Adobe Construction

Ideas for construction in the northeast sertão region of Brazil

 

Structures as high as 3 stories can be built with adobe block, with greater efficiency in heating and cooling because of the thermal "flywheel effect" from adobe's dense mass, which tends to even out extreme changes in temperature. This often results in lower heating and cooling costs. Because of the simplicity of the adobe constructionprocess, less skilled labor is necessary to complete a structure.

Homes and buildings ranging from architecturally designed mansions to simple, basic structures can be built with adobe block. With a look and feel superior to many building methods, adobe structures have lasted for thousands of years, with far less maintenance necessary than conventional homes.

Completely soundproof, well insulated, all natural and with a unique "feel" in architecture, adobe has been the choice of thousands of builders throughout the world.

One option with an investment of US$ 45,000.00 using an Earth Press Machine! After construction of the hotel, this machine could be used for other local construction projects.

Earth Press Machine - diesel

Simplier and cheaper machine

Working with local labor and materials, a second option is making the blocks ourselves manually.

"From 25 years of experience, we have found soils in most parts of the world make excellent block. If a soil contains too much clay, additional sand can be added to achieve the right ratio. Moisture is usually the other critical factor, if a soil is too wet it must be dried out, too dry, water must be added. The best way to test a soil is to create blocks and look at the result. Our factory will test any soil prior to purchasing a machine to insure quality block. The "red beds" famous throughout the world, especially in equatorial regions, often make excellent block."

In addition, Portland cement can be added to the soil prior to compression (10% cement, 90% soil) producing blocks that are impervious to weathering and don't require stucco finish. The hopper of the machine can be loaded with a skiploader, or manually with shovels (see illustration). A concrete foundation wall is first poured. The blocks are then stacked directly on the foundation forming walls, thereby reducing the labor necessary, the blocks being handled only once. The longest block dimension is used to create the wall thickness, approaching 16 inches in depth.

Once the the wall is complete, wood forms are nailed (nail guns make this job easy) directly to the top borders of a block wall. Reinforcement is added in the form of rebar, and then concrete is poured into the forms.

Lag bolts are also added to the concrete to tie in the roofing system.

This concrete bond beam gives the walls additional strength and unifies the structure. Wiring and plumbing channels are then cut into the wall, and fixtures added. Finally, either nylon or wire mesh (chicken wire) is nailed to both sides of the wall, and a stucco finish is applied. The resulting walls are incredibly strong, durable (the oldest buildings in the world are adobe), sound proof, and aesthetically superior to standard walls.

Wall ready to apply stuco

Blocks stacked ready for use

Beginning a wall

 

 

Construction Techniques

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Casa Adobe - Recommended reading

Casa Adobe

Written by Karen Witynski and Joe P. Carr

The book measures 11.24" x 8.89" x 0.86" thick. 192 pages
Published by Gibbs Smith, POB 667, Layton, UT 84041 (September 2001).
It retails in hardcover for $39.95
Available for only $27.97 from this link.
ISBN: 1586850318


The Small Adobe House - recommended reading

The Small Adobe House

Written by Agnesa Reeve, Robert Reck (Photographer)
List Price: $21.95
Available for only $15.37 from this link.
Hardcover: 96 pages ; Dimensions (in inches): 0.63 x 8.46 x 8.18
Publisher: Gibbs Smith Publisher; (August 2001)
ISBN: 1586850652