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close this bookAppropriate Building Materials: a Catalogue of Potential Solutions (SKAT; 1988; 430 pages)
View the documentPreface
Open this folder and view contentsIntroduction
Open this folder and view contentsFundamental information on building materials
Open this folder and view contentsFundamental information on building elements
Open this folder and view contentsFundamental information on protective measures
close this folderExamples of foundation materials
View the documentNatural stone foundations
View the documentRammed earth foundations
View the documentBurnt brick foundations
View the documentConcrete foundations
View the documentSplit-bamboo piles
View the documentWooden post foundation
Open this folder and view contentsExamples of floor materials
Open this folder and view contentsExamples of wall materials
Open this folder and view contentsExamples of roof materials
Open this folder and view contentsExamples of building systems
Open this folder and view contentsAnnexes
 

Rammed earth foundations

KEYWORDS:

Special properties

Only used for earth constructions on dry sites

Economical aspects

Low cost

Stability

Poor to medium

Skills required

Semi-skilled labour

Equipment required

Excavation and tamping equipment

Resistance to earthquake

Low

Resistance to hurricane

Low

Resistance to rain

Low

Resistance to insects

Low

Climatic suitability

Only very dry climates

Stage of experience

Traditional method

SHORT DESCRIPTION:

• Rammed earth foundations are made of well graded soil, preferably wig a stabiliser for water resistance and higher strength.

• The site must be well drained and great care is needed to protect the foundation from ground moisture, especially with a plastic foil or bitumen felt. Bitumen paint, or a facing of rubble stone or burnt bricks are alternatives.

• When in doubt about suitability of rammed earth foundations, they should not be used. Stabilized soil blocks can be used instead, but similar protective measures are necessary.

• Wherever possible, the earth foundation should be placed on a concrete footing.

• The foundation is made in formwork, in the same way as the walls: layers of 10 cm soil are tamped down to 6 - 7 cm, before the next layer is filled up.

Further information: Bibl. 02.06, 02.08, 02.19, 02.32, 20.05.


Procedure of Constructing a Rammed Earth Foundation (Bibl. 20.05)

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