Collateral or Live Load?
Collateral or Live Load?
(OP)
During the foundation design for a metal building, while extracting the reactions provided by the metal building company, i notice that they listed the mezzanine loads as "Collateral".
My understanding is that “Collateral Load” is the weight on the inside of the building acting as gravity. Examples of this are MEP; Mechanical, HVAC, Electrical, lighting, Plumbing, sprinkler system, etc.
Should'nt those mezzanine loads be listed as Live?
My understanding is that “Collateral Load” is the weight on the inside of the building acting as gravity. Examples of this are MEP; Mechanical, HVAC, Electrical, lighting, Plumbing, sprinkler system, etc.
Should'nt those mezzanine loads be listed as Live?






RE: Collateral or Live Load?
RE: Collateral or Live Load?
http://www.nucorbuildingsystems.com/Builder/engine...
BA
RE: Collateral or Live Load?
RE: Collateral or Live Load?
BA, within the article you provided, the author states, "Collateral loading values specified by the customer should contain the weights of items to be supported but not supplied by Nucor." The mezzanine on my project is, "...to be supported but not supplied by..." the metal building company. Therefore, i can understand why the metal building company may have listed it as collateral.
CANPRO, likewise, as you stated, there is no guarantee the mezzanine will always be there. That understanding brings up another topic regarding whether we or the metal building company should be expected to consider the future intents of the current or future owner(s) of the building. In this case, if that was the intent of the metal building company, they are apparently covering themselves for such worse case scenario.
CANPRO, the metal building company did not break the mezzanine loads into dead/live. It is simply listed: "C (includes mezzanine)". The metal building company does provide live load reactions, but, having inquired of this in the past, i've been informed that the live loads, unless specifically stated otherwise refer to roof live loads. I can also reason that the low magnitude of the provided live loads do not include the storage live load reactions.
RE: Collateral or Live Load?
Could their comment be that Collateral for roof = Collateral for Mezzanine floor =/= Mezzanine Live Load ???
RE: Collateral or Live Load?
Mezzanine loads should be split between dead and live loads, but in my opinion would not be generally thought of as collateral loads.