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What is the maximum spacing between exterior deck boards?

thread179-280177

What is the maximum spacing between exterior deck boards?

What is the maximum spacing between exterior deck boards?

(OP)
I'm using dried 4x12 timber planks on steel framing to make a commercial boardwalk / deck.  I'm concerned that with timber shrinkage the gap between the planks might get too large.  BUT, I cannot find a standard or code anywhere that gives a maximum spacing.  Can anyone point me to a CODE or STANDARD for reference?   

RE: What is the maximum spacing between exterior deck boards?

Ask a carpenter for practical standard.  I would imagine they use about a thickness of a nail or so.  You should be able to figure expansion of the material.  I would say a gap of 1/8" should be about right.   

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