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Old 04-15-2011, 09:29 AM   #1
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Should I use 2x8 or 2x10 for deck construction?


Hey guys,

I am going to start building my deck and have done several designs online. My deck will be 16 x 16 attached to the house (2x12 ledger board). The online design program I am using has 8 footings to be poured (2 are for the stairs). My question is can I use 2x10s instead of 2x8s and get rid of 3 footings (or should I stay with the original design? I will have to move my stair footings closer to the house to support where the stairs come down ( 5 footings instead of 8?). Thanks for any info provided!
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Old 04-15-2011, 09:44 AM   #2
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Should I use 2x8 or 2x10 for deck construction?


From your pictures (don't know the exact scale or dimensions) -
between the beam on the left, and how far the cantilever past that beam is -
the length of the cantilevered joists is too long.
It looks like 3 feet or longer.
If you're talking about using 2 X 8's or 2 X 10's for your beams - 2 X 10's.
Others will add some input.

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Old 04-15-2011, 09:53 AM   #3
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Should I use 2x8 or 2x10 for deck construction?


Quote:
Originally Posted by rossfingal View Post
the length of the cantilevered joists is too long.
Pretty sure that’s where the house goes.
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Old 04-15-2011, 09:55 AM   #4
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Should I use 2x8 or 2x10 for deck construction?


With 2x10 joists 16 OC the max span is 13'7" so if you put the beam at 13' you would have 3' over cantilever. it works according to the the residential deck guide.
With that said, I'd go 2x8 as you have illustrated with a beam in the middle. It will be stiffer.
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Old 04-15-2011, 09:59 AM   #5
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Should I use 2x8 or 2x10 for deck construction?


Oops! Thanks!

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Old 04-15-2011, 10:54 AM   #6
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Should I use 2x8 or 2x10 for deck construction?


I agree with Clutch. They'll be too much bounce with 2x10's and only one set of supports.
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Old 04-15-2011, 11:31 AM   #7
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Should I use 2x8 or 2x10 for deck construction?


Thanks guys! I guess I will just have a little more digging to do
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Old 04-15-2011, 05:48 PM   #8
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Should I use 2x8 or 2x10 for deck construction?


Really?....I do 13', 2x10 spans all the time and have never had a complaint that the floor was too "bouncy". As I see it he only needs support to carry the landing at the top of the stairs.

Enlighten me.
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Old 04-15-2011, 08:09 PM   #9
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Should I use 2x8 or 2x10 for deck construction?


Rent a power auger for the digging. You won't care how many you need to dig. Best $40 I spent when I built my deck.
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Old 04-16-2011, 06:47 AM   #10
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Should I use 2x8 or 2x10 for deck construction?


...after sleeping on it, I feel I should clarify my earlier reponse.

While 2x10's spanned 13' are within allowable tolerances there is no question that they'll have more bounce than 2x8's with half the span.
Considering the top of the stairs need to be supported, it does make sense to run that support all the way accross to halve the span.

Next time I need to think a lttle more before I blow out a response.
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Old 04-16-2011, 11:49 PM   #11
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Should I use 2x8 or 2x10 for deck construction?


Dan, this may help you; http://www.lancova.com/deckinfo.pdf

'09 update; http://www.awc.org/Publications/DCA/...eckarticle.pdf

At least change the beams drawn. Too fuzzy to see the rest, or too old....

Gary
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Old 04-17-2011, 08:53 AM   #12
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Should I use 2x8 or 2x10 for deck construction?


[quote=12penny;630368
Next time I need to think a lttle more before I blow out a response.[/quote]
Oh man, does that mean we all have to do that now?
Maybe I should retink this post then?
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Old 04-17-2011, 09:35 AM   #13
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Should I use 2x8 or 2x10 for deck construction?


lol..

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