San Francisco : Architect and Engineer, Inc · leaf 382
ght have approximated 50 per cent. NOISE PROBLEM SOLVED Another new development in construction has solvedthe serious noise problem that arose in buildings whereair conditioning ducts have acted as carriers of sound.A fire-resistant, moisture-resistant sheet has been de-veloped which may be used to… … £e4 THEDAMPNESS _ OUTSIDE aaaUU
Architecture · Building
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