1. Rock Bolt 2500 Nos Standard length 3 meters Profile diameter 36 mm Hole diameter 41- 52 mm Tube material thickness 2 mm Maximum breaking load 160 KN Typical elongation 20% to 30% Min weight of bolt 2.8 Kg/m Type of steel S275JR/S355MC 2. Face Plate 2500 Nos Size 150 x 150 x 4 mm Hole dia of face plate 40 mm Type - Dome type Steel HSLA Gr 75 Ksi 3. Rock Bolt 1000 Nos Standard length 2.5 meters Profile diameter 27 mm Hole diameter 32 -39 mm Tube material thickness 2 mm Maximum breaking load 120 KN Typical elongation 20% to 30% Min weight of bolt 2.0 Kg Type of steel S275JR/S355MC 4. Face Plate 1000 Nos Size 150 x 150 x 4 mm Hole dia of face plate 30 mm Type - Dome type Steel HSLA Gr 75 Ksi