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Old 02-18-2013, 07:21 PM   #1
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Spans and Footings for deck


Hello, probably an easy question for someone who builds decks for a living. I want to build a 16x16 deck that is not attached to the house. It will be about 3-4' off the ground and I would like 2' overhangs on both ends of the joists off of the main support beams. Can someone help me with this county code website
http://resources.baltimorecountymd.g...conpkt1207.pdf
to size my beams and footers (how many and what size). For reference I will be using 2x10 joists since cost is minimal over 2x8.

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Old 02-18-2013, 07:43 PM   #2
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Spans and Footings for deck


after looking at there web site it is not clear on beam support over 12 long joists. so what i would propose to them is a 2x12 on each side of the 4x4 post on 18 dia. or 16 square pad with the 2 x 10 rest on top of them with the 2 foot hangover on each side which should put you inside their span charts

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Last edited by jaydevries; 02-18-2013 at 07:47 PM.
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Old 02-18-2013, 08:12 PM   #3
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Spans and Footings for deck


Thanks for the response. Glad I'm not the only one who thinks their chart is lacking. It also doesn't give specs for a freestanding deck.

I wanted to add I'm using 6x6 posts. Not 4x4. I believe I can get away with 2 doubled 2x12 for my main beams. One beam 2' in on each side.

I also was surprised to see the size footers I'm going to have to dig.
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Old 02-18-2013, 08:21 PM   #4
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Spans and Footings for deck


Good plan to go with 6 X 6's. Cut into the sides of the 6 X 6's not just attach on the sides.
Double 1/2 through bolt bolt not just nails.
Only use ACQ approved fastners!
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