The West Virginia Plumbing Contractor Examination is the Contractor Licensing Board / Prov trade exam. Which official reference set does the 2026.05.07 bulletin list for that open-book exam?
General Knowledge
Question · Easy
OSHA fall heights, to scale
Short
Per IPC 2018 Section 301.7, if a manufacturer's installation instructions conflict with a requirement of the code, which provision applies?
IPC 2018 Chapter 2 defines developed length of piping as which measurement?
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A drainage and vent system is water-tested in sections per IPC 2018 Section 312.2. What is the minimum test head and minimum hold time for each section?
Question · Medium
Per IPC 2018 Section 312.3, which statement about drainage and vent air testing is correct?
Six feet: a hard-hat anthem
A plumber is selecting a test gauge for a 5 psi drainage air test. Per IPC 2018 Section 312.1.1, what is the maximum permitted gauge increment?
Per IPC 2018 Section 303.3, plastic pipe, fittings, and components used in a plumbing system shall be third-party certified as conforming to which standard?
Per IPC 2018 Section 301.6, plumbing systems are prohibited in an elevator shaft or elevator equipment room except that floor drains, sumps, and sump pumps at the base of the shaft are permitted when they are which of the following?
Per IPC 2018 Table 704.1, what is the minimum slope of a 2-inch horizontal drainage pipe that is not upstream of a grease interceptor?
A 4-inch soil stack turns out to the building drain. Per IPC 2018 Section 704.3, a horizontal branch may first connect to that building drain no closer than which distance downstream of the stack?
Question · Hard
Per IPC 2018 Section 405.3.1, the centerline of a non-accessible water closet shall be not less than how far from a side wall or partition?
Fixtures And Fittings
On an accessible water closet in a commercial toilet room, ICC A117.1 as referenced by IPC 2018 Section 404 requires the water-closet centerline to be how far from the adjacent side wall or partition?
For an accessible lavatory serving a public restroom, what is the maximum height of the lavatory rim or counter surface above the finished floor?
Per IPC 2018 Section 417.4, a shower compartment shall have not less than which interior plan dimension and area?
Per IPC 2018 Table 604.5, what is the minimum size of the fixture water-supply pipe serving a residential lavatory?
Per IPC 2018 Table 604.4, what is the maximum flow rate of a showerhead?
IPC 2018 Section 1101.2 states where storm drainage is required, and Section 1101.3 prohibits draining storm water into sewers intended for sewage only. Which statement matches those rules?
Storm Drainage
Per IPC 2018 Section 1108.1, a secondary (emergency) roof drainage system is required when which condition exists?
Per IPC 2018 Section 1108.2, the secondary roof drainage system shall do which of the following?
Per IPC 2018 Section 1105.1, a roof-drain strainer that stands above the roof shall extend not less than how far above the adjacent roof surface, and shall have an available inlet area of not less than which multiple of the connected conductor area?
Per IPC 2018 Section 703.6, where the public sewer is a combined sanitary and storm system, how shall the building sanitary sewer be connected?
A new low-pressure natural-gas piping system will operate at about 7 inches water column. Per IFGC 2018 Section 406.4.1, what is the minimum test pressure?
Fuel Gas Systems
Per IFGC 2018 Section 406.4.2, what is the minimum test duration for a gas piping system that has a volume less than 10 cubic feet, or for a system in a single-family dwelling?
Per IFGC 2018 Section 408.4, a sediment trap is required at which appliances, installed how?
Per IFGC 2018 Section 409.5, an appliance shutoff valve shall be located in the same room as the appliance and within what maximum distance of the appliance?
Per IFGC 2018 Section 411.1.3, a listed gas appliance connector shall not exceed what length?
Per IFGC 2018 Section 310.2, CSST gas piping shall be bonded to the electrical service grounding electrode system with a bonding jumper not smaller than which conductor?
Per IFGC 2018 Section 404.12, underground gas piping shall be installed not less than how far below grade, except individual lines to outdoor lights, grills, and similar appliances?
Per IFGC 2018 Section 404.17.3, underground plastic gas pipe shall be installed with which tracer?
Using the IFGC indoor-combustion-air two-permanent-openings method, each opening shall have a free area of not less than 1 square inch per 1,000 Btu/h of input, and the openings shall be located how?
Per IFGC 2018 Table 415.1, what is the maximum support spacing for 1/2-inch steel gas pipe?
Under OSHA 1926 Subpart P, a protective system (sloping, shoring, or shielding) is required for employees in an excavation unless the excavation is entirely in stable rock or is less than which depth and a competent person finds no indication of a potential cave-in?
Safety
A plumber is working in a 6-foot-deep trench. Per OSHA 1926.651, a stairway, ladder, ramp, or other safe means of egress is required so that no employee has to travel more than how far laterally to reach it?
Per OSHA 1926.651, excavated spoil and other materials shall be kept at least how far from the edge of an excavation?
A portable ladder is used to access a roof to set a gas water-heater vent. Per OSHA 1926.1053, the side rails shall extend not less than how far above the landing, and the ladder shall be set at approximately which angle?
In construction, OSHA generally requires fall protection when an employee is on a walking-working surface with an unprotected side or edge that is how far above a lower level?
Before soldering, threading, or cutting pipe in a space that could contain fuel gas, what is the correct safety sequence?
A plumber must enter a sewage ejector basin to replace a pump. The basin is large enough to bodily enter, has limited entry/exit, and is not designed for continuous occupancy. Which OSHA classification and control is correct?
An isometric shows a 3-inch soil stack turning 90 degrees into a horizontal building drain. Which fitting is permitted for that vertical-to-horizontal change of direction per IPC 2018 Table 706.3?
Isometrics
A DWV isometric shows a lavatory fixture drain entering a vertical stack through a sanitary tee. The flow is horizontal into vertical. Is that fitting use permitted?
A dwelling-unit isometric shows two private bathroom groups, each with a 1.6-gpf water closet, plus one domestic kitchen sink and one residential clothes washer. Using IPC 2018 Table 709.1 group and fixture values, what is the total drainage load?
A public toilet-room isometric shows four public 1.6-gpf water closets, four lavatories, and two urinals that use 1 gallon per flush or less. What is the total DFU load on the horizontal branch?
The 24-DFU public toilet-room branch in the previous takeoff is a horizontal fixture branch (not a branch of the building drain). Using IPC 2018 Table 710.1(2), what is the smallest pipe that may serve that branch?
A horizontal fixture branch on an isometric serves only one private 1.6-gpf bathroom group (5 DFU). Table 710.1(2) allows 6 DFU on a 2-inch horizontal branch. What is the minimum size of this branch?
A three-story stack on an isometric receives 16 DFU in each branch interval (48 DFU total). Using IPC 2018 Table 710.1(2), what is the smallest soil stack that may be used?
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