Bank protection works of river Mora-Bharali from Parua Chariali to Kalaguru Bishnu Prasad Rabha Samadhi (Ph-I).

Amount

Earth work in excavation of drainage channel to the proper grade and slopes as required including disposing the excavated debris/soil to a safe distance of minimum 50 m distance, etc. complete as directed. For lead upto 50 m and all lifts Wet & Sticky Soil

Compacting Original Ground : (i) Compacting original ground supporting embankment :Loosening, Levelling and Compacting original ground supporting embankment to facilitate placement of first layer of embankment, scarified to a depth of 150 mm, mixed with water at OMC and then compacted by rolling so as to achieve minimum dry density as given in Tables 300.1 and 300.2 for embankment construction as per Technical Specification Clause 301.4.1.

Earth work in excavation of drainage channel by mechanical means to the proper grade and slopes as required including disposing the excavated debris/soil to a safe distance of minimum 50 m distance, etc. complete as directed. For lead upto 50 m and all lifts Normal Soil (2.08.1)

Supply of Geo-textile bags of type-A (1.03 × 0.70 m) inner to inner made of Geo-textile non-woven fabric sheets of 400 GSM manufactured from 100% virgin Polypropylene (PP) fibre with minimum properties as per IS 16653:2017 i. Wide Tensile strength (MD) ≥ 20KN/m & Wide Tensile strength(CD) ≥20 KN/m ii. Elongation (MD) ≥50% & Elongation (CD) ≥ 50% iii. Abrasion ≥ 95% iv. Trapezoidal Tear Strength (MD) ≥ 450N & Trapezoidal Tear Strength (CD) ≥ 450N v. CBR Puncture strength ≥ 4000N vi. Permittivity ≥ 1.10s – 1 vii. Permeability ≥ 40l/m2/sec viii. AOS ≤ 75 micron ix. UV Resistance @ 500 hours retained Tensile strength (MD) & (CD) ≥ 80% x. Mass ≥ 400 gm/m² xi. Thickness at 2KPa ≥ 3 mm xii. Seam strength ≥ 80 % of actual fabric 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 in a bundle, properly packed with each bag having proper tag with name of Manufacturer, Batch Number, the GSM and type of polymer encrypted and stitched on top corner and each bag is to be marked with “WRD Govt. of ASSAM” to be printed distinctly. 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 × 0.70 m / 1.0 x 0.7m including loading & unloading, stacking, etc. complete and including hire charge of truck with driver and handyman cost of POL etc. completed as directed.

Supply of G-Mat in double layered composite Geo-textile fabricated to form a three dimensional mattresses, the upper layer of the mattress being heavily woven with polypropylene fabric needle-punched with a mixture of U.V. stabilized green fibres and cut tape yarns with Upper Layer Properties as i. Mass per unit area > 650 GSM, ii. Tensile Strength (MD) ≥ 70kN/m, iii. Tensile Strength (CD) ≥ 70kN/m iv. Tensile Elongation (MD) ≤ 25%, v. Tensile Elongation (CD) ≤ 25%, vi. Pore Size < 0.35 mm vii. Abrasion Resistance ≥ 35 %, viii. UV @ 500 hours ≥ 90% ix. Resistance to Oxidation @ 100°C for 28 days) ≥ 80% and Lower Layer Properties as i. Mass per unit area > 400 GSM, ii. Tensile Strength (MD) ≥ 110kN/m, iii. Tensile Strength (CD) ≥ 90kN/m iv. Tensile Elongation (MD) ≤ 25%, v. Tensile Elongation (CD) ≤ 25%, vi. Pore Size < 0.35mm, vii. Abrasion Resistance ≥ 60 %, viii. UV @ 500 hours ≥ 90% ix. Resistance to Oxidation @ 100°C for 28 days) ≥ 80% The sewing thread should be of high tenacity polyester and parallel stitches are to be continued positioned at 350 mm apart with a stitch length not exceeding 5 mm. (Each roll of G-Mat should be supplied in properly packed bundle and should be marked with the Name of Manufacturer & Batch Number & its dimensions clearly on each roll with “WRD Govt. of ASSAM” to be printed on it and mentioning properly the GSM (for both upper and lower layer) and types of polymer (for both upper and lower layer) and Test Certificate from approved NABL accredited and ISO Certified Laboratory should invariably be submitted against each batch of material) (Without Custom Duty)

Carriage of Geo Mat of including loading & unloading, stacking cost of P.O.L., etc. complete and including hire charge of truck with driver and handyman, etc. completed as directed. (Distance to be calculated from Guwahati)

Supply of Galvanized Wire Netting Sheet made of 8 SWG wire 152mm square mesh in sheet 2.57m × 1.66m with longitudinal wire at 152 mm centre and 76mm projection of each wire on all sides beyond the net size of 2.42m × 1.5m having knots of 12 SWG at every joints, weight of each sheet should not be less than 6.3 Kg/sheet. (11.12)

Carriage of wire netting sheets of size 2.57 × 1.67 m made of 8 G wire of 152mm Sq. mesh including loading &unloading, stacking cost of P.O.L. etc. complete and including hire charge of truck with driver and handyman, etc. completed as directed. (Distance to be calculated from divisional store)

Labour charge for laying, fitting and fixing of double layered Geo textile, fabricated to form a three dimensional mattresses after filling sand at design slope, filled up with sand by pump, anchoring by cutting/ at already excavated trench at the upper and lower end of slope of depth 1.00 m × 0.75 m placing the mat by bending it into the trench, filling the trench by earth filled cement bags/ sand / silt filled type - A geo-bags, sides of mattresses in sloping direction stitched by Polypropylene thread with double locking chain stitch not less than 3 stitches per 2.50 cm to achieve minimum stream strength including all handling and carriage charge complete as directed. (Polypropylene thread will be supplied by the department free of cost) (8.03)

Filling and laying of Geo bags of size 1.03m × 0.70m including excavation of sand/silt of size more than 80 micron from flood plain or adjacent chars within a distance of 90m of the work site, filling geo bags with sand/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) (a) Without Boat. (8.01B.1)

Filling and laying in cage with sand/silt filled Geo bags of size 1.03m × 0.70m including excavation of sand/silt from flood plain or adjacent chars within a distance of 90m of the work site, filling geo bags with sand/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 2.57 × 1.66m 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/cage and Polypropylene thread will be supplied by the department free of cost) a) Without Boat.

Collection and supply of River silt by truck carriage free from debries and other foreign material, etc. complete as directed. By mechanical Means For initial upto 1.00 Km & for all lifts.(2.23)

Supply of Sewing Thread/Yarn PPMF Stitching Thread (2000 Den. Kaplon). (10.19)

Supply of Ordinary / unskilled labour

By Mix in Place Method : Construction of granular sub-base by providing well graded material, spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator at OMC, and compacting with smooth wheel roller to achieve the desired density, complete as per Technical Specification Clause 401. For Grading I Material

WBM Grading 3 : Using stone screening Type-B 11.2 mm for Gr.III Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with smooth wheel roller 80-100 kN in stages to proper grade and camber, applying and brooming, stone screening to fill-up the interstices of coarse aggregate, watering and compacting to the required density Grading 3 as per Technical Specification Clause 405. By Mechanical Means

Inter locking concrete Block pavement : (A) Interlocking pavement block : Providing and laying interlocking concrete block pavement with M40 grade grade of concrete blocks having thickness 80mm as per technical specification clause 1504 complete including carriage. a) Including Edge block/ Edge restraints