i have a steel platform with grating with no horizontal brace. see attached for partial plan.
unbraced length of this i set as total L for new structure or i add horizontal brace.
but this is existing and i dont want to retrofit this if not necessary. any chance this can work out as L/8. i've read about 2% flange force and also grating might help.
looking for some clarification.
my biggest worry is original engineer (this is a very old structure) might have considered L/8 as unbraced length for the beam which will cause them to fail in my new analysis if i consider total L.
thanks,
unbraced length of this i set as total L for new structure or i add horizontal brace.
but this is existing and i dont want to retrofit this if not necessary. any chance this can work out as L/8. i've read about 2% flange force and also grating might help.
looking for some clarification.
my biggest worry is original engineer (this is a very old structure) might have considered L/8 as unbraced length for the beam which will cause them to fail in my new analysis if i consider total L.
thanks,