drubinoff
Member
Hi,
I'm designing a renovation/addition to a small urban mixed use building which will add three or four apartments on the 2nd (existing) and 3rd (new) floors. This is in Massachusetts where the 2009 IBC is in effect with MA amendments. IEBC §911.1 invokes the IBC. IBC §1205.2 states the minimum net glazed area shall not be less than 8% of the floor area of the room served. Does this mean that a bedroom internal to something like a loft apartment must have an exterior window? I had thought that if the building were sprinklered we didn't necessarily need a window (for egress, at least). Can not artificial light and ventilation substitute for a bedroom window in such a circumstance?
Looking at 2009 IBC §1205.2.1 seems to demand that half the common wall be open, which may not be reasonable from the point of view of bedroom privacy.
Additionally, the 2nd floor facade is of historical nature and may not already have glazing that's 8% of the floor area served.
The third floor interior rooms I can take care of with skylights. However, the 2nd floor interior rooms (like bedrooms) seem to be a problem.
Thoughts?
Thanks,
Derek
I'm designing a renovation/addition to a small urban mixed use building which will add three or four apartments on the 2nd (existing) and 3rd (new) floors. This is in Massachusetts where the 2009 IBC is in effect with MA amendments. IEBC §911.1 invokes the IBC. IBC §1205.2 states the minimum net glazed area shall not be less than 8% of the floor area of the room served. Does this mean that a bedroom internal to something like a loft apartment must have an exterior window? I had thought that if the building were sprinklered we didn't necessarily need a window (for egress, at least). Can not artificial light and ventilation substitute for a bedroom window in such a circumstance?
Looking at 2009 IBC §1205.2.1 seems to demand that half the common wall be open, which may not be reasonable from the point of view of bedroom privacy.
Additionally, the 2nd floor facade is of historical nature and may not already have glazing that's 8% of the floor area served.
The third floor interior rooms I can take care of with skylights. However, the 2nd floor interior rooms (like bedrooms) seem to be a problem.
Thoughts?
Thanks,
Derek
