Home-made ThermoMass Concrete Poured Wall? - Building & Construction - Page 2 - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


Thread Tools Search this Thread
Display Modes
Old 12-09-2010, 06:07 PM   #16
Concrete & Masonry
Join Date: Nov 2008
Location: Wisconsin
Posts: 3,786
Rewards Points: 518

Dick, I believe (from a previous thread) that he's just using this for a frost wall with balanced fill on both sides. I agree though that the rebar design tying the two wythes together would be complicated, especially since they're not encased entirely in concrete.

BTW, keep pushing block foundations, I'm trying to hold off on buying poured wall forms as long as I can.........
jomama45 is offline   Reply With Quote
Sponsored Links
Old 12-09-2010, 08:06 PM   #17
Join Date: Dec 2008
Location: Fairbanks, AK
Posts: 1,941
Rewards Points: 1,188

Dick and Jo: Yes, this would be just a foundation wall, 4' high, on top of which will be a normal house, 2-story, 50 psf snow load, etc. Back-filled and compacted on both sides. I would be using the 40 psi XPS, unless I find out that a higher psi is needed. It SEEMED to me that ThermoMass has a pretty good idea here, and from their web site, fwiw, they build these of various sizes all over the show. I have no idea about wythe-to-wythe load transfers, etc, so I was rather counting on them to have worked all that out. Their pins are a different animal from rebar, but I did not see why #5 rebar would fail. But then, I am not an engineer. I can get ARXX blocks w/ a 10" core, too, and that would mean flaring each side one inch in the top course (my own form) to catch both 2x4 walls fully. With 2.5" of the 2x4 bearing on the solid 10" wall, I can not see how I could get into trouble. So, maybe just pouring a 10" ARXX wall with a tweaked top, or just say (insert whatever) and pour a solid 12" wall is the way to go. A 12" wall is 50% more spendy than the "normal" 8 inch, but that is life. Put a bunch of XPS on the outside, flash it, and sleep at night. Thanks for the thoughts. john
jklingel is offline   Reply With Quote
Sponsored Links

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Wall - LOAD BEARING: How to Move? user49172 Building & Construction 6 05-19-2017 04:53 PM
Need help with how to mount porch light to concrete foundation wall wherm5150 Electrical 7 11-16-2010 08:56 PM
Concrete wall shower mikalino Building & Construction 1 04-22-2010 05:59 AM
join poured concrete wall to CMU wall? walkman Building & Construction 1 10-01-2009 08:17 PM
Atlantic-need your opinion on markd's comments about my vapor barrier? yummy mummy Building & Construction 11 03-07-2007 09:47 AM

Top of Page | View New Posts