Fire Safety Science Digital Archive

The temperatures measured near the ceiling of a compartment containing a fire, and the radiation from the opening, have been used to calculate the temperatures within its walls. The comparison, between these calculated temperatures and those measured, suggests that one measurement of radiation from the opening is at least as accurate for determining temperatures within the brick structures tested, as are conventional measurements near the ceiling, although neither method is satisfactory once the flaming subsides. However, for the purpose of estimating the onset of structural damage the period after the flames begin to subside is of lesser importance than the earlier period and it may prove possible to disregard this deficiency in any practical application of these methods of estimating structural temperatures.