The file name is RIB. This program computes the maximum thrust and maximum moment in a steel tunnel support, or rib having a constant radius and selects the appropriate steel member. The method of analysis used is that given by Commercial Shearing and Stamping Co. in its book, "Rock Tunneling With Steel Supports", by Proctor and White. The input required is the radius of the rib, width of tunnel, assumed overbreak, assumed blocking point spacing, rock loading and rib spacing. The output consists of the following: Vertical Rock Load at each Blocking Point, Maximum Thrust, Moment, the steel W section to be used for rib, the length of the rib, and total weight of steel required for ribs for the particular length of design in question.

  • Corporate Authors:

    New York City Transit Authority

    370 Jay Street
    Brooklyn, NY  United States  11201
  • Authors:
    • Kadnar, P
  • Publication Date: 1974

Subject/Index Terms

Filing Info

  • Accession Number: 00098750
  • Record Type: Publication
  • Source Agency: American Railway Engineering Association
  • Files: TRIS
  • Created Date: Aug 27 1981 12:00AM