Rock Bolts – Solid Bar
| Physical Properties | Minimum | Typical |
|---|---|---|
| Yield Strength | 600MPa / 220kN | 650MPa / 240kN |
| Tensile Strength | 840MPa / 305kN | 890MPa / 340kN |
| Calculated Shear Strength | 200kN | 225kN |
| Elongation (After Fracture) | 15% | 19% |
| Mass Per Metre | 3.01kg |
| Bar Core Diameter | 21.6mm |
| Major Bar Diameter | 24.2mm |
| Cross Sectional Area | 370mm² |
| Rolled Thread | M24x3.0mm Pitch |
Key Features
- Manufactured from a special hot rolled deformed bar designed by DSI Underground.
- This bolt features a rib pattern which actively assists with mixing the chemical anchors during installation.
- The AT bolt typically provides marginally higher fracture toughness results over standard AX bar when measured by Charpy Impact Test.
- The deformed rib pattern improves load transfer properties.
- The rolled thread strength nominally equals the column strength of the bar.
- The 24mm chemical anchor bolt is designed to be used with the chemical anchors, but can be effectively used with cementitious grouts.
- Corrosion protection may be provided by hot dip galvanizing or alternative coatings.
Installation Guide Lines
- 28mm hole diameters are preferred. If larger diameter holes are to be used, refer to "Posimix" bolt on data sheet WS.
- Hole depth is critical. Hole depth should be shorter than the bolt to allow for the height of the washer and nut.
- It is important to follow the resin anchor recommended mixing and hold times as printed on the resin anchor cartons.
DO NOT OVER MIX.
Standard Lengths & Packaging
- Standard bolt lengths range from 600 to 3000mm in 300mm increments.
- Non-standard requirements are available by negotiation.
- Bolts are packaged in bundles with threads protected by heavy duty polyethylene bags.
- Bolt fittings, such as nuts, anti-friction washers and domed balls, are supplied fitted to rock bolts in the configuration requested.
