File:Fse-fire-induced-pressure-v5.svg

Fse-fire-induced-pressure-v5.svg (SVG file, nominally 900 × 600 pixels, file size: 8 KB)

Summary

Forces on a door between a pressurised escape route and the fire floor. Based on Klote (2002), pp. 4-281 and 4-285.

Original illustration for Fire-induced pressure, level 4 Expert.

Source basis: Klote (2002), p. 4-281 (Equation 8: force to overcome the closer plus the force to overcome the pressure difference, applied at the knob; definitions of W, A, d), p. 4-285 (door opening forces to refuge areas or escape routes; 133 N limit in NFPA 101 as cited)
Alt text: Plan view of a door leaf between a high-pressure escape route and a low-pressure fire floor, with pressure arrows, hinge, knob, closer and opening force.

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

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:15, 2 November 2026		900 × 600 (8 KB)	Jan (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Short title	Forces on a door between a pressurised escape route and the fire floor. Based on Klote (2002), pp. 4-281 and 4-285.
Image title	Plan view of a door leaf between a high-pressure escape route and a low-pressure fire floor, with pressure arrows, hinge, knob, closer and opening force. Source basis: Klote (2002), p. 4-281 (Equation 8: force to overcome the closer plus the force to overcome the pressure difference, applied at the knob; definitions of W, A, d), p. 4-285 (door opening forces to refuge areas or escape routes; 133 N limit in NFPA 101 as cited)
Width	900
Height	600