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The dining hall uses straw bale construction
to demonstrate resource efficiency. The 7600 square foot building
seats 200 and makes use of a load-bearing steel frame with straw
bale infill, wood from well managed forests, renewable finish materials
such as wheat straw, and recycled products such as cellulose insulation.
The building provides comfortable dining on even the hottest summer
days by combining the effects of straw bale construction and other
energy-conserving building envelope measures with natural ventilation
and evaporative cooling.
The dining hall exceeds Title 24 by a 22% compliance margin. The
Low-E2 glazing was not credited in the T24 calcs. Further, T24 does
not credit the total effect of evaporative cooling or thermal mass.
Together, these features extend energy performance over and above
this margin. Energy efficiency was achieved using both passive and
active means:
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Deep overhangs and trellises for shading |
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A long roof monitor provides natural
ventilation and daylight |
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Straw bale walls covered with gunite
provide insulation and thermal mass |
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Concrete floors are durable and provide
thermal mass |
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Extra deep roof cavity is filled w/
dense packed cellulose, to provide R50 insulation |
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Light colored roofing reduces heat gain |
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Kitchen and dining room are cooled
with non-compressor evaporative cooling |
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Wood windows with Low-E2 glazing |
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High efficiency lighting |
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