There are code requirements for maintenance of plumbing drain lines. Which of the following need to be implemented? Select all that apply.

A) Cleanouts in horizontal drain lines at 75? minimum spacing for 4? and smaller piping.
B) Cleanouts at changes in direction of each vertical plumbing stack.
C) Cleanouts every 4 stories in roof drain leaders.


A) Cleanouts in horizontal drain lines at 75? minimum spacing for 4? and smaller piping.
B) Cleanouts at changes in direction of each vertical plumbing stack.

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