Practice Test Geeks(CRC) Certified Residential Contractor Practice Test
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Building Codes & Standards Flashcards

7 cards from real CRC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Building Codes & Standards flashcards as text

  1. Under the International Residential Code (IRC), what is the minimum ceiling height required for habitable rooms?

    Answer: 7 feet 0 inches

    The IRC requires a minimum ceiling height of 7 feet for habitable rooms in residential construction.

  2. Which code section governs the minimum stair tread depth for residential construction under the IRC?

    Answer: IRC R311.7.5.2

    IRC Section R311.7.5.2 specifies that residential stair treads must have a minimum depth of 10 inches.

  3. A homeowner wants to convert an unfinished basement into a bedroom. What is the minimum egress window opening required by the IRC?

    Answer: 5.7 square feet net clear opening

    The IRC requires a minimum net clear opening of 5.7 square feet for basement sleeping room egress windows.

  4. Under the IRC, smoke alarms in new residential construction must be interconnected so that when one sounds, all sound. This requirement applies to homes with how many stories?

    Answer: All new residential construction

    The IRC requires interconnected smoke alarms in all new residential construction regardless of size or number of stories.

  5. What is the maximum slope allowed for a residential accessible route under the ADA/FHA guidelines when incorporated into IRC-compliant construction?

    Answer: 1:12 (8.33%)

    Accessible ramps must not exceed a 1:12 slope (8.33%), meaning 1 inch of rise for every 12 inches of horizontal run.

  6. Under IRC provisions, what is the minimum R-value required for insulation in an exterior wall in a Climate Zone 5?

    Answer: R-20 + R-5 continuous

    Climate Zone 5 requires R-20 cavity insulation plus R-5 continuous insulation (or equivalent) in exterior walls per IRC energy provisions.

  7. A contractor is building a deck attached to a residence. Under the IRC, what is the minimum post size required for a freestanding deck post supporting a beam?

    Answer: 4x4 lumber

    The IRC generally permits 4x4 posts for deck construction, though height and load may require larger sizes per prescriptive tables.