Annulus (firestop): Difference between revisions
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[[Image:Sprinkler branch penetration.jpg|thumb|[[fire sprinkler system|Sprinkler]] branch [[pipe (material)|pipe]] through-penetration with [[plastic]] [[Sleeve (construction)|sleeve]] - missing [[firestop]] in [[concrete]] fire separation. The space between the sleeve and the pipe is the '''annulus''' or '''annular space''']] |
[[Image:Sprinkler branch penetration.jpg|thumb|[[fire sprinkler system|Sprinkler]] branch [[pipe (material)|pipe]] through-penetration with [[plastic]] [[Sleeve (construction)|sleeve]] - missing [[firestop]] in [[concrete]] fire separation. The space between the sleeve and the pipe is the '''annulus''' or '''annular space''']] |
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The '''annulus''', or '''annular space''', is the space between a [[penetrant (mechanical, electrical, or structural)|penetrant]] and whatever surrounds it, such as the sides of an opening or a [[Sleeve (construction)|sleeve]], as the case may be. |
The '''annulus''', or '''annular space''', is the space between a [[penetrant (mechanical, electrical, or structural)|penetrant]] and whatever surrounds it, such as the sides of an opening or a [[Sleeve (construction)|sleeve]], as the case may be. It is named, due to its shape, after the corresponding [[Annulus (mathematics)|geometric concept]]. |
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==External links== |
==External links== |
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Revision as of 09:02, 1 June 2023
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The annulus, or annular space, is the space between a penetrant and whatever surrounds it, such as the sides of an opening or a sleeve, as the case may be. It is named, due to its shape, after the corresponding geometric concept.
External links
External examples of the use of the term.
- Annulus, a term used within a firestop patent
- Annulus, as used in UL System C-AJ-1557 Firestop System, Configuration A
