在建筑结构设计中,现行规范是不考虑建筑材料造价的,这样设计出的结构不能达到最经济。这里拟以单筋矩形截面受弯构件为例,当其考虑建材造价时,对影响抗弯强度的主要因素——梁高的计算加以推导。由公式 In the design of building structure, the current standard does not consider the cost of building materials, so the structure can not be designed to achieve the most economical. Here to be single-rib rectangular cross-section of flexural members, for example, when considering the cost of building materials, the main factors that affect the flexural strength - beam height calculation to be deduced. By the formula