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  1. 1Summary
  2. 2Licensing

Fse-alpert-correlations-v4.svg (SVG file, nominally 900 × 600 pixels, file size: 9 KB)

Summary

Steps of a hand calculation of sprinkler or heat detector response with the Alpert correlations, including the checks on their validity. Based on Iqbal and Salley (2004), pp. 10-9 to 10-12, and Alpert (2002), pp. 2-19 to 2-20.

Original illustration for Alpert correlations, level 4 Expert.

  • Source basis: Iqbal and Salley (2004), p. 10-9 (activation time equation, series of steady fires), p. 10-10 (correlations and regions), p. 10-12 (assumptions); Alpert (2002), p. 2-19 (regions, unconfined ceiling) and p. 2-20 (2Q and 4Q); Stroup et al. (2016), pp. 6-17 to 6-18 (under-prediction with a hot gas layer)
  • Alt text: Flowchart from fire inputs through checks for walls and a hot gas layer to the ceiling jet temperature, velocity and activation time.

Licensing

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

File history

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Date/TimeThumbnailDimensionsUserComment
current17:13, 2 November 2026Thumbnail for version as of 17:13, 2 November 2026900 × 600 (9 KB)Jan (talk | contribs)Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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