Systems & CodePregunta 53 de 110
An oil-water separator serves three garage floor drains each rated at 20 gpm. The code allows sizing at 75 percent of the total connected flow for diversity. What design flow sizes the separator?
a.45 gpm
b.30 gpm
c.60 gpm
d.80 gpm
Explicación
Total connected flow = 3 x 20 = 60 gpm, and at 75 percent diversity the design flow is 60 x 0.75 = 45 gpm. The separator must be large enough to let oil rise and separate before the water passes on to the sewer. Undersizing lets oil carry through and creates an explosion hazard in the sewer.
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