Chapter 2: physical architecture. INSULATION FOR CONSTRUCTION: Choose the material cover, heat transfer through the wall: According to the requirements for roof and outer wall of the works specified in the national technical regulation on buildings to use energy efficient (QCVN 9:2013/BXD), then all the walls sheathed on the ground (the walls are not transparent) must have the value of the largest thermal transmission U _ (0 , max) not greater than the total heat value or small return for R _ (0, min) not smaller than the value specified in the table below:
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