Anti-erosion measures to protect Desang bund left Bank from Pathaligarh to Bahgarh at 16th Km near Chiringdubi. RETENDER

Amount

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 25cm. thick including ploughing or roughening or benching the seats, removing all debries, breaking clods up to 4cm 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 500m distance, etc. complete as directed. B. Compaction with vibratory roller of 80-100Kn capacity. For initial lead up to 1 Km for all lifts.

Ordinary/unskilled labour

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 atleast 0.75 m below ground and height above plinth 2.5m. 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. compple as directed. (Using Bhaluka Bamboo at the rate of 6.00 nos/ Rm & Jati Bamboo at the rate of 61.00 nos / Rm)

Medium Jungles: Clearing medium jungles and trees upto 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)

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

Cutting banana trees , uprooting roots & stumps including removing them from the site of work up to a distance of 30m, etc. complete as directed.

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.

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

Supply of Geo-textile bags of type A (1.03 x 0.70M) inner to inner made of Geo-textile non-woven fabric sheets of 400 GSM manufactured from 100% virgin Polypopylene (PP) fiber with minimum properties as per IS 16653 : 2017 (i) Wide Tensile strength(MD) ≥ 20 kN/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≥ 1.10 s-1 (vii) Permeability ≥ 40 l/m2/sec (viii)AOS ≤ 75 micron (ix) UV Resistance @ 500 hours retained Tensile strength (MD) & (CD) ≥ 80% (x) Mass ≥ 400gm/m2 (xi) Thickness at 2 Kpa ≥ 3mm (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 100mm. (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 of Type-B (Size 2.00m x 1.50m 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 ≥ 300gm/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 fibers which are formed into a random network for dimensional stability. It should resist UV degradation, rotting and alkalis. (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) ≥ 340N & Trapezoidal Tear Strength (CD) ≥ 340N (v) CBR Puncture strength ≥ 3000N (vi) Permittivity ≥ 1.25 s-1 (vii) Permeability ≥ 60 l/m2/sec (viii)AOS ≤ 75 micron (ix) UV Resistance @ 500 hours retained Tensile (xi) Thickness at 2 Kpa ≥ 3mm strength (MD) & (CD) ≥ 80% (x) Mass ≥ 300gm/m2 (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 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).

Construction and supply of Wire-netting box of size 1.50m x 1.50m x0.45m made with mechanically woven, double twisted, hexazonal 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 2.50times, lacing wire (Zinc PVC coated) of 2.20mm (I.D.)/3.20mm(OD) VC coating thickness of 0.50mm nominal, 0.38mm minimum, Mesh opening size 150mm x 150mm and with average weight per unit being 12kg with additional 3% of the weight of box for lacing wire supplied separetly, supporting the facing of the box with zinc coated steel wire of required length as directed, complying with ASTM and Europpean norms.

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 (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) ≥ 340N & Trapezoidal Tear Strength (CD) ≥ 340N (v) CBR Puncture strength ≥ 3000N (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 ≥ 300gm/m2 (xi) Thickness at 2 Kpa ≥ 3mm (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 x 0.70m/1.0m x 0.70m 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 from Divisional Store)

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, etc. completed as directed. (Distance to be calculated from Divisional Store)

Carriage of 300 gsm Geo sheet 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)

Filling and laying of Geo bags of size 1.03m X 0.70m excluding 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 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/Silt, 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 2.00m × 1.50m 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 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) 2) With Engine Boat

Collection and supply of sand from approved quarry of specified grade for construction work free from debries and other foreign material etc. Complete as directed.

Filling and laying in PVC coated W.N. Box of size 1.5mX1.5mX0.45m with sand/silt filled Geo bags of size 1.03m x 0.70m excluding excavation of sand/silt , filling geo bags with sand/silt, having minimum weighing 126.00 Kg and minimum volume 0.084Cum 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 PVC coated W.N. Box, Complete as directed.(Geo Bag , PVC coated Wire netting Box and Polypropylene thread will be supplied by the department free of cost) Without Boat .

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 50m distance, etc. Complete as directed. For lead upto 50m and all lifts. Normal Soil.

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

Collection and suppy of broken stone metal of size 13 mm. to 38 mm in average from river bouder free from dust, dirt and other foreign materials from approved quarry ( Bihubor) including necessary carriage loading , unoading incuding 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 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. Without boat

Earth work in filling by mechanical means by deploying hydraulic excavator and trippers etc. including ramming 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, etc. complete as directed. (12.5 % deduction will be made from the section measured quantities of the completed and compacted earth work on account of shrinkage). For initial lead upto 1.00Km and for all lifts.

Collection of Sand gravel from approved quarry containing 60% sand & 40% gravels free from disintegrated and flaky pieces of vegitation and other deleterious matters,adherent coating etc. including stacking in suitable stacks at quarry site etc. complete as directed.

Labour charge for laying of soling stone, brick bats, broken stone metal, sand gravel etc. on approach road including ramming dressing the seat and local carriage of materials up to a distance of 60 m complete as directed.

RCC Guard post : Supplying, fitting and fixing RCC guard post 150cm long erected 75cm above the ground and 75cm below the ground with M15 grade (normal 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 up to 0.75m from the top alternately in black and white and having 2nos reflective band of desired shade etc. complete as per design and as directed.b)15cm dia RCC guard post with reinforcement of 4 nos 12 mm dia TMT main steel bars and 6 mm TMT/MS stirrupps at 15cm C/C.

DHIRAJ GOGOI

SRI MONTU KONWAR