Bicycle-Safe Grate Inlets Study Volume 1 - Hydraulic and Safety Characteristics of Selected Grate Inlets on Continuous Grades

Details

• Creators:
  Burgi, P. H. ; Gober, D. E.
• Corporate Creators:
  United States. Bureau of Reclamation. Engineering and Research Center
• Contributors:
  Woo, Dah-Cheng
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Grates
  • Culvert inlets
  • Runoff
  • Bicycle safety
• Publication/ Report Number:
  FHWA-RD-77-24
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Contracting Officer:
  Woo, D.C.
• Corporate Publisher:
  United States. Department of Transportation. Federal Highway Administration
• Abstract:
  Eleven drain inlet grates were tested to evaluate their safety characteristics for bicycle as well as pedestrian traffic. Four of the grates that rated highest were selected for hydraulic testing. Three other grates with designs and bar spacings similar to grates proven safe were also selected for hydraulic testing. Test results show that two of the grate designs (a cast and a steel fabricated grate) are nearly as hydraulically efficient as the parallel bar grate and considerably more efficient than the other grate designs tested. One other design (a steel fabricated grate) shows high hydraulic efficiencies at longitudinal slopes up to 6 percent. These three grate designs are recommended for additional testing. A grate's ability to handle debris without clogging was shown to be most dependent on the spacing of its longitudinal bars.
• Format:
  PDF
• Funding:
  PO-5-3-0166
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/67452/dot_67452_DS1.pdf
• File Type:
  [PDF - 13.19 MB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:f4d61ed0b555e3c7dd0dee41dc188ddc8d41ea5d2659a862ec8d4d1b255f5039aff53ceb70f0c5d5e1595027989cdd15fd7b43f8f42a19fda4deb232f90c2482