Current through Register Vol. 41, No. 8, December 2, 2024
Section 4VAC25-40-2890 - Torque test requirementsWhen 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; and4. 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.4 Va. Admin. Code § 25-40-2890
Derived from VR480-05-1.2 § 15.13, eff. July 19, 1989.Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code of Virginia.