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Rammed Earth House Design

Rammed Earth House Design

Depending upon where we live on the earth, we will find different climates, as well as different resources and methods for building construction. Working with the tools, materials, and techniques most appropriate to the local area when we build our houses can save both money and energy. Rammed earth is one such building method, and one that is highly energy efficient.

 

  • Rammed earth construction combines many of adobe’s best qualities. Soil from the site is mixed with proper proportions of clay, sand, water, and cement. The earth is then tamped into reusable forms to fill walls between concrete frames, foundations, and bond-beams, which tie the structure into an earthquake-resistant frame. If attention is paid to detailing at window and door openings, the rammed earth dwelling can have the same gracious and solid feeling as adobe, for less labor.
  • Rammed earth walls contain tremendous thermal mass, so rammed earth homes are highly energy efficient. Further insulation may not be necessary, depending on your climate and site orientation.
  • Think of rammed earth as a sort of “instant rock.” The earth rammer plies his trade in an environment filled with the dust of soil and cement, and the staccato thump, thump, thump of backfill tampers. Watching soil become stone beneath your feet is like magic. When the forms are removed, the well-built wall will survive the test of centuries.
  • To make a strong and durable rammed earth wall, the soil should be a well-graded blend of different-sized particles. Large particles provide the bulk of the wall, while the smaller particles fill in the spaces. With every-decreasing particle sizes, virtually all of the air space within the wall can be eliminated, resulting in the densest wall possible. Density is one of the contributors to ultimate wall strength.

 

Photo Credit: Moshirah (Own work) [CC-BY-3.0], via Wikimedia Commons

Read more: Crafts & Design, Materials & Architecture

Excerpted from the Real Goods Solar Living Source Book, edited by Doug Pratt and executive editor John Schaeffer.Copyright (c) 1999, Real Goods. Reprinted by permsision of Chelsea Green Publishing Company and Real Goods.
Excerpted from Real Goods Solar Living Source Book, edited by Doug Pratt and executive editor John Schaeffer.

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Annie B. Bond

Annie is a renowned expert in non-toxic and green living. She was named one of the top 20 environmental leaders by Body and Soul Magazine and "the foremost expert on green living." - Body & Soul Magazine, 2009. Learn Annie's latest eco-friendly news on anniebbond.com, a website dedicated to healthy and green living.

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The Real Goods Solar Living Sourcebook

The Sourcebook remains the best introduction to energy-efficient technology for common folks.
-Whole Earth Review

From novices to pros, this book explains renewable energy and efficient building practices. Great reference to start design and cost estimation from each section. One of the best features of this book is the addition of the National Electric Code for RE systems. It's possible to pick a building material to build a house, design a solar electric system, decide on appliances, determine the use of a greywater system, and more from 562 pages. No more looking up pages on the net!buy now

6 comments

+ add your own
12:42PM PDT on Jun 2, 2012

thnx for this

2:56PM PST on Dec 14, 2011

Thanks Annie!

5:08AM PST on Dec 13, 2011

Thanks for the article.

7:39AM PDT on Aug 5, 2010

Thank you so much for this. I've always loved this idea, along with straw bale buildings. Isn't it interesting that in this day and age, having screwed up so badly, we are returning to ancient methods?

6:04AM PDT on Aug 5, 2010

Another great building technique &, as wlliam l., says -- very cool during summer heat!

12:25AM PDT on Aug 5, 2010

coolness

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Disclaimer: The views expressed above are solely those of the author and may not reflect those of
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