File:Fse-timber-in-fire-v1.svg

Fse-timber-in-fire-v1.svg (SVG file, nominally 900 × 600 pixels, file size: 6 KB)

Summary

Timber develops an uncharred core, pyrolysis zone and char. Based on White (2002), p. 4-260, Figure 4-11.2, redraw, do not copy.

Diagram for the article Timber in fire (Fire Safety Academy wiki, level 1 Basic).

Source basis: White (2002), p. 4-260, Figure 4-11.2, redraw, do not copy
Alt text: Timber section with uncharred core, pyrolysis zone and char, with combustible gases leaving.

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

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	Date/Time	Dimensions	User	Comment
current	15:57, 2 November 2026	900 × 600 (6 KB)	Sanne (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity
	09:00, 2 November 2026	900 × 600 (6 KB)	Sanne (talk \| contribs)	Add modest Fire Safety Academy logo-icon watermark
	08:06, 2 November 2026	900 × 600 (3 KB)	Sanne (talk \| contribs)	Upload fse-timber-in-fire-v1.svg: diagram for Timber in fire (level-1 visual plan V1)

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Short title	Timber section with uncharred core, pyrolysis zone and char, with combustible gases leaving.
Image title	Cross-section of a timber beam under a floor, exposed to fire on its sides and bottom. From the inside out: a core of normal wood, a pyrolysis zone and an outer char layer with rounded corners. Volatile gases leave the char surface and feed the flames below. A thin region between the original surface (dashed) and the present char surface marks char erosion.
Width	900
Height	600