For an ordinary separately trapped sink under the general rule of unamended 2021 IPC Section 1002.1, what maximum horizontal distance is permitted from the fixture-outlet centerline to the trap-inlet centerline? No special exception applies.

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For an ordinary separately trapped sink under the general rule of unamended 2021 IPC Section 1002.1, what maximum horizontal distance is permitted from the fixture-outlet centerline to the trap-inlet centerline? No special exception applies.

A24 inches
B48 inches
C60 inches
30 inches

Where to look it up

https://www.ncosfm.gov/b-1-2024-ncpc/open

Why D is correct

The general horizontal limit is 30 inches, measured between the stated centerlines. The separate 24-inch vertical limit runs from the fixture outlet to the trap weir. Do not exchange the dimensions or assume that every horizontal upstream connection inevitably holds standing waste. See PDF p.139. Source: 2021 IPC model base text reproduced in NC OSFM comparison document, https://www.ncosfm.gov/b-1-2024-ncpc/open

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For an ordinary separately trapped sink under the general rule of unamended 2021 IPC Section 1002.1, what maximum horizontal distance is permitted from the fixture-outlet centerline to the trap-inlet centerline? No special exception applies.

For an ordinary separately trapped sink under the general rule of unamended 2021 IPC Section 1002.1, what maximum horizontal distance is permitted from the fixture-outlet centerline to the trap-inlet centerline? No special exception applies.

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