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Re: Re: Canvas patio covers and the code?[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Re: Canvas patio covers and the code?
- From: ErnieNSE(--nospam--at)aol.com
- Date: Mon, 31 Aug 1998 14:45:19 EDT
I checked UBC97Vol1AppendixChap33DivIII-PatioCovers. It says:"Patio covers shall be used only for recreational, outdoor living purposes......." First, I check what the patio is gonna be used for. Some architect or owner may call it a patio but it is being used the same as the building's occupancy. For example, a restaurant patio, which is used for dining, the regular use of the building. For me, it does not matter what they call it or what material it is made of(concrete, steel, wood canvas, paper, plastic,etc) I design the cover and structural frame for the required design load for a regular restaurant building. For covers that cannot carry design live loads(such as canvas, etc), I design the frame for an equivalent load due to some worker installing or maintaining the material(similar to the design load requirements for greenhouse framing). I design the frame for full wind load on the canvas, all directions. Entry awnings for commecial buildings should be designed the same way. Even if it is not strictly used the same way as the building, people using the building will pass under it and should it be subjected to the same safety standard. Regarding Div II-Membrane Structures, it says:" All membrane structures shall be structurally designed in accordance with criteria approved by the building official and developed by an engineer or architect.............." So, there is still nothing specific in terms of design load requirements and it is still up to the engineer's judgement. Ernie Natividad
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