Desing of Purlin to AS4600

[steelnz2003]

Hi
I am trying to desing a purlin using the AS4600 I for a diffrent results than the Prulin manufacture specially for diffrent bracing length
I got teh section capacity correct but the issue witht the reduction of capcity to member length does any one know a sloved example or commetry to explain the used numbers

 

[hokie66]

The published purlin capacity tables are based largely on full scale testing. Those results are superior to any computed capacities, in my opinion.

 

[steelnz2003]

hokie66 (Structural)
Yes you are defiantly wright I end up to same results but why they do not state this in their data sheets to save time of checking and they should also provide a way for specific design

 

[hokie66]

The Lysaght design manuals do state that the capacities are based on full scale testing, done at Sydney University.

http://professionals.lysaght.com/sites/default/files/LysaghtZedCeesPart1July2014.pdf