File:Fse-buoyancy-v3.svg

Fse-buoyancy-v3.svg (SVG file, nominally 900 × 600 pixels, file size: 7 KB)

Summary

Stack effect and neutral-plane exchange shape smoke movement. Based on Australian Building Codes Board et al. (2005), p. 2.5-6.

Diagram for the article Buoyancy (Fire Safety Academy wiki, level 1 Basic).

Source basis: Australian Building Codes Board et al. (2005), p. 2.5-6; Van Rossum (2027), §6.6
Alt text: Tall shaft with upward smoke and an opening with opposing flows around a neutral plane.

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

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	15:47, 2 November 2026	900 × 600 (7 KB)	Sanne (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity
	08:50, 2 November 2026	900 × 600 (7 KB)	Sanne (talk \| contribs)	Add modest Fire Safety Academy logo-icon watermark
	07:21, 2 November 2026	900 × 600 (5 KB)	Sanne (talk \| contribs)	Upload fse-buoyancy-v3.svg: diagram for Buoyancy (level-1 visual plan V3)

You cannot overwrite this file.

The following page uses this file:

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Short title	Tall shaft with upward smoke and an opening with opposing flows around a neutral plane.
Image title	Left: a tall building with a vertical shaft; warm smoky gas rises up the shaft and leaves at the top while cooler make-up air enters at the base (stack effect). Right: a fire compartment with a door opening; hot gas flows out above the neutral plane and cool air flows in below it. Arrow lengths change with height, showing that the pressure difference is not the same at every height. The smoke-layer interface lies slightly below the neutral plane.
Width	900
Height	600