The basic knowledge of engineering graphics is necessary to understand the architectural structure diagram alone, and the main plane structure layout of the structural diagram; With standard atlas; Wall, column and beam table; General description of the structure; According to the names, codes and labels specified in the plane standard atlas (such as 03G 10 1 series), the local group reads out the positions (plane position and elevation) of each component in the plane structure layout; Find the wall, column and beam table, know the section size and reinforcement material grade of each component, find the general description of the structure, see the outline of joint structure and standard atlas, and know the linear significance of imaginary axis, longitudinal reinforcement, transverse reinforcement and contour line.