File:St marys empty old hole.jpg

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Description Cable tray through-penetration in a fire-resistance rated concrete block wall at St. Mary's Paper in Sault Ste. Marie, Ontario, Canada. There is no firestop, which would prevent the spread of fire and flue gases from one fire compartment to another.
Date 1990s
date QS:P,+1990-00-00T00:00:00Z/8
Source Own work
Author Achim Hering

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Date/TimeThumbnailDimensionsUserComment
current02:21, 11 March 2008Thumbnail for version as of 02:21, 11 March 20084,687 × 3,178 (949 KB)Achim Hering (talk | contribs){{Information |Description=Cable tray [http://en.wikipedia.org/wiki/Penetration_%28firestop%29 through-penetration] in a [http://en.wikipedia.org/wiki/Fire-resistance_rating fire-resistance rated] [http://en.wikipedia.org/wiki/Concrete_masonry_unit c

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