An equivalency is being developed for a building with unprotected steel W24x76 columns. Determine the fire endurance time (in minutes) for one of these columns W24x76 columns have an approximate flange and web thickness of 0.68 inches, and a flange width of 8.99 inches.
a. 4.3 minutes
b. 7.8 minutes
c. 9.7 minutes
d. 55.3 minutes
Solution | Posted 08/14/18
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