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<p>Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity</p> <p><b>New page</b></p><div>== Summary ==<br /> Intermediate stratification in an atrium: the smoke stops below a warm layer under the glazed roof, so a beam is placed below that height to intercept the plume. Based on Milke (2002b), pp. 4-304 to 4-305.<br /> <br /> Original vector illustration for [[Beam smoke detector]], level 2 Intermediate.<br /> <br /> * Source basis: Milke (2002b), p. 4-304 (intermediate stratification, glazed roofs, solar load, floor-to-ceiling differences of about 50 °C) and p. 4-305 (beam detectors below the stratification height; Figures 4-13.13 and 4-13.14, redraw, do not copy); Schifiliti et al. (2002), p. 4-27 (stratification where plume temperature equals surrounding air)<br /> * Alt text: Atrium cross-section: a warm air layer under the glazed roof stops the smoke plume halfway; a beam below that height crosses the plume.<br /> <br /> == Licensing ==<br /> New drawing by Fire Safety Academy. © Fire Safety Academy.</div>

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