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  1. 1Summary
  2. 2Licensing

Fse-cavity-barrier-v4.svg (SVG file, nominally 900 × 600 pixels, file size: 8 KB)

Summary

Tenant walls in the World Trade Center towers: the original detail with rated ceiling strips (left) and the later requirement of a continuous barrier to the slab (right). Based on National Institute of Standards and Technology (2005), p. 56.

Original vector illustration for Cavity barrier, level 2 Intermediate.

  • Source basis: National Institute of Standards and Technology (2005), p. 56 (1 hour tenant walls, 10 ft strips of 1 hour rated ceiling, later requirement of a continuous barrier from floor to slab)
  • Alt text: Two sections of a tenant wall: left, wall ends at the suspended ceiling with rated ceiling strips; right, wall continues through the ceiling void to the slab.

Licensing

New drawing by Fire Safety Academy. © Fire Safety Academy.

File history

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Date/TimeThumbnailDimensionsUserComment
current17:16, 2 November 2026Thumbnail for version as of 17:16, 2 November 2026900 × 600 (8 KB)Lisa (talk | contribs)Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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