ArchitectureWeek - Puzzler Answer #88

Answers . 06 March 2002


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Quizzical Pursuit
—The Architecture Puzzler

Created by Dave Guadagni

Solution to Last Week's Puzzler
Architecture Puzzler #88

Question

Lightweight aggregates can reduce the weight of concrete by what percent?

Answer

A cubic foot of concrete weighs about 144 pounds (65 kilograms). Using lightweight aggregates can reduce this by about 30 pounds (14 kilograms) or about 20 percent.

Okay, got it? Now try this week's Puzzler:

http://www.ArchitectureWeek.com/quiz.html

Dave Guadagni, AIA, is an architect with Robertson/Sherwood/Architects

The dome of the Pantheon in Rome is constructed of concrete that decreases in density from bottom to top due to lighter aggregate (pumice) used toward the oculus.
Great Buildings Photo: © Kevin Matthews

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