Refer to the drawing of the two story residence with sewage ejector. All horizontal piping slopes 1/4″ per foot. Water closets are 1.6 gpf gravity tank. The kitchen sink has a food waste disposal. Ejector is 20 gpm. How many drainage fixture units discharge into the sewage ejector? (The drawing indicates that a bath tub, water closet, and a lavatory discharges into the sewage ejector.)

Refer to the drawing of the two story residence with sewage ejector. All horizontal piping slopes 1/4″ per foot. Water closets are 1.6 gpf gravity tank. The kitchen sink has a food waste disposal. Ejector is 20 gpm. How many drainage fixture units discharge into the sewage ejector? (The drawing indicates that a bath tub, water closet, and a lavatory discharges into the sewage ejector.)