单层钢结构工程钢屋架安装相关规定：
Relevant regulations for installation of steel roof truss of single-storey steel structure engineering:
1.单层钢结构工程钢屋架安装之前。应在柱顶部搭设操作平台。并检察安装屋架的纵横向轴线。如发现误差较大时，应在屋架安装前纠正。
1. Before the installation of steel roof truss of single-layer steel structure engineering. The operating platform shall be set up on the top of the column. Check the vertical and horizontal axes of the roof truss. If large error is found, it shall be corrected before the roof truss installation.
2.因为屋架的跨度、重量和安装高度不同.单层钢结构工程钢屋架安装时，可选用不同的起重机械和吊装方法。
2. Because the span, weight and installation height of the roof truss are different, different lifting machinery and lifting methods can be selected for the installation of the steel roof truss of single-layer steel structure engineering.
3.钢屋架可用自行起重机(尤其是履带式起重机)、塔式起重机和桅杆式起重机等进行安装。
3. The steel roof truss can be installed by self-propelled crane (especially crawler crane), tower crane and mast crane.
4.钢屋架多为悬空吊装。为使钢屋架在吊装时不致发生摇摆和其他构件碰撞。起吊前在钢屋架两端应绑扎溜绳，随吊随防松，以此保持其正确位置。
4. Steel roof trusses are mostly suspended. In order to prevent the steel roof truss from swinging and collision with other components during hoisting. Before lifting, the sliding rope shall be bound at both ends of the steel roof truss, and it shall be prevented from loosening while lifting, so as to maintain its correct position.
5.钢屋架的平面外稳定性较差，如果起重机械的起重*和起重壁长度允许，*好经扩大拼装后进行组合吊装，即在地面将两榀钢屋架及天窗架、檩条、支撑等拼装成整体，一次吊装。
5. The out-of-plane stability of the steel roof truss is poor. If the lifting * and the length of the lifting wall of the lifting machinery are allowed, * the combined lifting can be carried out after the expansion and assembly, that is, the two steel roof trusses and skylight frames, purlins, supports, etc. are assembled on the ground and hoisted at one time.