In the detail structural steelwork, according to the problem of components in connection crashing at each other and the problem of the enough space of bolt installation, the paper expounds how to apply collision detection technology on steel structure designing software fast and effectively and then carries out reasonable test on component and node installation model. Based on bounding box and geometric data of objects in three-dimensional space obtained according to a certain rule, the paper deals with mutual relationship between spatial objects in the vector method and effectively solves the problem as well as finally programming collision detection model and bolt installation space test in the designing software of detail structural steelwork (STXT).

H-shaped steel members with sinusoidal web is a kind of steel components with sinusoidal wave's web. There are many advantages of high efficiency's carrying capacity, good economy, and usually used in light-weight buildings with portal frames. It is introduced the main functions of the program for designing structure with sinusoidal web members in STS software. Through some cases analysis, comparison of steel weight by the design of sinusoidal web and flat web components using in portal frames and crane beam, sinusoidal web's economy index is given in paper.

Gabled frame structure with mezzanine and conventional frame structure have differences on structural design. This paper mainly introduces the commonly design method and the main functions of PKPM series software using in gabled frame structure with mezzanine.