Immediate measures for restoration at 6th km Borbeel area on the dyke Desang bund right bank from Nangalamora to Bahgarh under SDRF for 2021-22

Amount

Cutting bamboo, 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 (1.03 x 0.70 M) inner dimention made of Geo-textile non-woven fabric sheets of 400 GSM manufactured from 100% virgin Polypropylene (PP) fibre having thickness not less then 3.00mm with minimum properties as (i) Tensile strength (CD) ≥ 24 KN/m (ii) Tensile strength (MD) ≥ 22 KN/m (iii)Mass ≥ 400.00Gm/m2 (iv) CBR Puncture strength ≥ 4100 N/m2 (v) Elongation @ break (Warp) ≥ 54% (vi) Elongation @ break (Weft) ≥ 52% (vii) Abrasion ≥ 70% (viii) UV Resistance @ 500 hours ≥ 70% (ix) AOS 75 micron (x) Permeability ≥ 1.25, (xi) Trapazoidal Tear Strength ≤ 520 N (xii) Permeability = 45Lt/m2/sec (xiii) 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 ) FOR GUWAHATI.

Carriage of Geo bags of size 1.03 x 0.07 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)

Supply of Geo textile bags of Type-B (Size 2.00m x 1.50m) inner dimention 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) ≥250 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 SSAM” 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.

Carriage of Geo bags of size 2.00 x 1.50 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)

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 2.0m x 2.0m x 0.45m 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 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 300 gsm Goe 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)

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

Supply of Sewing Thread/ Yarn PPMF Stitching Thread (2000 Den Kaplon) i/c payment of taxes.

Collection and supply of River silt by truck carriage free from debries and other foreign material payment of forest royalty if any, etc.(For initial Lead beyond 1/2 Km and upto 4.00 km for all lifts.)

Filling and laying of polypropylene gabion boxes filled with silt filled Geobags of size 2.0m X2.0m X0.45m excluding excavation of specified silt from flood plain or adjacent chars within a distance of 90m of the worksite, filling geobags with silt weighing 126.00Kg 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 or part as directed, carrying the same to the dumping site including all handling charges and local carriage within a distance of 150m and laying properly complete as directed. (Silt, Geo Bag, Gabion Box 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 excluding excavation of specified 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. (Silt, Geo Bag and Polypropylene 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 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. (Silt, Geo Bag and Polypropylene thread will be supplied by the department free of cost.) b. Without Boat

Filling and laying of nonwoven Geo-textile bag of dimension 2.00mx1.50m excluding excavation of specified 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) With boat.

Construction of Embankment with Material Obtained from Borrow Pits Construction of embankment with approved material obtained from borrow pits with a lift upto 1.5 m, transporting to site, spreading, grading to required slope and compacting to meet requirement of Tables 300.1 and 300.2 with a lead upto 1000 m as per Technical Specification Clause 301.5

Haulage excluding Loading & Unloading (A) Haulage of materials by tipper excluding cost of loading, unloading and stacking. Case-III: Katcha Track and Track in River Bed/Nallah Bed and Choe Bed

Excavation in Ordinary Soil Excavation in Cutting in Soil by manual means with lead upto 50 m Excavation for roadway in soil using manual means for carrying of cut earth to embankment site with a lift upto 1.5 m and lead upto 50 m as per Technical Specification Clause 302.3 (Manual method should be adopted where machines can not be deployed due to site condition)

Excavation in Ordinary Soil Excavation in Soil using Hydraulic Excavator and Tippers with disposal upto 1000 m Excavation for roadwork in soil with hydraulic excavator of 0.9 cum bucket capacity including cutting and loading in tippers, trimming bottom and side slopes, in accordance with requirements of lines, grades and cross-sections, and transporting to the embankment location with a lift upto 1.5 m and lead upto 1000 m as per Technical Specification Clause 302.3

Collection and supply of broken stone metal of size 13mm to 38mm in average from river boulder free from dust, dirt and other foreign materials from approved quarry ( Bihubor) including necessary carriage loading, unloading including local carriage and stacking in regular measurable stacks of approximate 1 (one) m height at work site, payment of forest royalty etc complete as directed

Labour charge for making filter bed of required thickness with broken 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

Earth work in filling by mechanical means including ramming means by deploying hydraulic excavator and trippers etc. with locally available ordinary soil excluding rocky soil with all lead and lift, transporting to site, spreading, dressing as per design section including ploughing or roughening or benching the seats, removing all debris, breaking clods up to 2.5cm cube, 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 earth work on account of shrinkage)

Construction of whole Bhaluka Bamboo screen with matured Bhaluka Bamboo stacks 75mm to 100mm dia, placed at 30cm clear apart ( i.e. 40cm C/C) driven 4.00m to 4.50mbelow ground and 3.00m to 3.50m above ground with hydraulic driven equipments including hire charge of equipment, cost of P.O.L. etc and providing with 1 (one) row of horizontal half Jati Bamboo kamies tied with galvanized wire of 16G to 18G etc complete as directed. (Using Bhaluka Bamboo at the rate of 240.00 nos/Rm & Jati Bamboo at the rate of 9.60 nos/Rm)

RCC Guard Post: Supplying, fitting and fixing RCC guard post 150cm long erected 75cm above the ground and 75cm below the ground with M-15 grade (nominal mix 1:2:4 with broken stone aggregate up to 20mm size) of cement concrete and required reinforcement tied in position with annealed black wire including centering, moulding the top, curing including painting concrete surfaces in 23cm strips upto 0.75m from the top alternately in black and white and having 2 nos. reflective band of desired shade etc. complete as per design and as directed. 15 cm dia. RCC guard post with reinforcement of 4nos. 12mm dia TMT main steel bars and 6mm TMT/ MS stirrups at 15cm c/c.

Construction of temporary shed of two roof with mud plinth of 0.45 m height above ground level with Bhaluka Bamboo post 1.50m apart driven at atleast 0.75 m below ground and height above plinth 2.50 m. Spilt Jati bamboo wall mud plastering white washing 2 coats, 10cm th[ck touch roofing over bamboo rua frame plaching 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 complete as directed (Using Bhaluka Bamboo at the rate of 6.00 nos/Rm & Jati Bamboo at the rate of 61.00 nos/Rm)

Supply of ordinary labours inclusive of all taxes

DHRUBAJIT CHETIA

M/s KALITA CONSTRUCTION

LILAJYOTI PHUKAN

M/S EAST INDIA CONSTRUCTION

ADITYA DOWARAH