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Attic / Intersitial Space

D

damstein

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Wondering if anyone would happen to know where specifically the IBC defines interstitial space, or if an attic would be considered a specific type of inerstitial space?

Thanks in advance!
 
I hardly think wikipedia is a quotable resource from a building code standpoint. (Not that I didn't see this diagram online before my initial post.)

Having read this section, I do not see any specific reference to interstital space requirements. By your inference that an interstital space is a concealed space, could one also conclude that an "attic" qualifies as a concealed space seeing as attics are referenced in this section?
 
It does not really address a "real" interstitial space like in a VA hospital. The Wiki-picture is pretty accurate for what is done in these type of facilities. It is always a debate whether this is a concealed accessible space, an occupied floor, part of a floor-ceiling assembly, or other concept. The typical questions are whether it needs to be sprinklered and how to protect penetrations.
 
Reading different code sections from different codes it is generally implied that a concealed space is also an interstitial space and an attic is also a concealed space.

[BG] ATTIC. The space between the ceiling framing of the top story and the underside of the roof.

703.7 Marking and identification.
Where there is an accessible concealed floor, floor-ceiling or attic space, fire walls, fire barriers, fire partitions, smoke barriers and smoke partitions or any other wall required to have protected openings or penetrations shall be effectively and permanently identified with signs or stenciling in the concealed space. Such identification shall:
P2706.1 General.
interstitial spaces above ceilings and below floors
 
damstein said:
I hardly think wikipedia is a quotable resource from a building code standpoint. (Not that I didn't see this diagram online before my initial post.)

Having read this section, I do not see any specific reference to interstital space requirements. By your inference that an interstital space is a concealed space, could one also conclude that an "attic" qualifies as a concealed space seeing as attics are referenced in this section?
Click to expand...

May depend on head height within it?
 
Attic and concealed space both have IBC requirements, determine what your interstitial space be an attic or concealed space
 
damstein said:
Wondering if anyone would happen to know where specifically the IBC defines interstitial space, or if an attic would be considered a specific type of inerstitial space?

Thanks in advance!
Click to expand...
an ATTIC. is defined in the . "The space between the ceiling framing of the top story and the underside of the roof. "

Interstitial space is not, it is defined in architectural dictionary's as "An interstitial space is an intermediate space located between regular-use floors, commonly located in hospitals and laboratory-type buildings to allow space for the mechanical systems of the building."
Not an attic.
 
Ok why are we talking about a 2013 post??

That was replied to in 2020?

There is no definition for "concealed space" in the IBC
 
mark handler said:
an ATTIC. is defined in the . "The space between the ceiling framing of the top story and the underside of the roof. "

Interstitial space is not, it is defined in architectural dictionary's as "An interstitial space is an intermediate space located between regular-use floors, commonly located in hospitals and laboratory-type buildings to allow space for the mechanical systems of the building."
Not an attic.
Click to expand...

And sometimes a return air plenum on those floors?
 
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