NHDC Limited Tender

Providing and fixing 25 mm dia. steel rock bolts with one end provided with mechanical/ wedge type anchorage and other end provided with hreads for fixing washers and nuts including cost of all materials, machinery, labour, ventilation, lighting,drainage, drilling 35-40 mm dia. holes,providing 150 mm long, 20 mm thick steel tapered wedge,providing 10 mm thick and 200 x 200 mm size plate washer and nuts, driving bolt, fixing washers and nuts, tightening bolt by torque wrench after hardness of the cement grout and all other ancillary operations etc., complete.

Providing and fixing G.I. chain link wire mesh of required width in mesh size 50x50 mm including strengthening with 2mm dia. wire or nuts, bolts and washers as required complete as per direction of Engineer in Charge Made of GI wire of dia 4 mm.

Providing, fabricating and placing in position steel reinforcement bars for Reinforced Cement Concrete / Plain Cement Concrete structures including cost of all materials,machinery, labour, cleaning, straightening, cutting, bending,hooking, lapping/welding joints wherever required, tying with 1.25 mm diameter soft annealed steel wire, etc.,complete.

Providing shotcrete on old damage concrete/masonry surface or on rock surfaces, comprising of cement, sand,coarse aggregates, water and quick setting compound in designed proportions having minimum density of 2000 kg/cum and strength not less than 25 MPA including preparation of surface by removal of old damaged concrete, cleaning by wire brush/ air water jet, including cost of all material,machinery, labour, T&P, cost of other incidental charges and testing as per relevant specifications etc complete. For average 40mm thick layer.

Supply and installation of Gabion structure with Mechanically Woven, metallic coated (galvanized with zinc in accordance with IS 4826) steel wire conforming to IS 280, Double Twisted Hexagonal Shaped Wire mesh Gabion Boxes of required size, Mesh Type 10x12 (D=100 mm with tolerance of ± 2%) Zinc+polymer (PVC,PA6,etc) coated, Mesh wire diameter 2.7/3.7 mm (ID/OD), mechanically edged/selvedged with partitions at every 1 m interval and shall have minimum 10 numbers of openings per meter of mesh perpendicular to twist, Dark Brown rust (DBR) not more than 5% after subjecting to atleast 3000 hours of neutral salt spray ,with minimum tensile strength of 40kN/m and punch strength of 25 kN as per IS 16014:2018, IRC SP 116:2018 and MORTH Clause 2500, abrasion resistant in accordance with ASTM A975, tying with lacing wire of diameter 2.2/3.2mm(ID/OD), supplied @ 3% by weight of Gabion boxes, filled with boulders with least dimension of 200 mm, including cost of all material,machinery, labour, T&P, cost of other incidental charges and testing as per relevant specifications etc.,complete.Note: Coatings that exhibit no more than 5% DBR after extended hours of neutral salt spray exposure,comparable to the highest quality products available in the market, are more preferable. Gabion box of size 3m*1m*1m (excluding cost of boulders but including Royalty)