This paper discusses the calculation rules of the horizontal damp proof course in wall body, the mark size and construction size, the calculation length in wall foundation, the all-round foundation of the roof-beamless, the rectangular foundation, the cup-like foundation etc. 讨论了墙身水平防潮层(DPC)、标志尺寸与构造尺寸、基槽的计算长度、无梁式满堂基础、条形基础、杯形基础等的计算规则。