Site one. [California state office building]

A new four-story California state office building was designed in Sacramento. The building's thermal mass was used to assist cooling. A combination of shading, lighting and insulating techniques were used to reduce the energy demand. Another energy efficient strategy used was better lighting and low level ambient lighting supplemented by natural daylight. A central atrium is used as a vestibule, preheater and cooler for building ventilation, lighting, dining and a resting place. Graphs are included of the heat load in the winter months and summer time as well as the building's capacity for absorbing heat.