<![CDATA[The progress of development in Indonesia is very rapid, building materials are demanded to have very good quality. The purpose of this study is to determine the comparison of the compressive strength of red brick and lightweight brick as it should be in the field of development that affects economic development, in this study it is very useful for the community when buying materials. This type of research is qualitative. The data was obtained by conducting research on data analysis techniques. used is to use a formula to determine the value of compressive strength. The results showed that red bricks and light bricks had different compressive strength values. Lightweight bricks which are heated in the sun for 7 days have a compressive strength value of 58.916 kg/cm², while those that are soaked in water for 4 days have a compressive strength value of 36.256 kg/cm² and those which are blown in the wind for 28 days have a compressive strength value of 45.32 kg/cm². cm². for red bricks that are dried for 5 days and then burned for 1 day. after the red bricks are ripe and then heated in the sun for 7 days has a compressive strength value of 33,709 kg/cm² while those that are soaked for 4 days have a compressive strength value of 29,495 kg/cm² and those that are ventilated for 28 days have a compressive strength value of 25,281 kg/cm².]]>
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