Waste and vent piping configuration for a men's pool restroom containing one lavatory, two water closets, and one floor drain. The lavatory features a one-and-one-quarter-inch waste line and vent. Each water closet connects via a four-inch waste line with two-inch venting. The floor drain utilizes a two-inch waste line tied into a two-inch vent extending through the roof as a vent through roof. All fixture drains tie into a main sanitary sewer line with sizing indicated as two-inch and four-inch segments, ultimately connecting to the main sewer line per the plumbing plans.
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