OFR-40-74 Helix Pressure Gauge To Indicate Roof Bolt Loads
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 63
- File Size:
- 14155 KB
- Publication Date:
- Jan 1, 1974
Abstract
A Helix Pressure Gauge to Indicate roof bolt loads was designed, fabricated and field tested. The gauge indicated loads between 3,000 and 15,000 pounds with a ± ten per cent error. The coat of fabrication of the gauge was estimated to be $3.39 including an assumed overhead and profit per indicator for a series production of 5,000 unite. The unit can be read on a bolt to within ± 1,000 pounds load from a distance of twenty feet.
Citation
APA: (1974) OFR-40-74 Helix Pressure Gauge To Indicate Roof Bolt Loads
MLA: OFR-40-74 Helix Pressure Gauge To Indicate Roof Bolt Loads. The National Institute for Occupational Safety and Health (NIOSH), 1974.