NHIDCL/RODDN/NH07/RC/26-27

Scaling of rock chunk lying on the slope i/c all cost of machinaries, cost of crackmite powder, if required, making the ramp i/c of all cost of labour, material, breaking of rock piece using breaker, and disposal of muck within a lead of 5km as per frawings and direction of Engineer-in-charge, Technical Specifications.

Seeding and Mulching (Preparation of seed bed on previously laid top soil, furnishing and placing of seeds, fertilizer, mulching material, applying bituminous emulsion at the rate of0.23 litres per sqm and laying and fixing jute netting, including watering for 3 months all as per clause 308)

Supply and installation of high tensile rolled cable net of minimum longitudinal tensile strength 100 KN/M and with a minimum tensile strength of wire of the cable as 1770 N/sqim with Zn Coating Class A or 95% Zn 5% Al Class-B Coating as per EN 10244-2:2009 with secondary wire mesh of 50050 mam size (Fe 500) for treatment of slopes including all cost of material, labour, special labour and TEP required to complete the work in all respect as per drawings. Technical Specifications and the direction of Engineer-in-charge. But excluding the cost of S/F of Self Driven Hollow Anchors/rock bolts which shall be paid separately.

Supply and fixing of Double Twisted Mesh over the geo-jute layer including all cost of material, labour and T&P required to complete the work in all respect with following properties: Mesh type: 10x12, Mesh opening: 100mm X 120mm Tensile strength (500 Mpa) at a minimum elongation of 10%. The minimum tensile strength of the mesh panel must be 40.0 kN/m in the parallel to the twist direction and 20.5 kN/m in the perpendicular to the twist direction in accordance with the requirements of IS 16014:2012. Zinc Coating: The coating weight shall be heavily coated and soft type confirming to the requirements of specifications IS 4826:1972 thesion of Zinc Coating: No flakes or crack shall be observed while testing for adhesion of zinc coating as per 15 4826:1972.

Supply and installation of Self drilling Hollow soft/ rock anchor of outer dia of 38 mm and inner dia of 19 mm, Yield Load Carrying Capacity of Minimum 400 KN in soil / overburden/rock suitable for drilling placing and cement grouting. Installation with all accesries such as 76 mm dia drill bit, couplers, 8mm thick base plate and nut and bolt complete in all respect.

Cement pressure grouting through hollow soil solid rock anchor of outer dia 76/51/38/32/25 in rock/overburden including all cost of material and equipments required to complete the grouting work at desired pressure.