规定了一系列数值，建筑构件和结构的尺寸规格应根据这些数值选择公差。其他标准，尤其是ISO 3443第1至4部分和ISO 4464中讨论了确定规定公差的依据。

Specifies a series of values from which tolerances shall be chosen for dimensional specification of building components and constructions. The basis for the determination of the tolerances to be specified is dealt with in other standards, especially ISO 3443 parts 1 to 4 and ISO 4464.