Brian Harris

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since Dec 31, 2013
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Recent posts by Brian Harris

Burra Maluca wrote:On permies we strongly discourage use of the word 'truth'



Tru dat yo'!



Sorry... irresistible.
10 years ago
What a great discussion.

I think we can confidently say that cob alone would be inadequate. So I've turned my thinking to hybrid designs: how would you "stick" interior cob to exterior straw bale?

If you could confidently link the two, then questions about load bearing abilities come to mind. And since I have a family I can't really move them into an experiment. Well, I could... but then they'd run away, write a book, and there'd be a documentary about dad's stupid house.

I'm not super pro or con anything so non-natural materials wouldn't be a deal breaker.

Maybe we need to have a 3 season cob home and a winter McMansion. Yeah... that'll do!
10 years ago
cob
>So YES you can use cob, but ask if you should, do you have the skill sets to use it properly, and is it the best choice for a region you are in compared to other vernacular architecture.

That's definitely me (in my relative infancy learning about this topic). I am taken with cob's aesthetic and cost. I think our right angle housing world offends my sensibilities (whatever the hell that means).

That said, I'm also pragmatic. So if it doesn't make sense (we're getting a -10 night coming up in the next few days) then I won't do it, and aesthetics be damned!

My thinking has changed a bit to a hybrid design where there's bale on the outside, but with the straw oriented vertically (some research suggesting a higher R-value in this orientation) and then 8-10 inches of cob inside.

More work? Definitely. But this is going to be our home for 3 (or more) decades and there are many other buildings on the site so it mitigates the urgency to some degree.

Again, my thinking (and knowledge) is pretty sophomoric at this stage and largely idealistic. Luckily my research/pragmatic side brings me to you lot!

So thanks, you lot!
Brian
11 years ago
cob
John,

I think I wanted the easy answer : yes or no. Your reply was much more thoughtful, informative, and ultimately helpful. It highlighted some problems with my thinking (I suspected I was quantifying a bit too much but oh we'll!)

Again, thanks so much. I appreciate it.
Brian
11 years ago
cob
Hello all! I need to borrow some brains. Anyone got one I can use for a moment?

I've read in SOOO many texts that cob isn't appropriate for areas with cold winters. And that's it. No description of what "cold" means. I suspect someone in Alaska finds 15 balmy while we'd be freezing.

So here's some data from my area. Heating is not a big concern - there's lots of timber on-site. But condensation is most definitely a concern since we'd be heating non-stop for at least 4 months.

The site location is not ideal: north side of a hill. I still don't have data on when the sun hits the site we're considering. But let's assume it's limited.

As a complete novice, the data coupled with the site location suggests that cob is not appropriate for this project - a 500 square foot home as primary residence.

- - - - - - - - - - - - -

Average Extreme Low: -5, -10
Sunny Days: 166 (Avg. 205)
Typical Cover: Overcast

Avg Lows:
Nov 33
Dec 23
Jan 17
Feb 20
March 28

Average Daily Temp:
Nov 42
Dec 31
Jan 26
Feb 28
Mar 37
11 years ago
cob