Innovative solutions for creating healthy, efficient, eco-friendly homes

May 2003

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Paint By The Numbers

A lot of today's exterior siding, trim and accent materials promise ease of maintenance - and many tell you that you'll never have to paint them. And even if a new paint job isn't necessary, maybe you'll want to shake up the look a little bit. But can you use the same brand and kind of paint on your fiber-cement siding that you used on your cellular PVC trim? And what kind of paint works best on factory-finished aluminum window frames? Now more than ever, home exteriors are made up of combinations of various different substrates.

A guide to the language of cellular technology

CDMA (Code Division Multiple Access) - The most common digital technology in which information is digitized, assigned a unique code and spread over the entire bandwidth available to the phone. The receiver uses the same code to reassemble the signal. CDMA allows as many as 10 separate calls to occupy the same amount of space as an analog call. TDMA (Time Division Multiple Access) - The first digital cellular technology to hit the market.

When Good Pipes Go Bad

Foundation Options

As discussed in the previous installment, a building foundation performs a surprising number of tasks. The four critical tasks are to: Bear the weight of the building loads, Anchor against the forces of wind and earthquake, Prevent vertical motion due to frost, and Isolate the building from ground moisture. In general, there are nine different foundation types. Each is capable of satisfying these four basic requirements if built properly.

A Mad Cow in the Garden?

The diagnosis of Mad Cow Disease in 30 people in Great Britain raised concerns as to whether using animal by-products in the garden poses a hazard. Most human cases of Mad Cow Disease resulted from people eating animals that had been fed tainted by-products, but four gardeners who came down with the disease might have been infected by inhaling bone-meal dust they were using on their roses.

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