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Wood Foundations

 
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Old 05-01-2019, 06:49 PM   #61
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Re: Wood Foundations


Well guys,to be quite frank with you,I'm not a huge fan of sticks and twigs buildings (look at my job description) I don't know of any solid masonry buildings built on wood foundations........do you guys ?

Additionally,read the articles I posted in this thread regarding fastener degradation,what good is a wood foundation held together with failing fasteners ?
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Old 05-01-2019, 06:54 PM   #62
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Re: Wood Foundations


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Well guys,to be quite frank with you,I'm not a huge fan of sticks and twigs buildings (look at my job description) I don't know of any solid masonry buildings built on wood foundations........do you guys ?

Additionally,read the articles I posted in this thread regarding fastener degradation,what good is a wood foundation held together with failing fasteners ?
You don't have to convince me Fred. We've been building with basements in this country a good long time. If wood was a suitable alternative, our parents generation and those before them would have done it long ago.
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Old 05-01-2019, 10:54 PM   #63
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Re: Wood Foundations


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Well shoot, I thought we were talking about the disposable homes we build in America. In 100 years it will be tore down... 😉

Sadly this could become a selling point.....ĒIt has a wood foundation!!! So itís easier to remove for a complete tear down!!!!!
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Old 05-02-2019, 07:37 AM   #64
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Re: Wood Foundations


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Well guys,to be quite frank with you,I'm not a huge fan of sticks and twigs buildings (look at my job description) I don't know of any solid masonry buildings built on wood foundations........do you guys ?
Lots of them. Wood was very common for deep foundations and is still used. Venice was built this way.
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Old 05-02-2019, 08:05 AM   #65
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Re: Wood Foundations


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You don't have to convince me Fred. We've been building with basements in this country a good long time. If wood was a suitable alternative, our parents generation and those before them would have done it long ago.
Except treated marine grade plywood wasn't available for most of that time. Untreated marine grade plywood started kicking in in the 1930s. Code adoption is pretty recent in the scheme of things.
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Old 05-02-2019, 08:08 AM   #66
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Re: Wood Foundations


One disadvantage for wood in foundations/basements is that the long term properties of wood will give you more creep and long term deflection.


Just a difference in basic material properties.


Arbitrarily filling all the cores in a masonry wall eliminates some of the values (insulation, access) of concrete masonry.
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Old 05-02-2019, 08:12 AM   #67
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Re: Wood Foundations


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Lots of them. Wood was very common for deep foundations and is still used. Venice was built this way.
And it is still sinking. So there's that.
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Old 05-02-2019, 08:14 AM   #68
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Re: Wood Foundations


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Except treated marine grade plywood wasn't available for most of that time. Untreated marine grade plywood started kicking in in the 1930s. Code adoption is pretty recent in the scheme of things.
That is a 100 years.
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Old 05-02-2019, 08:25 AM   #69
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Re: Wood Foundations


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And it is still sinking. So there's that.
Because it's on an aquifer. The layer that the pilings rest on is sinking.
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Old 05-02-2019, 08:34 AM   #70
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Re: Wood Foundations


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Because it's on an aquifer. The layer that the pilings rest on is sinking.
In other words, Venice is built on pilings, and it is sinking.
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Old 05-02-2019, 08:40 AM   #71
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Re: Wood Foundations


I just view all this as trade offs. I can go find plenty of foundation guys around here that build a great concrete basement / foundation. Plenty of concrete companies. It's a no brainer.

Go down to Dallas, and you aren't going to find many basements of any kind, if any. It's just too expensive and many sites are too flat to have decent site drainage.

I think wood won't be as forgiving of poor site drainage and similar issues. In the right location with the right site conditions I consider them viable. The bigger issue is having a builder that will get the details right.
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Old 05-02-2019, 08:46 AM   #72
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Re: Wood Foundations


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In other words, Venice is built on pilings, and it is sinking.
Yup, same as conventional concrete foundations in Phoenix, Tuscon, ...

Nice try, though.
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Old 05-02-2019, 08:57 AM   #73
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Re: Wood Foundations


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Yup, same as conventional concrete foundations in Phoenix, Tuscon, ...

Nice try, though.
heheheh, yeah, it's your example, and now you brought up another, equally ****ty one.
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Old 05-02-2019, 09:27 AM   #74
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Re: Wood Foundations


I agree with the trade offs. Like the majority of our building decisions, depends on building needs and site conditions, and then best building practices.
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Old 05-02-2019, 09:33 AM   #75
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Re: Wood Foundations


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heheheh, yeah, it's your example, and now you brought up another, equally ****ty one.
They're both excellent examples of subsidence. I get it, you don't *like* the idea of wood foundations and wouldn't build one. Fine with me. Code says it's acceptable, and so do I.
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Old 05-02-2019, 09:44 AM   #76
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Re: Wood Foundations


As an old contractor friend says quite often,"everybody gets to pick their own poison".


Like all things with codes,when you build to meet a minimum code,all you end up with is a minimum building,no matter the material.
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Old 05-02-2019, 09:52 AM   #77
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Re: Wood Foundations


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As an old contractor friend says quite often,"everybody gets to pick their own poison".


Like all things with codes,when you build to meet a minimum code,all you end up with is a minimum building,no matter the material.
And yet, plenty of buildings built below code have been perfectly good for a couple hundred years or more. That's the whole idea of the code, there are significant performance margins built in.

I don't see anyone putting in fireblocking in every 4' vertical....
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Old 05-02-2019, 10:03 AM   #78
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Re: Wood Foundations


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.

I don't see anyone putting in fireblocking in every 4' vertical....


Very true,most of the time,you only get to see it was not installed before drywall or plaster. After the fire,there may not be anything to look at.

As far as poured concrete foundations,I've posted many a time about the need /good practice, recommended by concrete groups stressing the need for control joints in them. I can count easily on one hand the times I've seen them used. There usage adds so much more to eliminate random cracks and water infiltration,two snafus that compromise the integrity of the structure and the happiness of the occupants.
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Old 05-02-2019, 11:19 AM   #79
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Re: Wood Foundations


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They're both excellent examples of subsidence. I get it, you don't *like* the idea of wood foundations and wouldn't build one. Fine with me. Code says it's acceptable, and so do I.
The topic is wood foundations, not subsidence.

Don't try and put words in my mouth.
Instead, try to speak from a first hand, practical viewpoint.
If you could do that, then there might be some value in your comments.

At this point, you've demonstrated only that you cannot discern the difference between wood foundations, pilings and cause/effect.
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Old 05-02-2019, 11:59 AM   #80
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Re: Wood Foundations


I actually get to have my say, critics or no.

As for wood foundations and pilings, pilings are used for foundations all the time. If they're wood pilings, it's a wood foundation. Simple stuff. It's how and where wood is used that makes a difference.

I think only a few here have worked with PT exterior plywood, marine plywood (no PT), and just plain old plywood with exterior rating in marine applications. That's some practical experience.

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