Siegel & Strain Architects
| Camp Arroyo; Environmental Education Camp Livermore, CA
Dining Hall

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:

> Deep overhangs and trellises for shading
> A long roof monitor provides natural ventilation and daylight
> Straw bale walls covered with gunite provide insulation and thermal mass
> Concrete floors are durable and provide thermal mass
> Extra deep roof cavity is filled w/ dense packed cellulose, to provide R50 insulation
> Light colored roofing reduces heat gain
> Kitchen and dining room are cooled with non-compressor evaporative cooling
> Wood windows with Low-E2 glazing
> High efficiency lighting