What is the minimum diameter pipe that can be installed as a building drain (slope 1/8"/ ft) when the DFU load is 460 DFU?

Name: What is the minimum diameter pipe that can be installed as a building drain (slope 1/8"/ ft) when the DFU load is 460 DFU?
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Question

Quizplus · Accepted Answer

According to plumbing codes, a 6-inch diameter pipe is required for a building drain with a slope of 1/8" per foot to handle a load of 460 Drainage Fixture Units (DFU).

What Is the Minimum Diameter Pipe That Can Be Installed