Kamrup/SDMF/03

Clearing and grubbing road land including uprooting wild vegatation ,grass, bushes,shrubs,saplins and trees of girth upto 300 mm, removal of stumps of such trees cut earlier and disposal of unserviceable materials and stacking of serviceable material to be used or auctioned upto lead of 1000 m including removal and disposal of top organic soil not exceeding 150mm in thickness as per technical specification clause 201 ( a ) In area of non thorny jungle

Excavation for structures (Earthwork in excavation of foundation of structure as per drawing and technical specification including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides ands bottom and backfilling with approved material. I) Oridinary soil A) Manual Means (II) With dewatering

Removal of unsuitable soil including excavation, loading and disposal upto 1000m lead but excluding compaction ground supporting embankment subgrade replacement by suitable soil, which shall be paid separately as per Clause 303.5.2 as per Technical Specification Clause 302.3.11

Providing and laying one layer of Non woven Geo textile of minimum mass per unit area of 280gms/sqm. having minimum roll width of 5.0m treated with carbon black with physical properties as given in clause no 702.2.3 over 25mm thick compacted sand layer on a prepared subgrade as a filter media with necessary overlaps as per drawing and technical specification and as directed by the Engineer in charge. completed .

Providing and laying of high strength flexible geo-grid as primary reinforcement at site store maintained by contractor with a high quality coating like LDPE or equivalent. Latex or Polymer coating or geo-textile or any other coating shall not be permitted. Selection of geo-grid be strictly based on long term design strength values for a design life of 120 years at 30 degree celcius GEOGRID shall have high strength flexible uniaxial with low creep characterististics consisting of polyester (PET) & having an outer protective coating of low density polyethylene sheath. It shall have ultimate tensile strength as mentioned below against each sub item for reinforcement in flexible tetaining wall etc.. complete as per detailed technical specifications attached and as directed by Engineer -in-charge. Ultimate tensile strength - 500 kn/m.

Supplying and installation of stone facia unit with integrated tail as secondary reinforcement of length 2m that is made of mechanically woven, double twisted hexagonal shaped wire meshm mesh type 10x12 as per IS 16014: 2018, having D=100mm with tolerence of +/-10%, wire dia ID/OD 2.7/3.7mm, Zinc+ High Abrasion Resistant Polymer class A coated, mechanically edged/selvedged and shall have minimum 10 numbers of mesh openings per meter of mesh perpendicular tp twist, with partition at 1m interval etc. (Exclusive of supply and filling of stones) complete as per detailed technical specifications attached and as directed by Engineer in charge. (Analysis Rate ) Size of stone Facia Unit 3x3x1 M (L X B X H)

Providing and laying of boulder apron for bed protection with stone boulders of minimum size and weight as table 1300.1, no fragment weighing less than 25kg laid dry complete as per drawing and technical specification Clause 1301 .

Back filling behind abutment, wing wall and return wall complete as per drawings & technical specification Clause 1204.3.8. Sandy Soil.

Supplying and laying of drainage composite for use behind walls, between two different fills etc. having three dimensional composite with thermobonding a draining core having " N" configuaration in extruded monofilaments of minimum thickness 8mm, with two filtering UV stabilized polypropylene nonwoven geotextile of minimum thickness of 0.75mm charactersitic opening size (090) of 150 micron and tensile strength of 8.0KN/m that will be working as separation or protecting layer, Geocomposite having in plane flow capacity of 2.1 L/(m.s) at hydraulic gradient of 1.0& 20 kPa pressure and tensile strengthof 28 kN/m with mass per unit area of 1400 gsm, havingminimum creep reduction factor of 1.15 for 100 years life at 100kPa, at easily accessible location including top and bottom, with all leads and lifts, manpower and machinery, materials labour etc. complete and as directed by Engineer in charge .

Construction of a narrow filter subsurface drain consisting of porous or perforated pipe laid in narrow trench surrounding by a geotextile filter fabric with a minimum of 450mm overlap of fabric and installed as per clause 702.3 and 309.3.5 including excavation and backfilling.