Structural Steel Roof Truss Design Example

Instructional material complementing fema 1051 design examples.

Structural steel roof truss design example. In fact any wood truss design can now be competitively manufactured using steel elements. The engineering benefits of doing so are lighter weight and better resistance to rot insect damage and splitting. The aim of this post is to show the design example of a timber roof truss trussed rafter. Fy 36 ksi for structural steel astm a615 gr 40 for 3 4 gr 60 for 5 and larger rebar steel astm a53 gr.

Conceptual design of truss and column solutions ss050a en eu. Design examples steel structures 43. It does not include for example. Steel trusses are mainly used to build the strong base.

A commonly observed use of the triangular steel truss system is for electric grid power line distribution towers for example. Nehrp recommended provisions steel design context in provisions. Detailed design of trusses 5 7 figure 1 7 n truss also with n truss purlins 1 4 aspects of truss design for roof structure 1 4 1 truss or i beam for the same steel weight it is possible to get better performance in terms of resistance and stiffness with a truss than an i beam. Ce 331 fall 2010 example.

Design criteria and specifications. Resist lateral earthquake forces by truss action. This difference is more. Careful attention must be paid to design of structural members and connection details of trusses since their failure can be catastrophic both in terms of loss of life and economy.

Trusses can be customized according to the requirement and thus serve as a simplified way of roofing. Truss joist macmillan 2 0e parallam psl microllam beam. Structural shapes standard steel configurations produced by steel mills such as wide flanges channels angles pipe tubes etc. The photo below shows a truss girder painted gray supporting the roof of a gymnasium.

Design of roof trusses sn027a en eu. B for pipe. The most widespread alternative for roof construction in nigeria is the use of trusses of which timber and steel are the primary choice of materials. Roof truss analysis 1 6 in this example a parallel chord steel roof truss is analyzed for typical dead and roof live loads.

As a direct product of nature timber has so many variable properties that are more complex than that of concrete steel bricks or aluminium. Truss joist macmillan 1 9e microllam lvl. Roof diaphragm design shearwall design continuous footing design. Beams columns braces plate trusses and fasteners.

Joint design the steel alliance. Steel roof truss design example is evident in the major structures built across the globe. Single storey steel buildings part 5. Some of the characteristics which influence the structural behaviour of timber are.

Single span truss and post frame for a low pitch roof using battened section chords sx017a en eu.