Answers . 05 March 2003                     
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Quizzical Pursuit
—The Architecture Puzzler

Created by Dave Guadagni

Solution to Last Week's Puzzler
Architecture Puzzler #136


The average rated life of a lamp refers to the point where 50 percent of a test batch of lamps are still operating. The "lamp life" of an incandescent lamp is 750 to 1000 hours. How much greater is the lamp life of a halogen lamp? A 9-watt compact fluorescent has a lamp life of 10,000 hours. Is the lamp life of an 18-watt fluorescent greater or less?


Halogen lamp life is about twice that of incandescent, about 2000 hours. An 18-watt fluorescent has a 2000-hour-longer lamp life than a 9-watt fluorescent.


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


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

Quizzical Pursuit is Copyright 2003, Dave Guadagni.


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Lamp replacement how often?

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