Kansas City, MO Residential Building Contractor (C) Exam (ICC G13, 2018 IRC)

LABELED means an identifying mark of a nationally recognized testing laboratory or approved agency that maintains periodic inspection of production has been affixed, while LISTED means inclusion in a published list and APPROVED means acceptable to the building official.

REPAIR is reconstruction, replacement or renewal of part of an existing building for maintenance or to correct damage; ALTERATION is construction, retrofit or renovation other than repair or addition that requires a permit, and ADDITION is an extension or increase in floor area, number of stories or height.

A built-up roof covering is two or more layers of felt cemented together with a cap sheet, mineral aggregate, smooth coating or similar surfacing, while modified bitumen is one or more layers of polymer modified asphalt sheets and a single-ply membrane uses one layer of membrane material.

Where concrete is exposed to sulfate soils or solutions, Type V sulfate-resistant cement should be used in severe exposures and Type II in moderate exposures (Type III is high-early-strength, not sulfate-resisting).

Without fire sprinklers, unlimited unprotected openings in 0-hour-rated exterior walls require a fire separation distance of 5 feet or greater; for dwellings sprinklered throughout, exterior walls may be non-fire-resistance rated at a fire separation distance of 3 feet or greater.

Ends of each joist, beam or girder shall have not less than 1½ inches of bearing on wood or metal, but not less than 3 inches of bearing on masonry or concrete.

A stud in an exterior wall or bearing partition may be cut or notched to a depth not exceeding 25 percent of its width, while studs in nonbearing partitions may be notched up to 40 percent.

Any stud may be bored to a hole diameter not more than 60 percent of the stud width, but studs in exterior walls or bearing partitions bored over 40 percent and up to 60 percent must be doubled, with not more than two successive doubled studs bored.

Habitable space, hallways and portions of basements containing these spaces require not less than 7 feet, while bathrooms, toilet rooms and laundry rooms require not less than 6 feet 8 inches.

Emergency escape and rescue openings require a net clear opening of not less than 5.7 square feet, but grade floor or below-grade openings may be reduced to 5 square feet.

For cold-formed steel framed walls anchored with bolts instead of foundation anchor straps, bolts shall extend not less than 15 inches into masonry or not less than 7 inches into concrete.

Lintels supporting masonry veneer walls are held to the more stringent L/600, compared with L/360 for floor joists and L/240 for rafters having finished ceilings.

A walking surface becomes a RAMP by definition when its running slope is steeper than 1 unit vertical in 20 units horizontal; the 1:12 figure is the maximum permitted ramp slope, not the definition threshold.

Finely divided, uniformly distributed clay or silt in sand is not harmful up to 5 percent generally, but the limit is reduced to 3 percent for concrete subject to abrasion.