NHIDCL/RO-Agt/RW/NH-08/M C/2025-26/779

Construction of Embankment with material Obtain from Borrow pit Construction of embankment with approved material obtained from borrow pits with all lifts, 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 MoRT&H Technical Specification clauses of section 300.

Backfill with approved material obtained from borrow pits with all lifts, 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 MoRT&H Technical Specification clauses of section 300.

Gabian Structure for Retaining Earth Providing and construction of a gabian structure for retaining earth with segments of wire crates of size 7 m x 3 m x 0.6 m each divided into 1.5 m compartments by cross netting, made from 4 mm galvanised steel wire @ 32 kg per 10 sqm having minimum tensile strength of 300 Mpa conforming to IS:280 and galvanizing coating conforming to IS:4826, woven into mesh with double twist, mesh size not exceeding 100 x 100 mm, filled with boulders with least dimension of 200 mm, all loose ends to be tied with 4 mm galvanised steel wire as per drawing and MoRT&H Technical specifications clause 2503.3.

Reinforced Earth Retaining Wall (Reinforced earth retaining walls have four main components as under: (a) Excavation for foundation, foundation concrete and cement concrete grooved seating in the foundation for facing elements (facia material). (b) Facia material and its placement. (c) Assembling, joining with facing elements and laying of the reinforcing elements. (d) Earthfill with granular material which is to be retained by the wall. B. With reinforcing elements of synthetic geogrids

Laying of a geotextile 120 gsm non woven membrane, 100% polyester of thickness 1 to 1.25 mm between pitching and embankment slopes on which pitching is laid to prevent escape of the embankment material through the voids of the pitching with cement concrete blocks as well as to allow free movement of water without creating any uplift head on the pitching as per drawing and MoRT&H Technical specifications clause 700, 2504 bonded to the membrane with intermittent touch by heating the membrane by Butane Torch as per manufactures recommendation.

Supply and installation of 100mm diameter semi-perforated PVC pipe inside the slope wrapped with non woven geotextile complete as per drawing and as directed by the engineer.

Steel Reinforced Geo mat on the slope Providing and Spreading Reinforced Geocomposite made of Polypropylene Polymer made three dimensional matrix of minimum mass per unit area 420 grams/sqm extruded onto a mechanically woven double twisted hexagonal shaped steel wire Mesh of wire Dia. 2.7mm and Mesh Type 8 x 10 having Zn-5%Al +Polymer coating as per EN 10244 -2, the composite shall have a combined mass per unit area more than 1650 Grams / Sq.m and nominal thickness more than 10mm including fixing of U pins of 10mm diameter of typical depth 1m at 1m c/c spacing or anchor fasteners (if required) , including top/bottom support ropes, lacing required to connect the nets and all accessories such as U-clamps, including safety, all other ancillary works, material, machinery, labour, etc. complete with all leads and lifts and as directed by Engineer - In - Charge.

Supplying, fitting & placing uncoated Mild steel reinforcement in foundation complete as per drawings & MoRT&H technical specifications Clauses 1600.

Providing and Laying reinforced cement concrete pipe NP3/ prestressed concrete pipe with collar for culverts on first class bedding of granular material in single row including fixing collar with cement mortar 1:2 but excluding excavation, protection works, backfilling, concrete and masonry works in head walls and parapets as per MoRT&H Technical specification Clause 2900. x 1200 mm dia