Building and Construction - Post and Beam Layout for large deck

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Post and Beam Layout for large deck

exatxer@gmail.com

2007-02-25, 5:25 pm

I am building a 20' by 34' deck. One of the 34' sides will be against
the house. Joists will run with the house.The deck will be 8' off the
ground on 6x6 posts, joists on 12" centers. From What i have
researched, I could use 2x12's with one 3-2x12 beam in the center,
leaving 17' 2x12's on each side.

Or, I could use 2x10's, 2 3-2x10 beams with 2 12ft spans and a 10ft
span.

I am having trouble figuring out how far apart my posts can be aroud
the outside edge of the deck.

Also, any suggestions on going with 2x12's and a long span verses
2x10's and a shorter span. I have drawings I can send.

Thank You,
Jim

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