Hello,
I have been asked to review an aluminum walkway structure that was installed back in 2004. No one involved with the project at the time has any record of the approved shop drawings and the owner wants a structural certification in lieu of the missing drawings.
The now out-of-business...
I have a single story building with light gauge roof trusses (58'-8" span; 3/12 pitch; 4'-0" o.c.) bearing on a 12'-8" CMU wall. The FBC allowable deflection for the span would be 2.9" to 3.9" for LL or DL+LL respectively. I modeled a test light gauge truss and came up with a max deflection of...
