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Fire Test of a Steel Column of 8-in. H Section, Protected With 4-in. Solid Haydite Blocks

• ID:

  97

• ESCSI:

  3220.056

• Author:

  Harmathy, T.Z. and J.A.C. Blanchard

• Publication Name:

  Fire Study No. 6 of the Above Title

• Type of Publication:

  Paper

• Publisher:

  National Research Council (Canada), Division of Building Research

• Dated:

  1962

• Issue/Volume:

  February

• Other ID:

• Page(s):

  1-10 + figures

• Reference List:

  Y

• Abstract:

  This report describes a fire test conducted on a protected steel column. The test was requested by the Cooksville-Laprairie Brick Limited and was carried out on June 22, 1961.Haydite blocks said to be as manufactured by Cooksville-Laprairie Brick Limited and Argo Block Company Limited, were laid as fire protection for the steel section.
  According to the alternate test procedure prescribed for protected steel columns by ASTM E119-58 the column shall be judged as failed if the average temperature at any one of the four levels exceeds 1000°F or the temperature at any one of the measured points exceeds 1200° F. The 1000°F limited was first exceeded at the level of thermocouples Nos. 7, 8 and 9 at 4 hr 40 min. The 1200°F limit was not reached until the termination of the test which took place at 4 hr 51 min.
  Twenty-four hours after the completion of the fire test a few fine cracks became visible on the surface of the specimen. The condition of the specimen after the fire test is shown.
  According to ASTM E119-58 the fire endurance test is regarded as successful for a 4 hr period.