Point Load




When a roof sheet deflects downwards under point load, the pan of the profile is placed under tension and the crest under compression, but in the adjacent continuous span, this condition reverses.
Metal is relatively strong under tension and weak under compression.  Because of this, excessive point load will cause failure by compression buckling of the rib.  Wherever possible, temporary point load such as roof traffic should be placed with the weight in the pan of the profile, so that the load is shared by the two adjacent ribs, across two ribs, or at the purlin line. Permanent point load should be placed across multiple ribs.




Clause Number: 
Revision Category: 
0 - Clause Removed
Revision Detail: 

This clause has been removed as part of the overall revision of Structure. Instead of two clauses, there is now only one dealing with Point Load.

Draft Clause: