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TNM outputs “invalid” results listed in the Sound Levels results table when I model berms. What is causing this error message?

April 26, 2017berms invalid levels model outputs results sound Table TNM

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TNM outputs “invalid” results listed in the Sound Levels results table when I model berms. What is causing this error message?

1 Answer

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10 Posted

The toe of the berm (end of slope) can bury receivers and it may not be obvious. This will cause “invalid” results for that receiver. Use the skew view to make sure the toe of the berm is not overlapping a roadway or receiver location.