TENSILE LAP SPLIECES, PART 2: DESIGN RECOMMENDATIONS FOR RETAINING WALL SPLICES AND LARGE BAR SPLIECES

THIRTY-TWO FULL-SIZE BEAMS WERE TESTED WITH #5, #11, #14, AND #18 TENSION BAR SPLICES. THE NEEDED LAP SPLICE LENGTH IS SHOWN TO BE SUBJECTED TO A NEW VARIABLE COEFFICIENT DEFINED BY THE RATIO S'/C, THE RATIO OF THE NET WIDTH BETWEEN BARS TO THE CLEAR COVER. REVISED DESIGN EQUATIONS ARE RECOMMENDED FOR INCLUSION IN THE AASHO BRIDGE SPECIFICATIONS. TENTATIVE REQUIREMENTS FOR TIES OR SPIRALS OVER THE SPLICES ARE PRESENTED IN TERMS OF THE ADDED SPLICE STRESS. THE USE OF TRANSVERSE TIES WITH LARGE BAR SPLICES IS RECOMMENDED. THE CADWELD SPLICING OF #18 BARS, ON A SAMPLING BASIS, PROVED SATISFACTORY IN DEVELOPING FLEXURAL FAILURES. CRACK WIDTH PROBLEMS, AS IN THE #18 BAR-LAP SPLICES, COULD BE OF CONCERN IN SOME EXPOSURES. /AUTHOR/

• Corporate Authors:

  University of Texas, Austin

  Cockrell Hall
  Austin, TX  United States  78712

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Texas State Department of Highways & Public Transp

  11th and Brazos Streets
  Austin, TX  United States  78701
• Authors:
  • Fergusen, P M
  • Krishnaswamy, C N
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Beams; Bridges; Design; Equations; Performance based specifications; Railroad ties; Specifications; Splicing; Stresses
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215972
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Study No 113
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jan 31 1972 12:00AM