Should give you a basic idea. These values are based on the guidance provided by the American Wood Council.
Aug 25, 2010 Rating
New Interactive calculators coming by: Editor - Rich Bergman
If you can wait about 1 more week we will have a whole bunch of new interactive calculators being uploaded to the site. They are very useful and will help you for joist and beam spans, railings, balusters and even load capacity for footings.
I won an inflatable 6 person inter hot tub. I have a large deck. 12x 20 on both sides of the house. With a header to the house and the deck was built 6
I'm putting a swim spa into an inground concrete bunker and will build a deck around it. I have been advised to keep the deck joists a minimum of 6 inches