BajaNomad

Earthbag homes

Bendrix11 - 7-1-2015 at 08:15 AM

I already posted this topic in the building forum, however I think I may get more feedback here at Q & A. So anyway, I've been looking into these things recently and would be interested to know if anyone has an experience or knows of anyone who has built one of these things (particularly in the La Paz/Todos Santos region...)

Many thanks in advance.

chippy - 7-1-2015 at 10:10 AM

Why build one? There must be thousands of dirt bag homes on the market.

Higo - 7-22-2015 at 08:25 PM

I saw an earthbag home from a boat on the coast near El Cardonal. I googled it and found this blog/website. Might be worth contacting the owner for the info.

http://casadelasdomas.com/Casa_de_las_Domas/Hootenanny_In_Ba...

Also, I've seen an earthbag place under construction north of Los Barriles on the hillside. Good luck. Earthbag construction is incredible!

dtbushpilot - 7-22-2015 at 09:12 PM

Welcome to Nomads Higo, thanks for your input.

mcfez - 7-23-2015 at 11:40 PM

https://calearth.org/
This type of construction was approved by the County of San Bernardino a while ago. The link I provided is a excellent starting point for discovery of this technology. Cal Earth is the founder of earth bag construction.

It's a perfect way to build a home in Baja. Lots of sand as the main material..... barbwire and a little bit of lumber. Best part of this is that any casual labor can help build a sandbag house.

Cal Earth has on site classes with accommodation for extended stays at their Mohave Desert complex.

In Pete's Camp.....8 miles north of San Felipe.....there is a perfect site to visit....as it is still under construction.

Pictures of various construction sites: http://tinyurl.com/pjlq5yx

Quote: Originally posted by Bendrix11  
I already posted this topic in the building forum, however I think I may get more feedback here at Q & A. So anyway, I've been looking into these things recently and would be interested to know if anyone has an experience or knows of anyone who has built one of these things (particularly in the La Paz/Todos Santos region...)

Many thanks in advance.




[Edited on 7-24-2015 by mcfez]

mtgoat666 - 7-24-2015 at 06:09 AM

The dirt bag homes don't look like they have any ability to withstand seismic shaking

mcfez - 7-24-2015 at 12:29 PM

Actually....they do...and got approved for seismic.

Quote: Originally posted by mtgoat666  
The dirt bag homes don't look like they have any ability to withstand seismic shaking

Bob and Susan - 7-24-2015 at 01:12 PM

Quote: Originally posted by mcfez  
Actually....they do...and got approved for seismic.

Quote: Originally posted by mtgoat666  
The dirt bag homes don't look like they have any ability to withstand seismic shaking


that's not exactly what their website says...
they're not "approved" but
one building site was

this experimental construction

my thought...(water and dirt)= disaster

mcfez - 7-24-2015 at 02:32 PM

Kind of like those adobe houses. right? Dirt/water :D

Approved. Not sure what pieces of the information you are taking.....but in the whole light...it clearly states approved....in many locations. Just like any other new engineering tech....one must provide additional data for planning approval. So......this IS a approved system.

"........The best example of code approval in seismic areas of California is the work done at CalEarth, near Hesperia. They have actually designed and helped construct an earthbag public building for the city, and the system was required to undergo extensive testing to be sanctioned by the authorities. Since then they have sold similar designs for complex dome structures that have been code approved in various other states".

Details on various stress tests:
http://www.earthbagbuilding.com/testing.htm



taos pueblo.0.jpg - 24kB



[Edited on 7-24-2015 by mcfez]

bledito - 7-24-2015 at 03:20 PM

using earth bags alone with out support structure appears that single story is about the limit.

Bob and Susan - 7-24-2015 at 04:45 PM

I actually like the designs but all the pictures of this stuff shows un-finished houses...

I wonder how many people finish...it only takes 10 weeks...but...it looks like the houses are NEVER done.

today I took a sock out back and filled it with dry dirt...
I then tied the end
then I put the hose to it...wow...what a muddy mess

mcfez - 7-24-2015 at 07:21 PM


http://www.facepunch.com/showthread.php?t=1287410

Three man crew.

It's actually an concept that you should research. It seems that the resort you have built down there....this concept would be great for your site. You do have sand, right :-)

Before washing that ol sock out.....use plaster to the exterior. Good discussion, txs.

Quote: Originally posted by Bob and Susan  
I actually like the designs but all the pictures of this stuff shows un-finished houses...

I wonder how many people finish...it only takes 10 weeks...but...it looks like the houses are NEVER done.

today I took a sock out back and filled it with dry dirt...
I then tied the end
then I put the hose to it...wow...what a muddy mess


[Edited on 7-25-2015 by mcfez]

Bob and Susan - 7-25-2015 at 04:36 AM

I agree plaster but not a regular plaster...

regular plaster sucks in water...a lot

it would have to be a hardened plaster with a sealer in it...
AND
use the paper with chicken wire for a scratch coat before the plaster
AND
if you do that i'd stay with conventional block and castillos because the population understands this

I like the idea and the weird designs but acceptance might a problem for later sales

I wonder what the straw-bale houses look like now...
maybe cracked and crumbly and moldy

this time im not "in"
not proven yet and too many "unfinished" projects

no need to reinvent the wheel in Baja...there's enough unfinished projects here now

Minor hijack

durrelllrobert - 7-25-2015 at 09:31 AM

Quote: Originally posted by mcfez  
https://calearth.org/
This type of construction was approved by the County of San Bernardino a while ago. The link I provided is a excellent starting point for discovery of this technology. Cal Earth is the founder of earth bag construction.

It's a perfect way to build a home in Baja. Lots of sand as the main material..... barbwire and a little bit of lumber. Best part of this is that any casual labor can help build a sandbag house.

Cal Earth has on site classes with accommodation for extended stays at their Mohave Desert complex.

In Pete's Camp.....8 miles north of San Felipe.....there is a perfect site to visit....as it is still under construction.

Pictures of various construction sites: http://tinyurl.com/pjlq5yx


Back in 1970 I drew plans for a guy that had a cinder cone on his property just off highway 395 in Kern County. He set 8 foot long metal poles at 10 foot on center and stung barbedwire between them at 2 fooot intevals.. Then he built 2 foot high x 16" deep wooden forms on all sides. He also built and set wooden frames for all window and door openings as well as PVC electrical conduit.
Next he mixed 3 cubic yards of volcanic cinder with water and 1 shovel of cement and poured and tamped that in the forms on all 4 sides. After that mix had set he raised the forms another 2 feet and repeated the process until he reahed the top of the 8 foot walls, setting the window/door forms and PVC conduit in the right location as he went along.
After much debate the county of Kern approved those plans and the structure still stands today.
This option eliminates the need for baging sand.

mtgoat666 - 7-25-2015 at 09:47 AM

Quote: Originally posted by durrelllrobert  
Quote: Originally posted by mcfez  
https://calearth.org/
This type of construction was approved by the County of San Bernardino a while ago. The link I provided is a excellent starting point for discovery of this technology. Cal Earth is the founder of earth bag construction.

It's a perfect way to build a home in Baja. Lots of sand as the main material..... barbwire and a little bit of lumber. Best part of this is that any casual labor can help build a sandbag house.

Cal Earth has on site classes with accommodation for extended stays at their Mohave Desert complex.

In Pete's Camp.....8 miles north of San Felipe.....there is a perfect site to visit....as it is still under construction.

Pictures of various construction sites: http://tinyurl.com/pjlq5yx


Back in 1970 I drew plans for a guy that had a cinder cone on his property just off highway 395 in Kern County. He set 8 foot long metal poles at 10 foot on center and stung barbedwire between them at 2 fooot intevals.. Then he built 2 foot high x 16" deep wooden forms on all sides. He also built and set wooden frames for all window and door openings as well as PVC electrical conduit.
Next he mixed 3 cubic yards of volcanic cinder with water and 1 shovel of cement and poured and tamped that in the forms on all 4 sides. After that mix had set he raised the forms another 2 feet and repeated the process until he reahed the top of the 8 foot walls, setting the window/door forms and PVC conduit in the right location as he went along.
After much debate the county of Kern approved those plans and the structure still stands today.
This option eliminates the need for baging sand.


Look at most every large earthquake in the news. The poorly reinforced concrete and masonry buildings fall down.

You say the county approved it after much debate. The county probably just gave in and said "whatever" as they have no liability for homeowners foolishness. Also, in 1970 how advanced was the seismic engineering and CA bldg regs for houses?

[Edited on 7-25-2015 by mtgoat666]

BajaGlenn - 7-25-2015 at 10:37 AM


I filled enough sand bags in Viet Nam --I'll pass on earth bag home:?::?:

[Edited on 6-11-2015 by BajaGlenn]

mcfez - 7-25-2015 at 09:29 PM

Quote: Originally posted by mtgoat666  
Quote: Originally posted by durrelllrobert  
Quote: Originally posted by mcfez  
https://calearth.org/
This type of construction was approved by the County of San Bernardino a while ago. The link I provided is a excellent starting point for discovery of this technology. Cal Earth is the founder of earth bag construction.

It's a perfect way to build a home in Baja. Lots of sand as the main material..... barbwire and a little bit of lumber. Best part of this is that any casual labor can help build a sandbag house.

Cal Earth has on site classes with accommodation for extended stays at their Mohave Desert complex.

In Pete's Camp.....8 miles north of San Felipe.....there is a perfect site to visit....as it is still under construction.

Pictures of various construction sites: http://tinyurl.com/pjlq5yx


Back in 1970 I drew plans for a guy that had a cinder cone on his property just off highway 395 in Kern County. He set 8 foot long metal poles at 10 foot on center and stung barbedwire between them at 2 fooot intevals.. Then he built 2 foot high x 16" deep wooden forms on all sides. He also built and set wooden frames for all window and door openings as well as PVC electrical conduit.
Next he mixed 3 cubic yards of volcanic cinder with water and 1 shovel of cement and poured and tamped that in the forms on all 4 sides. After that mix had set he raised the forms another 2 feet and repeated the process until he reahed the top of the 8 foot walls, setting the window/door forms and PVC conduit in the right location as he went along.
After much debate the county of Kern approved those plans and the structure still stands today.
This option eliminates the need for baging sand.


Look at most every large earthquake in the news. The poorly reinforced concrete and masonry buildings fall down.

You say the county approved it after much debate. The county probably just gave in and said "whatever" as they have no liability for homeowners foolishness. Also, in 1970 how advanced was the seismic engineering and CA bldg regs for houses?

[Edited on 7-25-2015 by mtgoat666]


Goat.....the city bought one :-)

"They have actually designed and helped construct an earthbag public building for the city, and the system was required to undergo extensive testing to be sanctioned by the authorities. "

mcfez - 7-25-2015 at 09:33 PM

Hell of a interesting tech. The problem with this paper concept is....there aint no paper in Baja! A lime paint coating is used....same stuff that they used to use on the eastern coast back in the early days.

http://www.instructables.com/id/Building-a-Dome-out-of-Paper...

Quote: Originally posted by Bob and Susan  
I agree plaster but not a regular plaster...

regular plaster sucks in water...a lot

it would have to be a hardened plaster with a sealer in it...
AND
use the paper with chicken wire for a scratch coat before the plaster
AND
if you do that i'd stay with conventional block and castillos because the population understands this

I like the idea and the weird designs but acceptance might a problem for later sales

I wonder what the straw-bale houses look like now...
maybe cracked and crumbly and moldy

this time im not "in"
not proven yet and too many "unfinished" projects

no need to reinvent the wheel in Baja...there's enough unfinished projects here now

mtnpop - 7-26-2015 at 04:44 PM

The old sodies that the settlers used in the 1800's in the plains states, some are still there,, big thick walls i think clay, straw or grass etc...
I have old school chums still living in the ones there family built a 100 years ago in the okie panhandle...
of course probably have never dealt with much of an earthquake...
Then there are some now called rammed earth homes... don't know much about that process...

monoloco - 7-26-2015 at 05:11 PM

Quote: Originally posted by mcfez  
Hell of a interesting tech. The problem with this paper concept is....there aint no paper in Baja! A lime paint coating is used....same stuff that they used to use on the eastern coast back in the early days.

http://www.instructables.com/id/Building-a-Dome-out-of-Paper...

Quote: Originally posted by Bob and Susan  
I agree plaster but not a regular plaster...

regular plaster sucks in water...a lot

it would have to be a hardened plaster with a sealer in it...
AND
use the paper with chicken wire for a scratch coat before the plaster
AND
if you do that i'd stay with conventional block and castillos because the population understands this

I like the idea and the weird designs but acceptance might a problem for later sales

I wonder what the straw-bale houses look like now...
maybe cracked and crumbly and moldy

this time im not "in"
not proven yet and too many "unfinished" projects

no need to reinvent the wheel in Baja...there's enough unfinished projects here now
For a good lime plaster, hot lime is needed, not the hydrated type they sell in bags but the kind that needs to be slaked. An emulsion made from cholla or nopal, chopped and soaked in water, is added.

Earthbag home

fire - 9-19-2018 at 03:45 AM

Hi there, I couldnt determine when your original post was made - however, I too want to build an earthbag home on my land in Baja.

I'd be interested in knowing what sort of info have you since dug up? (pardon the pun)

i am particularly interested in if you found where to source the poly bags needed for earthbag homes, and if you have completed your project.



Quote: Originally posted by Bendrix11  
I already posted this topic in the building forum, however I think I may get more feedback here at Q & A. So anyway, I've been looking into these things recently and would be interested to know if anyone has an experience or knows of anyone who has built one of these things (particularly in the La Paz/Todos Santos region...)

Many thanks in advance.

John Harper - 9-19-2018 at 08:37 AM

My buddy has a straw bale barn up in Eastern Washington. It's been up over 10 years and no problems that I've heard of.

John

TMW - 9-19-2018 at 09:31 AM

I thought some of the homes in El Dorado Ranch in San Felipe were made of straw and mud bails or something like that, similar to adobe.

wsdunc - 9-19-2018 at 11:44 AM

Fire:
https://www.calearth.org/shop/
they sell the bags. We visited 10 years ago, nice folks, lots of info.

joerover - 9-19-2018 at 12:00 PM

Quote: Originally posted by wsdunc  
Fire:
https://www.calearth.org/shop/
they sell the bags. We visited 10 years ago, nice folks, lots of info.


How about a behive hut,
https://en.wikipedia.org/wiki/Cloch%C3%A1n

daveB - 9-19-2018 at 07:36 PM

In 2004 there was a sizable earthquake off the coast of Colima, Mexico.
The following year we toured the city, saw many strangely empty lots. Even the church was still closed, after suffering damage. But those lots apparently, had adobe houses that had colapsed, the death toll in the city was over 50, and the collapse of those houses, mostly responsible.

Earthbag homes may be another thing, perhaps a big impovement on what had been built in Colima. Maybe, or maybe not.

fire - 9-19-2018 at 08:14 PM

I did a search about the differences between adobe construction and earth bag,

here is what I found

"Earthbag building currently lacks the same degree of testing and ease of code approval, yet I’m convinced, certain as one can be, that earthbag is stronger than adobe. For one, the soil is tamped, not just poured. This helps create a denser, stronger rammed wall that history has shown can last for hundreds or thousands of years. Plus, there’s the added strength of poly bags and barbed wire, which add significant tensile strength. The barbs are embedded in the densely packed soil between each course, as well as hooked on the bags themselves. In addition, if builders follow our recommendations about size and spacing of openings, plaster, bond beams, etc. then earthbag buildings will be extremely strong – far stronger, in my opinion, than the mass produced housing being built today."

http://www.naturalbuildingblog.com/earthbag-in-comparison-to...

mtgoat666 - 9-19-2018 at 08:32 PM

Quote: Originally posted by fire  
I did a search about the differences between adobe construction and earth bag,

here is what I found

"Earthbag building currently lacks the same degree of testing and ease of code approval, yet I’m convinced, certain as one can be, that earthbag is stronger than adobe. For one, the soil is tamped, not just poured. This helps create a denser, stronger rammed wall that history has shown can last for hundreds or thousands of years. Plus, there’s the added strength of poly bags and barbed wire, which add significant tensile strength. The barbs are embedded in the densely packed soil between each course, as well as hooked on the bags themselves. In addition, if builders follow our recommendations about size and spacing of openings, plaster, bond beams, etc. then earthbag buildings will be extremely strong – far stronger, in my opinion, than the mass produced housing being built today."

http://www.naturalbuildingblog.com/earthbag-in-comparison-to...


Plastic bags and barbed wire! Brilliant!
Put that in your building permit application, apply a PE stamp (that’s what photoshop is for!), and bob’s your uncle! I am sure the county will issue you a building permit, how could they question your creative engineering?

Stickers - 9-19-2018 at 10:16 PM

One of these houses was built in West Los Angeles years ago. It was expensive, beautiful and stylish featured in the real estate magazine of the LA Times (I think). I used to drive by it regularly.

Then the earthquake hit (Northridge) which wasn’t too bad in West LA. As I drove the neighborhoods looking at damage it was mostly brick chimneys that were toast, all the homes looked OK except for one. The dirt house was gone, just a pile of rubble and I do mean a pile of rubble

fire - 9-19-2018 at 10:39 PM

Thanks, well I suppose reinforcing with re-bar, barbwire, and plaster will help
https://www.engineeringforchange.org/news/build-earthbag-str...
Quote: Originally posted by Stickers  
One of these houses was built in West Los Angeles years ago. It was expensive, beautiful and stylish featured in the real estate magazine of the LA Times (I think). I used to drive by it regularly.

Then the earthquake hit (Northridge) which wasn’t too bad in West LA. As I drove the neighborhoods looking at damage it was mostly brick chimneys that were toast, all the homes looked OK except for one. The dirt house was gone, just a pile of rubble and I do mean a pile of rubble

caj13 - 9-20-2018 at 11:41 AM

they showed some Gal building anearth bag in the Mohave on that "building of the grid" program, another one too on a different episode. both of em ended up looking like beehives.

for some people - it's obviously the bees knees.

for me, when I desided to build my own home, I had to choose between rammed earth, straw bale, SIPs panels etc, was not aware of earth bag, but would not have chosen it, dont want a round home with a cone shaped top! I chose ICF with SIPS panel Roof. I was never convinced of the permanance of some of the other options. !

Never looked back, House has held up perfectly, and is now showing a premium price on the market - because fire proof & earthquake "proof" and super energy efficient.

[Edited on 9-21-2018 by caj13]

John Harper - 9-20-2018 at 01:08 PM

Quote: Originally posted by fire  

"For one, the soil is tamped, not just poured. This helps create a denser, stronger rammed wall that history has shown can last for hundreds or thousands of years.


Historically, I think dirt was tamped between two solid rock walls, to help withstand siege engines. Not sure there were freestanding tamped walls that lasted hundreds of years. I guess adobe lasts a few centuries, perhaps tamped dirt too. Looks like most the adobe walls from the 18th century, unless protected, are gone.

I recall a video of a friend's that showed a house being built with earth packed old tires, not sure if that's still a way of doing it as well. In Baja, I'm sure the old tires would be easy to acquire.

John

[Edited on 9-21-2018 by John Harper]

Looking for earthbags

fire - 1-16-2019 at 07:32 PM

Quote: Originally posted by Bendrix11  
I already posted this topic in the building forum, however I think I may get more feedback here at Q & A. So anyway, I've been looking into these things recently and would be interested to know if anyone has an experience or knows of anyone who has built one of these things (particularly in the La Paz/Todos Santos region...)

Many thanks in advance.


Hi there, I am trying to source some earthbag sacs in Baja, the earthbag sacks on a roll would be preferable, know where I might be able to get these near cabo or la paz?

motoged - 1-16-2019 at 09:39 PM

A few years ago someone posted about building with that or similar technology around San Bartolo....don't remember a project follow-up.

fishbuck - 1-17-2019 at 08:00 AM

A house in my near my camp was made from adobe brick.
I watched.
He hired a laborer and bought special dirt.
They made a mold, mixed up the adobe, and made bricks.
I think he believed it would be cheaper than concrete block.
The house got finished and he lived in it for a few years.
He abandoned the house and it has sat empty since.
It's been for sale for a long time... cheap.
When I inquired to another neighbor he said :
"don't bother, it's a teardown.
He once thought it was worth $200,000. Because that was his 1st asking price...
Now it's worth the value of the lot minus demo costs.
Stick with conventional materials if you ever plan to sell it.