steel truss

The main difference between steel roof truss and steel truss

It is formed by steel truss manufacture after the shape of a triangular shape; and the steel truss manufacture which is the shape of the ends are basically the same, except for the roof, sometimes it is also a bridge in this way.
The beam truss can be seen as the beam evolution, and the internal forces of the same span beam and the common beam truss under the same uniform load are as follows. The shape of the truss has a great influence on the internal force distribution of the member. The internal force of chord of parallel chord truss decreases from middle to back, while the internal force of chord of triangular truss increases from middle to back.