Rock Bolts – Solid Bar
| Physical Properties | Minimum | Typical |
|---|---|---|
| Yield Strength | 500MPa / 245kN | 550MPa / 260kN |
| Tensile Strength | 600MPa / 270kN | 650MPa / 305kN |
| Calculated Shear Strength | 173kN | 200kN |
| Elongation (After Fracture) | 16% | 19% |
| Mass Per Metre | 3.85kg |
| Bar Core Diameter | 25.0mm |
| Major Bar Diameter | 27.9mm max |
| Cross Sectional Area | 491mm² |
| Rolled Thread | - |
Key Features
- This bolt is hot rolled with deformations that form a coarse left hand thread (10mm pitch) over its entire length.
- The threadbar form provides good load transfer properties.
- The continuous thread provides a high flexibility in "fragile" ground and blasting conditions as the bolt can be readily re-tensioned.
- The threadbar bolt is normally used with resin anchors, but can be effectively used with cementitious grouts.
- Can be supplied with a pin nut drive system.
- Corrosion protection may be provided by hot dip galvanizing or alternative coating.
Installation Guide Lines
- 26-27mm hole diameters are preferred. If larger diameter holes are to be used, refer to "Posimix" bolts 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.
