The William J. Clinton Presidential Center in Little Rock, Ark., is an award winning project. It features green design elemens, particularly its use of natural light.
Natural light was a key design goal. President Clinton wanted and emphasis on openness, accessibility, and light. The west-facing glass bridge, however, proved challenging in Little Rocks hot, humid climate. The solution to controlling solar heat gain was a floating glass scrim with a sun-screening interlayer and coating.
The designers first considered placing a system of louvers over the glass, but later opted for a curtain-wall system that incorporates a floating glass scrim, with a sun-screening interlayer and coatings, to reduce solar heat gain by half. Whereas the designers predicted energy performance at 25 percent better than ASHRAE 90.11999, the center currently uses 34 percent less energy than comparable code-compliant buildings.
http://www.eco-structure.com/commercial-projects/bridge-of-possibilities.aspx
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