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How Are the
Bales Used in Construction?
When
bales of straw are used as a building
material, they can be used in two different
ways: loadbearing, and non-loadbearing.
As a loadbearing structural material,
they are stacked into walls, and the
weight of the roof rests directly on
the bales. The first U.S. straw-bale
houses, built in Nebraska around the
turn of the century, were built in this
manner, and a number of them are still
standing win good condition today.
The non-loadbearing
system, which we use most commonly in
Southern California, uses a wood or
metal post-and-beam frame to support
the roof and is designed to meet the
structural and seismic codes required
by law. The bales of straw are used
as in-fill, between the posts, and provide
both the insulation and plastered-wall
surfaces.
How Does the
Cost of Straw Bale Construction Compare
with Conventional Building?
Conventional
building materials are non-renewable
and the ecological cost is high. The
financial cost is rising also, as fuel
prices, manufacturing costs, and lumber-harvesting
regulations continue to increase. Depending
on your design and the number of amenities,
building with straw bales can dramatically
reduce the financial cost of your home
or other building, while increasing
its energy efficiency and decreasing
its environmental impact.
The possibilities
of straw as an alternative building
material are unlimited. Straw bales
have been used to build $7/square foot
basic-shelter houses and $200/square
foot luxury homes. Bale buildings hundreds
of years old still stand around the
world today. Straw bale construction
is a choice you and the planet can live
with now and in the future.
Under
Construction, More Information to Come.
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