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MisterSteve 10-21-2012 03:31 PM

Deck beam to post connection
Does anyone know how much of a beam must be resting on a support post? I will have 3 beams, each one being 2-2x10s and intersecting at one 8 x 8 post. Two of the beams will rest at a 90 degree angle and the third will rest at 45 degree angle at the point of the other two beams. I will post a pic of a mock up i made.

joecaption 10-21-2012 04:08 PM

What are these beams holding up.
Without a picture were lost.

GBrackins 10-21-2012 05:21 PM


this link will provide you the American Wood Council's "Prescriptive Residential Wood Deck Construction Guide." The information contained is based upon the 2009 International Residential Code, the basis for most local/state building codes.

As far as bearing requirements here is what the 2009 IRC requires:

R502.6 Bearing. The ends of each joist, beam or girder shall have not less than 1.5 inches (38 mm) of bearing on wood or metal and not less than 3 inches (76 mm) on masonry or concrete except where supported on a 1-inch-by-4-inch (25.4 mm by 102 mm) ribbon strip and nailed to the adjacent stud or by the use of approved joist hangers.

typically I bear my beams fully on columns.

Good luck! :thumbsup:

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