Rate call notice no.5 for 2026-27

Scaling of loose rock mass up to 200 mm thick and disposal at 3 km from the site as directed, including all material, labour, machinery.

Design, Supply and fixing rock fall protection / stabilization system comprising of ETA certified HTS cable nets / HTS wire of cable diameter of minimum 6 mm twisted or straight with tensile strength of net minimum 220 kN/m, fixed by sufficient anchoring in rock as per design with arrangement of providing and fixing of boundary and intermediate support ropes 12 mm diameter of High Tensile Steel Wire rope grade 1770 N/Sq. mm with coating for corrosion resistance, 95% Zn + 5% Al (+/- 1%) as per EN-10244-2-2009); Secondary mesh having minimum tensile strength of 30 kN/m, with minimum mesh width not more than 90 mm including top & bottom support rope, lacing wire and rope required to connect the nets and all other accessories such as clamps, buckles, plates, thimbles including safety and all other ancillary works, material, machinery, labour. Drilling of 75 mm to 100 mm dia. holes and providing, fixing 32 mm diameter of Fe 500 surface steel nails/anchors of 8 m length and grouting the holes by cement grout with necessary admixtures at grid pattern of 2.00 m × 2.00 m c/c including all material, machinery, labour, etc. complete; or equivalent or higher system along with detailed drawings & specifications. Equivalent or higher system will be evaluated by IIT.

Design, Supply and Installation of High Tensile Steel Wire Mesh/Drape System comprising of of ETA certified HTS cable net having minimum tensile strength of 100 kN/m of primary net with tensile strength of wire 1770 N/Sq. mm with coating for corrosion resistance, 95% Zn + 5% Al (+/-1%) (min 250 gsm) as per EN-10244-2-2009) with mesh width not more than 290 mm. Secondary mesh having minimum tensile strength of 30 kN/m, with minimum mesh width not more than 90 mm and fixing minimum 10 mm diameter wire rope anchor having yield strength of 500 N/mm² or equivalent of 3 m length and grouting holes by cement grout with necessary admixtures at top and bottom at pattern of 3.5 m to 4.0 m c/c including top and bottom support rope and all other accessories, material, machinery, labour, etc. complete; or equivalent or higher system along with detailed drawings & specifications. Equivalent or higher system will be evaluated by IIT.

Supply and installation of 3D Erosion Control Mat of PP/PET having minimum mass per unit area 400 gm / sqm along with a steel wire mesh having 95% ZN + 5% Al coating for Slope protection. The composite shall have a minimum longitudinal tensile strength of 150 kN/m. lncluding all necessary accessories required for erosion control mats in place as per technical specifications attached and as directed by Engineer in charge.

Providing and application of hydraulically applied erosion control products by means of hydroseeding/ hydro mulching on the hill side and valley side Slope surface for erosion control by means of vegetation including safety, all other ancillary works, material, machinery labour, etc; with all leads and lifts and as per detailed technical specifications and as directed by ElC.

Supply and installation of multi strand prestressed cable anchors with initial prestress load of minimum 1094 kN (with 6 nos. of 15.2 mm dia strands with breaking load per mono strand of minimum 260.7 kN) and drill hole dia of 150 mm with full length grouting in two phases, protective sheath for exposed part above the anchor head, centralizers, including all ancillary items for anchoring, grouting and stressing on the slope surface along with casing (if required) for drilling in collapsible strata as per detailed technical specifications and as directed by Engineer-in-Charge.

Providing subsurface drain hole (horizontal / inclined) in the slope with perforated PVC pipe (lined with Non Woven Geotextile) of 50 mm internal diameter by drilling and inserting the perforated PVC pipe as per the drawings etc. complete.

Design, Supply, Pretensioning and installation of 2000 Kilojoule Rock Fall Barrier in horizontal plane for protection against vertical fall on carriageway. Energy Class: 2000 kJ, Wire Diameter Min.: 3 mm, Ring Diameter Max.: 350 mm, Rope Diameter Min.: 16 mm, Barrier Height Min.: 5m, Tensile Strength: 1770 N/mm², ETAG 027 Certification Required, or equivalent/higher system along with detailed drawings and specifications. The equivalent or higher system will be evaluated by IIT.

Design, Supply, Pretensioning and installation of 2000 Kilojoule Rock Fall Barrier in horizontal plane for protection against vertical fall on carriageway. Energy Class: 2000 kJ, Wire Diameter Min.: 3 mm, Ring Diameter Max.: 350 mm, Rope Diameter Min.: 16 mm, Barrier Height Min.: 6m, Tensile Strength: 1770 N/mm², ETAG 027 Certification Required, or equivalent/higher system along with detailed drawings and specifications. The equivalent or higher system will be evaluated by IIT.

Providing and fixing continuously threaded bars of diameter 32 mm, yield load more than 400 kN, hexagonal nut, washer plate 200 × 200 × 10 mm size, coupler for connecting bars and full length grouting with admixtures including all ancillary works for top / bottom / cortical anchoring including all ancillary material, machinery, labour, etc. complete as directed by Engineer-in-Charge.