Structural Steel Roof Truss Design

Different steel roof truss designs are prepared depending upon the shape of the structure.

Structural steel roof truss design.

Light gage cold formed steel structural steel stainless steel and aluminum. Truss design estimating d e is a complete automated solution for the design of aluminum or cold formed steel truss building frames with either sloped or arched roof trusses. The skeletal structure of a roof system 18 0m long and 7 2m wide is as shown in figure below. It is desired to specify the appropriate angle sections that will safely carry the anticipated loading using eurocode design code specified steel grade s 275.

As a relatively new building material steel has become especially useful when incorporated into engineered steel trusses and steel plate connected timber trusses. When a roof is to be provided for a building which does not have interior supports and the exterior walls are more than 12 m apart a roof truss will be a convenient arrangement to support the roof. Top general geometry for efficient structural performance the ratio of span to truss depth should be chosen in the range 10 to 15. For many single storey buildings sloping roofs on trusses are common.

Components of a steel roof truss. After that the external load is to be estimated including the self load of the truss. Design of roof truss should follow the general layout that is prepared first. An advantage of the truss design for roofs is that ducts and pipes that are required for operation of the buildings services can be installed through the truss web i e.

Attempts were made in the 17th and 18th centuries to use iron as reinforcing and structural members especially in bridge design for railroads and other heavy load applications.