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Welcome to sustainable by design!
sustainable by design is the consulting firm of Christopher Gronbeck, Seattle, Washington, USA.
The firm provides solar engineering, green building consulting, graphic design, and web site design and programming services, primarily within the sustainable energy and architecture fields.
What would you like more information about?
Our premiere solar design tool is SunAngle, a shareware program used by people around the world since 1995 to calculate solar angles based on location, date, and time. SunAngle runs directly in your web browser.
 A more sophisticated version of SunAngle is also available for purchase. The Sun Angle Professional Suite includes additional features, thorough technical documentation, and full technical support. It's available for sale on CD-ROM or by e-mail delivery.
 This solar chronograph sculpture was designed and built by Grant Calvin, a surveyor in Taree, Australia with interests in sustainable living, permaculture, rammed earth building, and surfing.
The time is read off the dial by lining up the sun with the sun symbol on the sculpture as in the photograph above. By lining up the sun symbol with the various time and season intersections you can assess sun angles at all times and seasons of the year.
Grant used SunAngle to assist in calculating the solar angles used in the sculpture.
What a beautiful way to tell the time!
[larger photo]
[reverse angle]
Grant may be contacted at solidearth@bigpond.com
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