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Metal Saddle standoff for wood columns in exterior envronment

Metal Saddle standoff for wood columns in exterior envronment

Metal Saddle standoff for wood columns in exterior envronment

(OP)
Is there an NBC or CSA Code requirement that wood columns in an exterior environment have a metal standoff saddleat the base, and if so does this requirement apply even if the post is pressure treated against decay?

RE: Metal Saddle standoff for wood columns in exterior envronment

I don't know of the code requirement but I commonly see a 4" standoff.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

RE: Metal Saddle standoff for wood columns in exterior envronment

ajk1,

I'm not sure about the NBC or CSA codes, but for IBC its Check IBC 2304.11.2.7 Posts and columns (I'm using IBC 2009 for the reference). It refers to protection against decay and termites for Wood posts or columns. I bet if you google this section and cross check it with the above you might be able to find something. For the IBC it's my understanding that standoffs are only required if the wood is not preservative treated.

Nick

RE: Metal Saddle standoff for wood columns in exterior envronment

(OP)
Thanks Nick. I will try to check that out. That is very helpful.

RE: Metal Saddle standoff for wood columns in exterior envronment

I would still keep any soil a minimum of 6" from the wood column, treated or not. Just my practice here.

I would also install a layer of building paper between any concrete and the wood without a metal standoff.

Simpson CB post bases work well.

Mike McCann, PE, SE (WA)


RE: Metal Saddle standoff for wood columns in exterior envronment

(OP)
yes ok, thanks. There is at least 8" from top of soil to post bottom, and in most cases more.

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