On an accessible water closet in a South Carolina commercial toilet room, ICC A117.1 as referenced by the 2021 IPC requires the water-closet centerline to be how far from the adjacent side wall or partition?
Ada Accessibility
Question · Easy
For an accessible lavatory serving a public restroom, what is the maximum height of the lavatory rim or counter surface above the finished floor?
Question · Medium
In the 2021 IPC, developed length of piping is measured along which path?
General Plumbing Knowledge
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A roof-mounted water heater sits 28 feet above the building water meter. Approximately how much static pressure is lost between the meter and the heater inlet? Use 0.433 psi per foot of elevation.
A 45-degree offset must gain 12 inches of offset. Using the constant from Mathematics for Plumbers and Pipefitters, what travel length is required?
Using the plumber’s cylinder formula gallons = 0.0408 × d² × L, how many gallons does 80 feet of 4-inch pipe hold if d is taken as 4.00 inches?
Before excavating for a new building sewer in South Carolina, the excavator must notify SC 811 within which window?
Under the current SC 811 excavator rules, the tolerance zone around a marked underground facility is measured as which of the following?
On a commercial site, white temporary marking paint is used by the excavator to identify which of the following?
Under the 2021 IPC as adopted in South Carolina, a plumbing permit is required for which of the following?
General Plumbing Regulations
When a DWV system is tested with water in accordance with the 2021 IPC, the system shall hold a water column of not less than which height for 15 minutes?
A 2-inch water-distribution system of copper tubing is tested with air. What is the minimum air-test pressure required by the 2021 IPC?
Water-service piping installed underground outside a building shall be buried not less than 12 inches below grade and not less than how far below the frost line, unless the pipe is otherwise protected from freezing?
Per 2021 IPC Table 308.5, what is the maximum horizontal hanger spacing for 3-inch Schedule 40 PVC drain pipe?
Hangers And Supports
Which copper tube type is listed in the 2021 IPC for water-distribution piping above ground and is the type most commonly specified for commercial interior water mains?
Materials
Which statement about PVC Schedule 40 DWV pipe is correct under the 2021 IPC?
Cast-iron soil pipe installed underground as a building drain must be supported on a firm bed. Which additional installation rule applies?
When solvent-cementing PVC-DWV joints, the 2021 IPC requires a primer that conforms to ASTM F656. That primer is identified in the field by which color?
Joints And Connections
Solder used on copper water-distribution joints in a potable system shall comply with which requirement?
A hubless cast-iron joint on a 4-inch commercial stack shall be made with which of the following?
When making a threaded steel-pipe joint, pipe-joint compound or tape shall be applied in which manner?
For a non-accessible water closet, the 2021 IPC requires not less than which side clearance from the fixture centerline to a side wall, partition, or vanity?
Fixtures And Equipment
A commercial shower compartment, other than an accessible stall built to A117.1, shall have a minimum interior cross-sectional area of 900 square inches and a minimum interior dimension of which value?
In an office occupancy, urinals may be substituted for required water closets, but the number of water closets shall not be reduced below which fraction of the number required by IPC Table 403.1?
Each public or employee water closet shall be installed in a separate compartment with walls or partitions and a door. What is the purpose of that IPC requirement?
The discharge pipe from a water-heater temperature-and-pressure relief valve shall comply with which installation rule?
Water Heaters
Where a storage water heater is installed in a location in which leakage would cause damage, a drain pan is required. What is the minimum size of the pan drain?
A commercial water heater is installed on a water-distribution system that already has a pressure-reducing valve at the meter. What additional device is required to control thermal expansion?
A storage water heater supplied from the bottom of the tank, where the storage tank is above the fixture outlets it serves, requires which additional protection?
A gas-fired storage water heater that does not have a manufacturer-incorporated sediment trap shall have a sediment trap installed in which location?
Per 2021 IPC Table 604.5, what is the minimum size of the fixture supply pipe to a lavatory?
Water Supply And Distribution
What is the minimum fixture-supply size to a water closet served by a flushometer valve?
The developed length of hot-water piping from the source of hot water to the fixtures that require hot water shall not exceed which distance unless a recirculating system or heat-traced piping is provided?
IPC Table 604.3 requires which minimum flow pressure at a flushometer-valve water closet?
A wall hydrant or hose bibb on a commercial building shall be protected against backflow by which device?
Backflow Prevention
What is the minimum slope of a 4-inch horizontal sanitary drain, per 2021 IPC Table 704.1?
Sanitary Drainage Systems
The minimum size of any building drain that serves a water closet is which of the following?
A building drain sloped 1/4 inch per foot carries 50 drainage fixture units and no unusual continuous flow. Using 2021 IPC Table 710.1(1), what is the smallest pipe that may be used?
A soil stack may be reduced in size in the direction of flow as the accumulated load decreases, but the reduced section shall not be smaller than which of the following?
Question · Hard
A 4-inch building drain makes a 90-degree horizontal change of direction. Under 2021 IPC 708.1.4, when is a cleanout required at that fitting?
Building sewers smaller than 8 inches shall have cleanouts at intervals not exceeding which distance?
Cleanouts
A cleanout is required at the junction of the building drain and the building sewer. That cleanout shall be located within what distance of the junction?
Waste from a commercial food-handling fixture such as a pot sink or a food-prep sink shall discharge to the drainage system through which arrangement?
Indirect And Special Waste
A clothes-washer standpipe shall extend above the trap weir not less than 18 inches and not more than which height?
An individual vent serving a 3-inch fixture drain, with a developed length of 20 feet, shall be not smaller than which size?
Sanitary Venting
An individual vent with a developed length of 48 feet serves a 2-inch drain. What is the minimum vent size?
Every dry vent shall rise vertically to a point not less than how far above the flood-level rim of the highest trap or trapped fixture being vented?
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