2-3.10 The flame-spread distance, temperature, and change
in photoelectric cell readings shall be plotted separately on
suitable coordinate paper, as shown in Figures 2-3.10(a), (b),
and (c), representative curves for red oak temperature–time,
absorption–time smoke density, and distance–time flame
spread, respectively. Flame spread shall be determined from
the observed distance, less 41/2 ft (1.37 m).
2-3.10 The flame-spread distance, temperature, and changein photoelectric cell readings shall be plotted separately onsuitable coordinate paper, as shown in Figures 2-3.10(a), (b),and (c), representative curves for red oak temperature–time,absorption–time smoke density, and distance–time flamespread, respectively. Flame spread shall be determined fromthe observed distance, less 41/2 ft (1.37 m).
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