Helix Pressure Gage to Indicate Roof Bolt Loads

Details

• Description:
  This report (Contract No. H0111556) presents the results of a study to design, construct, and test a low-cost pressure gage to be used to monitor the change in load on individual roof bolts. The purpose of the gage is to offer a convenient means of estimating the stability of roof fall areas based on the premise that the load on individual roof bolts changes prior to failure. The gage indicated loads between 3,000 and 15,000 pounds with a +/-10 percent error. The unit can be read on a bolt to within +/-1,000 pounds load from a distance of 20 feet. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Open File Report
• Document Type:
  Text
• Genre:
  Conference Publications ; Final Contract Report
• Place as Subject:
  OSHA Region 3 ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DRC - Denver Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-58
• NIOSHTIC Number:
  nn:10000942
• NTIS Accession Number:
  PB-235272
• Citation:
  NTIS: PB/235-272 Available for Reference At Bureau Libraries; :1-58
• Federal Fiscal Year:
  1973
• Performing Organization:
  Virginia Polytechnic Inst.
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB/235-272; Available for Reference At Bureau Libraries
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:19703d5cfc684a7cd8f068902af62bbb5697c2ac870ae4abe3dd4452cec07815ec0a7a3d4be01810a835b0beb44d5e6d4631dae6509f1328aee0c2f6b55e49fc
• Download URL:
  https://stacks.cdc.gov/view/cdc/206481/cdc_206481_DS1.pdf
• File Type:
  [PDF - 1.00 MB ]