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Forum topic by MrRon posted 05-08-2016 05:25 PM 354 views 0 times favorited 5 replies Add to Favorites Watch
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MrRon

3926 posts in 2706 days


05-08-2016 05:25 PM

Dear fellow LJs; First off, I am 81, so I’m not up to much physical labor. I also have limited resources. I want to build a ground level deck on my property (8 acres). In an effort to minimize physical labor and money, I have designed a modular deck. Each module would be 10’ x 10’; all perimeter boards and joists would be 2×6 PT, SYP. Joists will be spaced 12” on center and attached to the perimeter boards with strong-ties. Deck boards will be 1×6. Each module will sit on 4 concrete piers, set into the ground a distance that will result in a “floating” appearance. I intend to start off with one module and add on with additional modules as money becomes available. The way I have designed the modules will minimize the amount of “heavy” labor I have to exert. I also intend to have my 15 year old grandson do much of the work under my supervision. That will give him some woodworking experience. I estimated the cost of each module to be $270. After I have placed all the modules, I will band it all with 2×8 boards. The following sketch illustrates my plan. What do you think of the construction? I used 10’ as the maximum allowable span for a 2×6. Note: The solid black squares are the concrete piers.


5 replies so far

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MrRon

3926 posts in 2706 days


#1 posted 05-08-2016 07:07 PM

Here is an additional sketch of one module.

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MrRon

3926 posts in 2706 days


#2 posted 05-08-2016 07:09 PM

Duplicate post.

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marshallLaw

8 posts in 262 days


#3 posted 05-08-2016 08:08 PM

The recommended max span for a 2×6’ is 7 ft; and a 2×8’ is 9 ft per building codes. I would suggest placing a support member in the middle of each module to provide support and prevent sagging.

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MrRon

3926 posts in 2706 days


#4 posted 05-08-2016 08:27 PM

Here is an additional sketch of one module.


The recommended max span for a 2×6 is 7 ft; and a 2×8 is 9 ft per building codes. I would suggest placing a support member in the middle of each module to provide support and prevent sagging.

- marshallLaw
According to my reference, a 2×6 SYP joist (#1 grade) is good for 10’-2” span when spaced on 12” centers. This is for a 50PSF live load + 10PSF dead load. A #2 grade is 9’-11” span and structural select is 10’-4” span.


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a1Jim

115202 posts in 3039 days


#5 posted 05-08-2016 08:57 PM

As a 30 year contractor I build lots of decks,I think the difference of opinion is that marshall may not be taking into account that your joist are 1’ OC, never the less I think I would still consider perhaps bringing the blocks inward to make the span a little over 8’ and or add center support as Marshall suggested just to eliminate bounce .I don’t think a 2×8 is sufficient for supports on top of the pier blocks,normally I use 4×6, particularly with that kind of span.Most deck,decking surfaces are at least 2×6” material then joist are only necessary 24” OC for wood tops. I’m not sure of what your plans are for connecting your joist to your rim joist is but I recommend 2×6 LRU26Z hangers.

-- http://artisticwoodstudio.com Custom furniture

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