags of size 1.03 x 0.70 m 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) For 130km

Collection and supply of sand from approved quarry of specified grade by truck carraige free from debries and other foreign material including payment of forest royelty /sales tax etc.(For initial Lead beyond 1/2 Km and upto 4.00 km for all lifts.)

Filling and laying of Geo bags of size 1.03m X 0.70m excluding 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 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) With Boat.

Filling and laying of 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 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. (Geo Bag and Polypropylene thread will be supplied by the department free of cost) Without boat

Supply of Galvd wire netting sheet made of 8G wire 152mm sqaure mesh of over all size 2.57 x 1.66m including 76mm projection of each wire in all sides beyond the net size 2.42m x 1.5m including loading and unloading stacking properly complete as directed.

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

Preparation of stack yard of site materials including cutting light jungles and removing the same to safe distance leveling the ground where necessary by ramming properly of earth complete as directed.

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

Supply of Pre-stressed Cement Concrete(PSC )Porcupine members of size 0.10mX0.10mX3.00m with M40 grade of cement concrete with graded broken course aggregates upto 12mm size down and reinforced with 4Nos. of4mm dia high tensile steel wire cable at four corners with necessary cover and 4 mm high tensile stirrups at 250 mm C/C, in conformity with IS6403 and stress edtore quired strength note xceeding 9.18N/mm ,holes of16mm dia at 50cm inside from both ends in the same face and in either face of post another 2 Nos. of holes of size 16mm dia at 65mm in side from both ends including properly curing for 14(fourteen)day sand carriage of porcupine members from factory to the departmental stack yard with in a distance up to 100 Km complete as directed.

Local Carriage of Porcupine members by Diesel truck of 10 MT capacity including loading at stack yard and un loading at river bank up to an average lead of 10.00 Km and all lift, 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 boat

Construction of temporrary shed of two roof with mud plinth of 0.45 m height above ground level with Bhaluka bamboo post 1.5 m apart driven at atleast 0.75 m below ground and height above plint 2.5m. Split Jatti bamboo wall mud plastering white washing 2 coats, 10 cm thick touch roofing over bamboo rua frame pplacing at 0.15 m clear apart fitted with bamboo kamies from binding doors and windows with Bamboo Chattai strengthening with Bamboo frame binding with wire etc compple as directed. (Using Bhaluka Bamboo at the rate of 6.00 nos/ Rm & Jati Bamboo at the rate of 61.00nos / Rm)