The LEED v4 acoustics calculator expands on the guidance provided in the credit and reference guide with respect to the sound transmission requirements and associated calculations. It notes that each surface in a room (each plane surrounding the space) should have a separate assembly including the floor and ceiling. What do we do if we're a one story slab-on-grade construction? Do we just ignore those planes?

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Daniel Hicks

Daniel Hicks, E.I., INCE

Geiler & Associates

LEEDuser Basic Member

175 thumbs up

Fri, 10/28/2016 - 15:30

Hi Adam. Sorry, it took me a while to get my hands on the form so I could take a look. Apparently LEED doesn't think that any rooms will ever have an exterior wall, floor, or ceiling...according to their calculator. The world is just one big building! I would omit those planes in the calculator. Then, upload a narrative where they ask for "sound transmission documentation" explaining which walls/floors/ceilings are exterior. Hopefully they'll modify their calculator in the near future, or change the instructions to omit exterior assemblies if there aren't STC requirements for them. And while they're at it they can change "sound transmission", everywhere that they're using it, to read "sound isolation" so they can at least sound like they know what they're asking for.../rant

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Sounds transmission - Ceilings and Floors

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