San Francisco : Architect and Engineer, Inc · leaf 274
her important factors for heating and venti-lating. A whole chapter is devoted to sound insulationand sound transmission; again, a number of prac-tical examples and illustrations are brought in, including the sound-and-vibration insulation forheavy machinery. Mr. Close concludes his bookwith a… … A new damper quadrant, designed in a modernpattern for light industry and dwellings, has justbeen placed on the market by the Western AirDevices, Inc., 1349 Vernon Avenue, Los Angeles. The device comes in one-quarter and three-eigth inch sizes, and is attractively plated withrust resisting cadmium.…
Architecture · Building
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