IPC Chapter 4 — Fixtures, Faucets, and Fixture Fittings

Updated Mar 26, 2026

Minimum fixture counts by occupancy, water conservation flow rates, ADA accessible fixtures.

IPC Ch4: WC 1.6 gpf max (1.28 where required), urinals 0.5 gpf, lav 0.5 gpm, kitchen 1.8 gpm, shower 2.0 gpm. ADA: 18in centerline, 17-19in seat, grab bars, 60in turning. Min fixture counts per Table 403.1 by occupancy.

TAGS

IPC fixtures water-conservation accessibility plumbing

DETAILS

code year

2024

code system

IPC

code section

Chapter 4

SOURCES

🔗https://codes.iccsafe.org/content/IPC2021P1

RELATED KNOWLEDGE

📋 Code

IMC Chapter 10 — Boilers, Water Heaters, Pressure Vessels

Boiler rooms, clearances, T&P relief valves, expansion tanks, combustion air requirements.

📋 Code

IMC Chapter 6 — Duct Systems

Duct materials, SMACNA construction, fire/smoke dampers, flex duct, plenum requirements.

📋 Code

IPC Chapter 7 — Sanitary Drainage

DWV system: pipe sizing by DFU, slopes, cleanouts, traps, building drains.

📋 Code

IPC Chapter 9 — Vents

Vent sizing, developed length limits, vent types (individual, wet, circuit, stack), AAVs, roof termination.

📋 Code

IECC C403 — HVAC Systems (Commercial)

Commercial HVAC efficiency: equipment minimums, economizers, energy recovery, controls, duct insulation.

📋 Code

IECC R402 — Building Thermal Envelope (Residential)

Insulation R-values and fenestration U-factors by climate zone for residential buildings.

← Back to Knowledge Garden