Code Applied by the app plumb.hanger.pex
Hanger spacing for PEX
How far apart PEX tubing may be supported — 32 inches horizontal at 1 inch and smaller, 48 inches at 1-1/4 inch and larger, 10 feet vertical.
| When | The app uses |
|---|---|
| horizontal, 1 in and smaller | 32 in |
| horizontal, 1-1/4 in and larger | 48 in |
| vertical | 10 ft |
- Source
- IPC · 308.5, Table 308.5 · read the public text
- Editions checked
- 2018 · 2021
- Used by
- Child counts Bid Check
- Amendments
No state or local amendment to this rule is on file. Not on file means the model code as written — check your jurisdiction.
A model code the authority having jurisdiction adopts.
PEX sags between supports, so the code caps the run between hangers tightly for the small sizes. On a takeoff that is one hanger per 32 inches of horizontal 1-inch-and-smaller PEX, rounded up per run — two 13-foot runs are five hangers each, ten in all.
What the app does with it
A line type whose name says PEX and a size — "1in PEX", '3/4" PEX' — is offered Hanger · 1 per 32 in (or 48 in above 1 in) under Child counts in its details, stamped with this rule; the Summary row and every export then carry the hangers, and Bid Check's Hangers on every supported run row warns while a PEX type has none. A name with no size gets the tighter spacing, never fewer hangers than the code.
What it does not do
The count is one hanger per interval of the run's tally length, which includes any drop you gave it — the app does not split a run into horizontal and vertical, so a riser's clamps are counted at the horizontal spacing (tighter than the vertical rule, never looser).
Verify against your edition
The Uniform Plumbing Code reads the same for PEX (UPC Table 313.3). Check the edition your jurisdiction adopts before a bid rides on the number.
Cited by section, not reprinted: the code text belongs to its publisher. Company practice is not a rule here — it lives with your pricing.