LOCATING THE CRITICAL FLEXURAL STRESS POINTS IN SINGLE AND DOUBLE DRAPED PRESTRESSED MEMBERS

For prestressed concrete members with draped tendons, a significant error may result when the service flexural stresses are computed only at 0.4L or 0.5L. A computer oriented method is presented which precisely locates the points of critical service stresses for a uniformly loaded, simple span member with one or two drape points. When double drapes are specified, the procedure calculates the optimum distance between draping points. Equations are presented which express the allowable serive loads as limited by the critical points. Flow charts are provided to facilitate modification of existing computer programs to include this technique. /Author/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08879672
• Corporate Authors:

  Prestressed Concrete Institute

  20 North Wacker Drive
  Chicago, IL  United States  60606
• Authors:
  • Mallett, M J
• Publication Date: 1976-8

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 82-95
• Serial:
  • PRECAST/PRESTRESSED CONCRETE INSTITUTE. JOURNAL
  • Volume: 21
  • Issue Number: 4
  • Publisher: Precast/Prestressed Concrete Institute
  • ISSN: 0887-9672

Subject/Index Terms

• TRT Terms: Bending stress; Bridge members; Calculation; Computer programs; Equations; Flexure; Flow charts; Length; Loads; Prestressed concrete; Tendons
• Uncontrolled Terms: Bridge spans; Computation
• Old TRIS Terms: Critical points; Flow charting
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00141511
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 17 1976 12:00AM