Exam Practice Questions And Correct

Wisconsin Dwelling Contractor Qualifier Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• Which of the following is the primary purpose of the Wisconsin

Uniform Dwelling Code (UDC)?

• To regulate commercial building construction
• To ensure the safety, health, and welfare of dwelling occupants
• To control zoning and land use
• To manage environmental impact assessments
• To ensure the safety, health, and welfare of dwelling occupants

Rationale: The UDC establishes minimum standards for residential

construction to protect the safety, health, and welfare of occupants. 1 / 4

• When must a dwelling contractor obtain a permit before starting

work?

• Only for electrical work
• Only for projects over $50,000
• Before beginning any construction, alteration, or repair regulated by

the UDC

• Only for structural alterations
• Before beginning any construction, alteration, or repair regulated by the

UDC

Rationale: Permits ensure that all work meets the UDC standards and is

inspected for compliance.

• What is the minimum required ceiling height for habitable rooms in a

dwelling under the Wisconsin UDC?

• 6 feet 6 inches
• 7 feet 0 inches
• 7 feet 6 inches
• 8 feet 0 inches
• 7 feet 0 inches

Rationale: UDC specifies a minimum ceiling height of 7 feet for habitable

rooms to ensure adequate living space.

• Which type of insulation is generally required in exterior walls of new

dwellings?

A. R-11 2 / 4

B. R-13

C. R-19

D. R-21

B. R-13

Rationale: UDC specifies R-13 insulation for 2x4 exterior walls in new

dwellings to meet thermal efficiency requirements.

• What is the maximum spacing allowed for wood floor joists supporting

a typical residential floor?

• 12 inches on center
• 16 inches on center
• 24 inches on center
• 32 inches on center
• 16 inches on center

Rationale: Standard residential floor joist spacing is 16 inches on center to

provide adequate structural support.

• Which of the following is required for egress windows in a basement

bedroom?

• Minimum 20 inches width
• Minimum 5.7 square feet opening
• Minimum 18 inches height
• Maximum sill height of 72 inches 3 / 4

• Minimum 5.7 square feet opening

Rationale: UDC mandates a minimum net clear opening of 5.7 sq. ft for

emergency escape and rescue windows in basement bedrooms.

• How far must smoke alarms be installed from bathrooms containing a

bathtub or shower?

• 3 feet
• 5 feet
• 10 feet
• 12 feet
• 3 feet

Rationale: To reduce false alarms while still providing protection, smoke

alarms must be at least 3 feet from bathrooms with showers.

• Which of the following materials is NOT permitted for use as a

structural wall under the UDC?

• Concrete block
• Pressure-treated wood
• Particleboard
• Poured concrete
• Particleboard

Rationale: Particleboard is not permitted as a primary structural wall

material due to insufficient strength and moisture resistance.

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