Construction of retirement of B/Dyke from Bahari to Baghbar (Breach closing) along with protection works at Dokreswar area (From ch.45046m to ch.45826m).

Amount

Medium Jungles: Clearing medium jungles and trees up to 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.)

Felling trees including uprooting roots and stumps up to 50 cm. below ground, cutting into pieces and removing the same from the site of work etc. complete as directed. Trees above 0.50m and up to 1m girth:

Cutting bamboo, uprooting roots & stumps including removing them from the site of work, etc. complete as directed.

Earth work in embankment by Mechanical means by truck carriage with locally available ordinary/normal soil excluding sandy and rocky soil free from roots & vegetation and filling in uniform layers not exceeding 25 cm thick including ploughing or roughening or benching the seats, removing all debries, breaking clods up to 4 cm cube, dressing as per design section and compaction in layers not exceeding 30 cm in thickness and core cutter soil test at every layer and every 500 m distance, etc. complete as directed. B. Compaction with vibratory roller of 80-100 kN capacity For initial Lead up to 1.00 Km for all lifts. For beyond initial 1 Km & up to 10.00 Km & for all lifts. (Total Lead of 4 km)

Turfing with grass sods of largest possible rectangles of 12 cm. minimum thickness placed closely including dressing earth pegging with Jati bamboo split, watering till the grass grows for a lead up to 90 m and all lifts, etc. complete as directed.

Earthwork in bank trimming to the designed section /slope by manual means including removing the trimmed soils to a minimum distance of 30 m, complete as directed.

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 up to 50 m and all lifts Normal soil

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 eam 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)

Supply of Geo Bags Type-B (Size 2.00 m × 1.50 m inner to inner) (Pillow Type) made of composite layers of Polypropylene (PP) fibre as per IS 16653:2017 for Nonwoven and IS 16654:2017 for Woven: Woven Geo-textile for the outer cover (300gsm): The woven geo textile is woven with multifilament woven fabric manufactured from ultra violet stabilized polypropylene. 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. Properties i. Tensile strength (MD) ≥ 80 KN/m & Tensile strength (CD) ≥ 70 KN/m ii. Elongation (MD) ≤ 25% & Elongation (CD) ≤ 25% iii. Abrasion ≥ 75% iv. Trapezoidal Tear Strength (MD) ≥ 1500N & Trapezoidal Tear Strength (CD) ≥ 1300N v. CBR Puncture strength ≥ 900N vi. Permeability ≥ 18 l/m2/sec vii. AOS ≤ 250 micron viii. UV Resistance @ 500 hours retained Tensile strength (MD) & (CD) ≥ 80% ix. Mass ≥ 300 gm/m² x. Seam strength ≥ 50 % of actual fabric strength. Non-Woven Geo-textile for the inner layer (300gsm): It is needle punched non-woven geo-textile made of 100% polypropylene staple fibres which are formed into a random network for dimensional stability. It should resist UV degradation, rotting and alkalis. Properties i. Wide Tensile strength (MD) ≥ 15 KN/m & Wide Tensile strength (CD) ≥ 15 KN/m ii. Elongation (MD) ≥ 50% & Elongation (CD) ≥ 50% iii. Abrasion ≥ 95% iv. Trapezoidal Tear Strength (MD) ≥ 340 N & Trapezoidal Tear Strength (CD) ≥ 340 N v. CBR Puncture strength ≥ 3000 N vi. Permittivity ≥ 1.25 s-1 vii. Permeability ≥ 60 l/m2/sec viii. AOS ≤ 75 micron ix. UV Resistance @ 500 hours retained Tensile strength (MD) & (CD) ≥ 80% x. Mass ≥ 300 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. (Bags are to be supplied of 15 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)

Supply of Rope Polypropylene (PP) Gabion of size 2m × 2m × 0.45 m having the following properties i. Mesh opening size 150 mm × 150 mm ii. Rope Diameter of 9.0 mm iii. Linear Density of rope ≥ 65.1 gm/m iv. Tensile Strength ≥ 1900 Kg v. Abrasion Resistance of rope after 1000 cycles ≥ 65% vi. CBR Puncture Strength ≥ 7000 Kg.;

Supply of non-woven Geo-textile fabric sheets of 300 GSM manufactured from 100% virgin Polypropylene (PP) fibre with minimum properties as per IS 16653: 2017 • Wide Tensile strength (MD) ≥ 15kN/m & Wide Tensile strength (CD) ≥ 15kN/m • Elongation (MD) ≥ 50% & Elongation (CD) ≥ 50% • Abrasion ≥ 95% • Trapezoidal Tear Strength (MD) ≥ 340 N & Trapezoidal Tear Strength (CD) ≥ 340 N • CBR Puncture strength ≥ 3000 N • Permittivity ≥ 1.25 s-1 • Permeability ≥ 60l/m2/sec • AOS ≤ 75micron • UV Resistance @ 500 hours retained Tensile strength (MD) & (CD) ≥ 80% • Mass ≥ 300gm/m² • Thickness at 2KPa ≥ 3 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 & its dimensions clearly on each roll 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).

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

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. (Distance to be calculated with respect to FOR Guwahati to work site apprx distance=100Km)

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, etc. completed as directed. (Distance to be calculated with respect to FOR Guwahati to work site apprx distance=100Km)

Carriage of Gabion box of size 2.0m × 2.0m × 0.45m including loading & unloading, 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 with respect to FOR Guwahati to work site apprx distance=100Km)

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 to work site apprx distance=100Km)

Labour charge for laying Geo fabric sheet as filter bellow pitching including carrying, lapping, wrapping & stitching as directed by the Engineer-in-Charge.

Filling and laying of Geo bags of size 1.03 m × 0.70 m including excavation of sand/silt of size more than 80 micron from flood plain or adjacent chars within a distance of 90 m 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 150 m and laying properly as directed. (Geo Bag and Polypropylene thread will be supplied by the department free of cost) Without Boat

Filling and laying of nonwoven Geo - textile bag of dimension 2.00 m × 1.50 m including excavation of sand/silt from flood plain or adjacent chars within a distance of 90 m of the work site, filling geo bags with sand/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 100 m complete as directed. (Geo Bag and Polypropylene thread will be supplied by the department free of cost). With Engine Boat

Filling and laying of polypropylene gabion boxes of size 2.0 m × 2.0 m × 0.45 m filled with sand/silt filled Geo bags of size 1.03 m × 0.70 m including excavation of sand/silt from flood plain or adjacent chars within a distance of 90 m of the work site, filling geo bags with sand weighing 126.00 Kg 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 150 m and laying properly. (Geo Bag, gabion box and Polypropylene thread will be supplied by the department free of cost.) Without Boat

Construction of whole Bholuka Bamboo double Screen with matured Bholuka Bamboo stacks 75 mm to 100 mm dia., placed at 30 cm clear apart (i.e. 40 cm C/C) driven 4.00 m to 4.50 m below ground and 3.0 m to 3.50 m above ground with hydraulic driving equipment 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 galvanised wire of 16 G to 18 G 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)

Construction of temporary 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 least 0.75 m below ground and height above plinth of 2.5 m. Split Jatti bamboo/tarza wall 10 cm thick touch roofing over bamboo rua frame, placing 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, roofing with TATA Shaktee roofing sheets 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)