If you have a clay based subsoil (15-25% clay) you are in luck as your home’s raw material is below your feet. (You want the inorganic stuff down under the topsoil, no decomposing mulch and micro-organisms.) Mix your clay soil with some water, sand and straw. Mix with your feet, bare or booted, or with any number of mechanical mixers, or an oxen, or for a really large job, use a backhoe. See theilovecob websitefor multiple mixing methods.
Before beginning a project it is always a good idea to make a few large practice blocks and allow them to dry thoroughly. These test blocks will show you the best ratio of sand and straw that will work best with your clay soil.
Remember that cob has excellent thermal properties and moderates temperatures, but eventually heat or cold reaches the other side of the wall. Cob’s R value, even with extra straw, has never tested better than 1 R per inch, usually it tests much lower. In cold or hot climates you should consider building certain walls in a non-conductive, insulating material such as straw bale. Actually many in cold climates are building double framed walls, cob on the inside with an insulated wall on the outside.[1] A cob wall stores the heat or cold, an insulating material blocks heat or cold from passing through a wall.
Cob家正在建设中。
Originally found at eco-hobby.ru/2011/06/cob-house-i-pech-raketa/
密歇根的Cob键合梁。把棒子铲到地基上。用脚踩。The walls of acob homeare generally 18 to 24 inches thick. The mass will hold heat in winter and the night’s coolness in summer. Photo taken by Eva Wimmer.naturalcottageproject.com
Mashing the cob with bare feet on tarps in South Dakota.
There are some earth bags above the rock foundation that the cob is sitting on, I assume they will be covered with cob.
Built byHouseAlive.
In France cob is known as bauge.
在法国,他们用干草叉(或棒子镐),穿雨靴!
www.tiez-breiz.bzh
First course of cob drying on foundation.
A two foot high course might take one to three weeks to dry, you want your courses to dry a bit before new weight is applied to prevent the walls from buckling or slumping under their own weight. Leave the top rough so the next course adheres well. Originally found at pbase.com/hapm/ourhouse
Second course or lift laid. Best to trim excess cob then to have to add cob to a wall. Best to have a tall foundation if you are in flood prone areas or going to backfill around the foundation. Home by Kevin McCabe, cob builder. East Devon,buildsomethingbeautiful.co.uk
Trimming sides of second lift. Check with a level and trim with a spade, saw or machete. Best to have a tall foundation if you are in flood prone areas or going to backfill around the foundation. Home by Kevin McCabe, cob builder, courses also. East Devon,buildsomethingbeautiful.co.uk
Cob wall construction- shaving/planing the wall with a saw. Keeping the walls plumb is a daily necessity. Image taken during the construction of Colin Hamilton’s workshop on Pender Island, British Columbia.thujawoodart.com
Mike and Andrea Reinhardt’s cob home under construction in Missouri. Clay is from the property. Local Amish framed and put up the roof. In rainy environments it is a good idea to put up a roof while constructing the walls. Total cost about $15,000. digitalburg.com
单是Cob就有极好的热质量。但它在隔热方面不是最好的,最终热或冷会从一边到达另一边。所以在极端气候下,纯玉米不应该是你使用的唯一材料。稻草包等更轻、不导电的材料具有更大的绝缘价值。温哥华的生态意识(Ann和Gord Baird)正在把浮石混合到他们的雄天鹅中。他们的30%粘土、30%沙子、30%浮石和大量稻草的混合试验取得了良好的效果。Originally found at islandnet.com/~anngord/builders.html#slic
Home by Kevin McCabe, East Devon.
This future ‘carbon neutral’ home of Kevin McCabe has 10,000 sq ft of interior space and consists of 2,000 tons of cob. Machine mixed, of course.buildsomethingbeautiful.co.uk
Kevin McCabe, cob builder, renovation and new buildings, gives courses also. East Devon,buildsomethingbeautiful.co.uk
Roof rafters rest on cob walls. Home by Kevin McCabe, cob builder. The roof will be covered in living wildflowers. An external finish (render) should not be applied until the cob has completely dried.buildsomethingbeautiful.co.uk
A cob renovation in France.
Note the wood lintel and wood in door way ready to receive door hinges. Same wood in window corners for shutters.lamotteauxanglais.blogspot.com
Cob building renovation.
lamotteauxanglais.blogspot.com
北加州正在施工的Cob家庭楼梯。
Note the round wood poles and beams will support a second story.
By Kristen at muddyhands.typepad.com/cob/cob-house/
Cob家正在建设中。
If you use wooden supports for your roof (which many local building codes require) and build the roof before the walls, you do not have to worry about your new walls getting too wet during rainy weather. mudbandits.blogspot.com
Mud Girls Natural Building Collective.
Cob车间-盐泉和温哥华岛。
You do not want the foundation to attract moisture, so keep plantings away from the foundation.
Originally found at mudgirls.wordpress.com
Cob in Iowa. Lin Mullenneaux and her son plaster the circular stair. Their plaster recipe is made from kaolin clay, sifted sand, straw, wheat paste, and cattail fiber which was collected earlier in the day. Originally found at pbase.com/hapm/ourhouse
Cob mass heater.
eco-domishko.blogspot.com
Experimental Cob Interior
at The Farm, Summerton, Tennessee
www.thefarm.org
Photo byPJ Chmiel.
Experimental Cob Interior
at The Farm, Summerton, Tennessee
www.thefarm.org
Photo byPJ Chmiel.
Mini cob construction course.
www.eco-friendly-africa-travel.com
Dorothy Beal and her husband assist in the construction of their son’s home in Iowa. Originally found at pbase.com/hapm/ourhouse
“玉米棒子墙的坚固程度在很大程度上取决于它们在制作过程中不匆忙,因为如果匆忙,墙肯定会残废,也就是说,它们会从垂直方向摇摆或转向。在德文郡,建造棉花墙房屋的人喜欢在鸟儿开始筑巢时就开始工作,这样就有时间在冬天到来之前盖上房屋的外壳。2022世界杯四强亚盘赔率外墙在第二年春天粉刷。如果冬天还没盖上屋顶,工作就被耽误了,通常要在墙上临时盖上一层茅草,以防霜冻。”An Old Authority,gutenberg.org
The Best Books On Cob Construction
- The Hand Sculpted Houseby Ianto Evans, Michael Smith and Linda Smiley
- Building with Cob: A Step-by-Step Guideby Katy Bryce and Adam Weissmann
- The Cob Builders Handbookby Becky Bee
How To Start Your Cob Building:
- Make Earth Art – Sculpting your Cob:motherearthnews.com
- Brief Intro by Roger Hunt: periodliving.co.uk
- [1]greenbuildingadvisor.com
Edward Isays
It all looks good and I am all about conservation and less resources yet safety still comes to mind. How does it hold up under a earthquake and does it meet with most earthquake building code standards ?
Johnsays
类型cob地震/地震测试进入youtubes搜索栏,自己看看。
Shanayasays
This is the first time .. I saw this types of house which is made up of mudd … I really like it …
EmilyMotleysays
Looks amazing.