Abstract
To estimate the fire endurance of building elements, it is important to know the temperature history of them during fire exposure, but it is not so easy to solve this problem because of containing of non-liner elements.
Recently Mr. T. Z. Harmathy presented a numerical method to solve this problem. The author attempted to use an electric computer to solve one by same method assuming that the value of heat conductivity changes with temperature and containing water evaporates without moving to anywhere in the wall.
