Rule of thumbAdvisory
Wet wall clustering
PLB-STACK-01Description
In multi-story homes, upper-floor bathrooms should ideally stack above ground-floor bathrooms or kitchens to share plumbing chases.
Why this exists
Stack bathrooms, kitchens, and laundries above each other or share walls. Cuts plumbing material cost dramatically and simplifies vent runs.
Categories
PlumbingBathroomKitchen
Source
Industry consensusno manifest entry
Architectural Graphic Standards (12th Edition)
Section: Plumbing systems
Published 2026-05-09 · last verified 2026-05-09
Solver enforcement
The constraint solver runs check function plb-stack-01 as a soft constraint with weight 2.
Related directives
- Kitchen sizing · KITCHEN-SIZE
- Full bathroom sizing · BATHROOM-MIN
- Half bathroom sizing · HALF-BATH-MIN
- Kitchen near mudroom + garage · KITCHEN-NEAR-MUDROOM
- Kitchen adjacent to dining · KITCHEN-NEAR-DINING
Last reviewed 2026-05-09.