Roof Truss Stress Analysis

Weight psf 20 ga metal deck 2 5 waterproof membrane with gravel 5 5.

Roof truss stress analysis. We know the basics of equilibrium of bodies. This lecture offers a review of the method of joints for analyzing a determinate roof truss. Service class of roof truss. The calculations made are based on splitting the member into 10 smaller elements and calculating the internal forces based on these.

In this free version of 2d truss analysis you can t perform dynamic analysis which contains graphical analysis of designed structure. We will now discuss the trusses that are used in making stable load bearing structures. The objective of truss analysis is to determine the reactions and member forces. The truss analysis is being performed by our fea solver which is also used in our structural 3d program.

Method of joints for truss analysis. Stresses in roof trusses in designing roof trusses two stress and two frame diagrams are generally drawn one of each for the dead loads which act vertically and the others for wind loads usually taken as normal to the slope. Internal forces and stress along members. The analytical and computational method of the roof structures are presented.

Load analysis i dead loads on rafter top chord self weight of long span aluminium roofing sheet 0 55mm gauge thickness 0 019 kn m 2 weight of purlin assume 50mm x 50mm african mahogany hardwood timber. The methods used for carrying out the analysis with the equations of equilibrium and by considering only parts of the structure through analyzing its free body diagram to solve the unknowns. Then the computational method is used for the solution of the same problems. At the beginning the analytical method is used for determination of values of external supports axial forces and principal stresses in truss.

Learn truss analysis methods with examples. Analysis of truss by the methods of joints and by the methods of section is explained in the article. Also you can t save your work and modify material section etc. Permanent dead loads self weight of long span aluminium roofing sheet 0 55mm gauge thickness 0 019 kn m 2 weight of ceiling adopt 10mm insulation fibre board 0 077 kn m 2 weight of services 0 1 kn m 2.

For additional information visit. The values for internal forces and stresses for each individual member are displayed. The truss solver can handle extremely large structures of more than 10 000 members.