Immediate measures to restoration work at village Bhebla on L/B of river Kaldia under SDRF for the year 2021-22

Amount

Earth work in bank trimming to the designed section/ slope including removing the soils and depositing on bank/ toe of the embankment as directed by the deptt. including clearing light jungles, debrices and other foreign materials etc. with all lead and lift complete as directed.

Supply of Geo-textile bags of 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).FOR GUWAHATI

Supply of Sewing Thread/Yarn PPMF stitching Thread (2000 Den ) Kaplon including payment of taxes.( Inclusive of labour cess 1%)

Supply of Geo textile bags of Type –A (1.03x0.70 m) made of Geo textiles 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 ≥24 KN/M (ii) Tensile strength (MD) ≥ 22 kn/m (iii) Mass ≥ 400.00 Gm/sqm (iv) CBR Puncture strength ≥4100 N/sqm (v)Elongation @break (Warp) ≥ 54% (vi)Elongation @break (Weft) ≥ 52% (vii) Abrasion ≥ 70% (viii) UV Resistance @ 500 hours ≥ 70% (ix) AOS not Less than 75 micron (x) Permittivity ≥ 1.25 (xi)Trapezoidal Tears Strength not less than 520 N Xii) Permeability = 45 ltr /sqm/sec (xiii)Seam strength = 80% of Geo textile 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 GSM and type of Geo bag polymer . Test Certificate from approved NABL accredited and ISO Certified Laboratory should inverbly be submitted against each batch of material ).

Carriage of Geo bag of size 1.03x 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 from Guwahati toJallah =130.00Km.)

Carriage of Geo bag of size 2.00x 1.50m 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 from Guwahati to Jallah =130.00Km.)

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

Carriage of Geo-sheets (From Guwahati to work site)including loading and unloading cost POL etc. complete and including hire charge of truck with driver and handiman for 300Km and above Km (Distance from Guwahati to Jallah =130.00Km.)

Excavation of roadway in soil with hydraulic excavator 0.90 cum bucket capacity including cutting and loading in tippers ,trimming bottom and side slopes ,in accordance with requirements of lines ,grades and cross section and transporting to the embankment location with a lift up to 1.50 m and lead upto 1000 m as per Technical Specification clause 302.3

Labour charge for laying of Geo-fabric sheet as filter below pitching including anchoring and complete as directed

Construction and supply of Wire-netting box of size 1.50mx 1.50mx 0.45m made with mechanically woven, double twisted , hexagonal shaped wire mesh with wire made of low carbon, high ductile MS wire with heavy class of galvanization with an additional layer of PVC coating with mesh type of 10x12 as per EN 10223 & ASTM A975 , mesh wire of 2.70mm (I.D)/3.70mm(OD)tensile strength of 450-500/mm²,edge wire/selvedge around it at least 2.5 times, lacing wire (zink P.V.C. coated) of 2.20mm (I.D.) /3.20mm (O.D) P.V.C. coating thickness of 0.50mm nominal, 0.38mm minimum and with average weight per unit being 12 kg with additional 3% of the weight of box for lacing wire supplied separately, supporting the facing of the box with Zink coated steel wire of required length as directed, compling with A.S.TM and Europian norms, including payment of all duties,sale tax, any other taxes as applicable loading, unloading and staking them at the site of work in measurable stacks, complete as directed .

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 from Guwahati to Jallah =130.00Km.)

Filling and laying of nonwoven Geo-textile bag of dimension 2.00mx1.50m 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 volume 0.612 cum after filling,double locking chain 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). Without 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

Filling and laying in cage with silt filled 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 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. (Silt, Geo Bag, Wire Netting Sheets and Polypropylene thread will be supplied by the department free of cost). B) Without Boat

Supply of Pre stressed Cement Concrete (PSC) Porcupine members of size 0.10m X 0.10mX 3.00m with M-30 grade of cement concrete conforming to IS 1343 : 2012using super-plasticizer @ 1.2 lit/bag of cement with graded broken coarse aggregates up to 20mm size down conforming to IS 10262:2009 & IS 456:2000 and reinforced with 4 Nos. of 4 mm dia high tensile steel wire cable with necessary cover and 4mm high tensile stirrups at 250mm C/C, in conformity with IS-6403:R2002 and stressed to required strength not exceeding 9.18 N/mm, holes of 16 mm dia at 50 cm inside from both ends in the same face and in either face of post, another 2 Nos. of holes of size 16 mm dia at 65mm inside from both ends including properly curing for 21 (twenty one) days and carriage of porcupine members from factory to the stack yard of Divisional/ Sub-Divisional Store within a distance up to 20 Km including loading, unloading & stacking at Divisional/ Sub-Divisional Store, complete as directed. (Including forest royalty and all taxes as admissible)

Carriage of PSC porcupine members of size 0.10m X 0.10m X 3.00m from Divisional/ Sub-Divisional Store to Work Site including loading, unloading & stacking. (@ Rs. 1.68/member/Km for 2 Km)

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)

NABA BASUMATARY

JAGADISH DAS

SOMESWAR DAS