File:Fse-ventilation-factor-v2.svg

Fse-ventilation-factor-v2.svg (SVG file, nominally 900 × 600 pixels, file size: 9 KB)

Summary

Equal opening areas can give different ventilation factors when their heights differ. Based on Walton and Thomas (2002), pp. 3-174, 3-177.

Original illustration for Ventilation factor, level 3 Advanced.

Source basis: Walton and Thomas (2002), pp. 3-174, 3-177; illustrative geometric changes to source example.
Alt text: The original factor is 1.449, the wider opening gives 2.898, and an equal-area lower opening gives 1.025.
Accuracy notes: The two altered geometries are illustrative, not measured fire tests; retain identical scale for silhouettes.

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

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	16:34, 2 November 2026		900 × 600 (9 KB)	Emma (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Short title	Equal opening areas can give different ventilation factors when their heights differ. Based on Walton and Thomas (2002), pp. 3-174, 3-177.
Image title	The original factor is 1.449, the wider opening gives 2.898, and an equal-area lower opening gives 1.025. Source basis: Walton and Thomas (2002), pp. 3-174, 3-177; illustrative geometric changes to source example.
Width	900
Height	600