Win a copy of 5 Acres & a Dream this week in the Homestead forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources the cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • Anne Miller
  • Pearl Sutton
  • r ranson
  • Mike Haasl
  • James Freyr
stewards:
  • paul wheaton
  • Joylynn Hardesty
  • Burra Maluca
garden masters:
  • Steve Thorn
  • Greg Martin
gardeners:
  • Kate Downham
  • Jay Angler
  • thomas rubino

Rammed Earth as Footing?

 
Posts: 2
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I am planning a tiny house and would like to use RE for some of the walls - this would be in a rainy climate.

Is it possible to make the footings themselves from rammed earth or soil cement?  The walls they would be supporting would be 6-7 feet tall.  

Budget is almost non existent and having concrete delivered is quite expensive.  

 
gardener
Posts: 6575
Location: Arkansas - Zone 7B/8A stoney, sandy loam soil pH 6.5
1212
hugelkultur dog forest garden duck fish fungi hunting books chicken writing homestead
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
What about using dry stacked stones for your footing?

Footings are to support the entire weight of the building, that is their primary function.

Also you are going to need long enough over hangs to protect those walls from the rains.

Most people use gravel under stones for footings as far as I know.

 
Fred McGuire
Posts: 2
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I'd like to avoid bringing too much material to the site as it's on a small island.   Hoping to use soil on site with Portland cement.   And yes, large overhangs.   Also it's a high siesmic region.  
 
Bryant RedHawk
gardener
Posts: 6575
Location: Arkansas - Zone 7B/8A stoney, sandy loam soil pH 6.5
1212
hugelkultur dog forest garden duck fish fungi hunting books chicken writing homestead
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Earth mixed with Portland should work for a RE footing.

For seismic resilience you might want to look into captive sand as a base for the footing to move on in an event.
I am not certain but something like that might work to keep the shifting from toppling the building.
I know that in many places they use delrin disc so the building can "jiggle" with a quake and remain intact.
 
pollinator
Posts: 240
Location: Northern New Mexico, Zone 5b
8
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
In a rainy climate I would be very concerned with the rammed earth footings wicking moisture up the walls.  That could compromise the strength and promote mold.
 
Posts: 520
Location: Northern Germany (Zone 8a)
25
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
what about earthbags? you could put a moisture barrier underneath.


could you share more deatails on your building plans?

and welcome to the forums.
 
Surfs up space ponies, I'm making gravy without this lumpy, tiny ad:
Permaculture Technology Jamboree: June 29th-July 10th, 2020, Wheaton Labs
https://permies.com/wiki/permaculture-tech-2020
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!