Drainage
Under normal conditions, this is the minimum slope per foot for horizontal drainage piping
What is 1/4 inch per foot?
UPC: §708.1 — Grade of Horizontal Drainage Piping
Before offsetting horizontally, a vent normally must rise this far above the fixture's flood-level rim.
What is 6 inches?
UPC: §905.3 — Vent Pipe Rise
When static water pressure exceeds this pressure, the UPC requires an approved pressure regulator.
What is 80 psi?
UPC: §608.2 — Excessive Water Pressure
Water heaters must be protected against horizontal displacement caused by earthquakes using this.
What is strapping?
UPC: §507.2 — Seismic Provisions
This letter-shaped trap configuration is specifically prohibited by the UPC.
What is an S-trap?
UPC: §1004.1 — Prohibited
An inspector checks a newly installed 2-inch horizontal drain and wants to verify this minimum amount of fall per foot.
What is 1/4 inch per foot?
UPC: §708.1
When 1/4 inch per foot is impractical, horizontal drainage piping of this diameter or larger may be reduced to 1/8 inch per foot with AHJ approval.
What is 4 inches?
UPC: §708.1
A vent penetrating a roof must normally terminate at least this far above the roof.
What is 6 inches?
UPC: §906.1 — Roof Termination
When a pressure regulator is installed, this device is installed downstream to control pressure caused by thermal expansion.
What is an expansion tank?
UPC: §608.2
Water-heater seismic straps are installed within these two portions of the tank.
What are the upper one-third and lower one-third?
UPC: §507.2
A fixture trap normally must maintain a liquid seal between these two depths.
What are 2 inches and 4 inches?
UPC: §1005.1 — General
An inspector rejects a sanitary tee installed on its back for a horizontal-to-horizontal drainage connection. Name one fitting the plumber could use instead.
What is a wye or combination wye and 1/8 bend?
UPC: §706.3
For a horizontal-to-horizontal drainage connection, name one of the common fittings permitted to make the change in direction.
What is a wye or combination wye and 1/8 bend?
UPC: §706.3 — Horizontal to Horizontal
Unless it terminates at least 3 feet above it, a plumbing vent must terminate at least this horizontal distance from an openable window or door.
What is 10 feet?
UPC: §906.2 — Clearance
A check valve, backflow preventer, or other normally closed device prevents building pressure from dissipating back into the water main. The UPC requires this to control thermal expansion.
What is an approved expansion tank or other approved device having a similar function?
UPC: §608.3 — Expansion Tanks and Combination Temperature and Pressure-Relief Valves
The lower seismic strap must be at least this far above the water heater controls.
What is 4 inches?
UPC: §507.2
This is the maximum developed length of a 2-inch trap arm.
What is 5 feet OR 60 inches?
UPC: Table 1002.2 — Horizontal Lengths of Trap Arms
An inspector sees a plumbing vent only 5 feet horizontally from an openable bedroom window. Rather than relocating the vent 10 feet away, the plumber could terminate it at least this far above the opening.
What is 3 feet?
UPC: §906.2
During a sectional water test of a DWV system, this is the minimum required head of water.
What is 10 feet?
UPC: §712.2 — Water Test
A vent terminating near a lot line must be at least this distance from that lot line in every direction.
What is 3 feet?
UPC: §906.2
An atmospheric vacuum breaker normally must be installed at least this far above downstream piping and the flood-level rim.
What is 6 inches?
UPC: Table 603.2 — Backflow Prevention Devices, Assemblies, and Methods
When a water-heater drain pan is required, the drain from that pan must be at least this diameter.
What is 3/4 inch?
UPC: §507.5 — Drainage Pan
This is the maximum developed length of a 1½-inch trap arm.
What is 3 feet 6 inches or 42 inches?
UPC: Table 1002.2
An inspector rejects a 1½-inch lavatory trap arm measuring 4 feet from the trap to the vent. This is the maximum developed length allowed.
What is 3 feet 6 inches of 42 inches?
UPC: Table 1002.2
During a permitted DWV air test, this pressure must be maintained without adding additional air for at least 15 minutes.
What is 5 psi?
UPC: §712.3 — Air Test
Vertical wet venting is limited to no more than this many fixtures.
What are four fixtures?
UPC: §908.1 — Vertical Wet Venting
This backflow assembly contains two independently acting check valves and a differential pressure relief valve.
What is a reduced-pressure principle backflow prevention assembly, or RPBA?
UPC: §603.3.7
A T&P discharge line terminating outdoors must terminate within this range above the ground.
What is 6 inches to 24 inches?
UPC: §608.5(3) — Discharge Piping
A trap arm smaller than 3 inches may change direction by no more than this amount without requiring a cleanout.
What is 90 degrees?
UPC: §1002.3 — Change of Direction
An inspector finds a vertical wet vent serving five fixtures. To comply with the UPC vertical wet-vent provision, the plumber must reduce the number of wet-vented fixtures to no more than this many.
What are four fixtures?
UPC: §908.1 — Vertical Wet Venting