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Our project has small meeting rooms in an open-office plan. This situation appears to require an STC of 50. However, this level seems to be (unrealistically) high, especially considering the doors in the wall partition. STC 50 with a (closed) wall can be

Sound transmission requirements for adjacency combinations are listed in Reference Guide Table 1, but not all combinations are included. For example, an STC rating requirement is not provided for conference room and standard/executive office adjacency. Is

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NC-v4 EQc9:Acoustic performance

the meaning of "office" in office/hallway adjacency combinations

Hello,

I would be very grateful for explaining the type of space named „office” in the table 1 in the reference guide (page 758) in office/hallway adjacency combination. Is it regular office or some kind of executive space? The requirements are very strict, so it looks like as if this space were rather executive. Thank you in advance for your professional reply. 

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Jill Kurtz
Director of Building Sciences
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Thu, 08/16/2018 - 15:49

I would like an answer to this as well. We have a critical facility with private offices around the perimeter and an open office in the middle of a space. Do the walls separating these private offices from the open office (which you could argue have a hallway separating them) have to have an STC value of 50? If so, that means we cannot have vision glazing along those interior walls to get daylight into the open office space. 

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