Existing Mezzanine Rating
Existing Mezzanine Rating
(OP)
I have been asked to provide a live load rating in psf of existing mezzanines in a manufacturing facility, I assume for insurance purposes. ASCE 11.1.2 says "Existing structures and alterations to existing structures need only comply with the seismic requirements of this standard where requried by Appendix 11B."
I believe the client is only looking for vertical loading rating, but not sure this is the only consideration that should be incorporated - i.e. seismic considerations.
Thoughts of whether seismic forces should be used in the evaluation of the ratings?
I believe the client is only looking for vertical loading rating, but not sure this is the only consideration that should be incorporated - i.e. seismic considerations.
Thoughts of whether seismic forces should be used in the evaluation of the ratings?






RE: Existing Mezzanine Rating
1. Meet the expectations of the client in terms of their need to satisfy their insurance company - i.e. gravity check to post live load capacities.
2. As an engineer - protect public safety and welfare and if you suspect there is no complete lateral load path for the mezzanine - inform them separately in a letter that you suspect (you don't positively know for sure) that there may be a problem with the lateral stability of the mezzanine and that you would recommend that they have it investigated further either by you or any competent structural engineer.
RE: Existing Mezzanine Rating