In steel construction, the steel columns are usually encased in concrete for fire protection. A concrete cover of 5 cm will provide at least two hours of fire protection. Recently, engineers have been concerned about utilizing concrete in addition to the steel section as an integral part of the column to withstand applied load. However, the ACI building code requires additional reinforcing bars in the design of such composite columns. In this research, composite columns without reinforcing steel bars were analyzed theoretically and tested experimentally. Six columns were tested with various cross-sectional dimensions and applied eccentricities. Results of the tests were in good agreement with the theoretical results. Therefore, composite steel sections encased in concrete, without reinforcing bars, were found reliable when subjected to normal static loads. By eliminating the requirements for additional reinforcing bars, the composite column becomes simpler and more economical. (Author/TRRL)

  • Corporate Authors:

    Iraq Scientific Research Foundation

    Building Research Center, PO Box 127
    Jadriya, Baghdad,   Iraq 
  • Authors:
    • Haris, AAK
  • Publication Date: 1978-12

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 29 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00334838
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Report/Paper Numbers: RP 53/78 Monograph
  • Files: ITRD, TRIS
  • Created Date: Sep 16 1981 12:00AM