Posted by Robert on December 12, 2002 at 06:37:16:
In Reply to: Wood Deck Loads posted by ev bosque on December 09, 2002 at 13:07:25:
I would go with (4) 6X6" (go to 8X8 in the deck height is more than 12 feet) pressure treated columns on minimum 12" C.I.P. concrete piers resting on undisturbed subgrade at a depth below the local frost line. Use steel column anchors fastened to the concrete with 5/8" anchor bolts extending at least 12" into the Concrete Pier. Use a 4000 pound mix and #4 rebar would prevent future cracking in the pier. Since this is a second story deck use the 2X10's for joists and provide some diagonal bracing between the supporting columns and the joists/ring joists.
For a second story deck or any deck greater than 24" high you should shoot for 50 p.s.f load. There have been instances where decks have collapsed during large gatherings so more is better.
You should alway try to keep your joist spans to 15' or less between supporting beams.
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