GroundRules
4VAC25-40-2890: Torque test requirements
Where this section sits in the code
- Title 4. Conservation And Natural Resources
- Agency 25. Department of Energy
- Chapter 40. Safety and Health Regulations for Mineral Mining
- Part XV. Safety and Health Regulations—Underground Only
- Article 1. Ground Control
When installing point-anchor rock bolts:
1. A torque test shall be conducted on at least every fourth installed bolt;
2. Torque testing shall be conducted immediately after bolt installation;
3. If the recommended torque has not been achieved, the equipment used to install the bolt shall be adjusted and the next bolt installed shall then be tested; and
4. If the recommended torque has not been achieved on the majority of bolts installed in a working place through equipment adjustment, supplemental support equivalent to longer roof bolts with adequate anchorage, steel or wood sets, or cribs shall be installed.
Collected 2026-09-14T04:46:03Z. Source file · JSON