Abstract
A newly constructed and otherwise well-regarded building suffered from excessive rain noise in open areas where the roof deck was exposed. A single major rain event was used to characterize the existing condition, making use of a handheld sound level meter, mobile phone recordings, and weather radar data and corresponding rainfall rates. Several retrofit options were evaluated using a "homebuilt" rainfall simulator fashioned after that described in ISO 140-18. Measured data allowed each treatment's benefit to be compared to a speech interference criterion. Because the actual practical criterion was Owner satisfaction, an audio presentation using filtered recordings was planned rather than presentation of engineering data. However the simulator was constructed so that changes could be rapidly made, so that an Owner representative was able to personally experience and approve the changes prior to installation.
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