Abstract
The resistance of massive steel columns is significantly better than for ordinary steel columns because of their much smaller aspect ratio. Under full service load they can attain a fire resistance of greater than 30 minutes for an ISO DIS 834 fire without any fire protection, and more than 90 minutes with a thin intumescent coating. Results of numerical thermal, and load bearing analysis, material investigations, and fire tests are summarized for practical application in fire engineering.
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