SUMMARY MUSTIKA JONI, 1710246320, NUMERICAL ANALYSIS OF LIGHTWEIGHT BRICK DUE TO HIGH TEMPERATURE USING LUSAS V.19, supervised by Reni Suryanita and Harnedi Maizir. The use of a material greatly affects the thermal comfort of the building, so that the use of light brick material is recommended in the tropical climate. Therefore, it is necessary to carry out a Numerical Analysis of the the…