Canadian Broadcasting Corporation, <a href="//commons.wikimedia.org/wiki/Toronto" title="Toronto">Toronto</a>, <a href="//commons.wikimedia.org/wiki/Ontario" title="Ontario">Ontario</a>, <a href="//commons.wikimedia.org/wiki/Canada" title="Canada">Canada</a>, Electrical Closet <a href="//commons.wikimedia.org/wiki/Firestop" title="Firestop">firestop</a>: During the original construction, <b>AD firebarrier mortar</b> was installed at insufficient depth in this <a href="//commons.wikimedia.org/wiki/Cable_tray" class="mw-redirect" title="Cable tray">cable tray</a> penetration. Re-entries were not subject to a routine re-sealing but did reveal the generically insufficient thickness.
<a href="//commons.wikimedia.org/wiki/User:Achim_Hering" title="User:Achim Hering">Achim Hering</a>
2007-08-27
<span class="int-own-work" lang="en">Own work</span>