The load-span relation recommends the use of the metaltruss.
综合考虑到桥的跨度和载重的关系，钢架结构是最佳的选择。
2
M series pneumatic is mainly used for hot rivet joint of metal structure such as joint work on steel structure of boiler, container, Bridges, large girder and truss of automobile, etc.
系列气动铆钉机主要用于对金属的热铆，如锅炉、容器、桥梁、汽车大梁和桁架等钢结构上的铆接工作。
3
Secondly, we introduce two mainly ways of metal plate wood truss calculations: the first is from the code for design of timber structures, and the second is FEM.