2021 B2 Commercial Building Inspector Exam Quiz Welcome to your free 2021 B2 Commercial Building Inspector Exam Quiz REQUIRED - Enter your email address to receive a printable copy of your test results. 1. Egress doors shall be side-hinged swinging doors. When swinging into an aisle or corridor, the doors shall not reduce the required width of the aisle or corridor by more than ________ during the course of the swing. 3 inches 7 inches One-half Two-thirds None 2. When casting concrete against and permanently exposed to earth, what is the minimum required concrete cover for the reinforcing steel? 1.5 inches 2 inches 3 inches 4 inches None 3. What is the minimum permitted roof slope for the installation of asphalt shingles? 1 unit vertical in 12 units horizontal 2 units vertical in 12 units horizontal 3 units vertical in 12 units horizontal 4 units vertical in 12 units horizontal None 4. The maximum slope for an accessible ramp in new construction is: 1 unit vertical in 8 units horizontal (1:8) 1 unit vertical in 10 units horizontal (1:10) 1 unit vertical in 12 units horizontal (1:12) 1 unit vertical in 20 units horizontal (1:20) None 5. Glazing in an individual fixed or operable panel adjacent to a door where the nearest exposed edge of the glazing is within ________ inches of either vertical edge of the door in a closed position shall be considered a hazardous location (requiring safety glazing). 12 inches 24 inches 36 inches 48 inches None 6. What is the minimum required thickness for a masonry parapet wall? 4 inches 6 inches 8 inches 12 inches None 7. Class A interior wall and ceiling finishes must have a flame spread index of: 0 - 25 26 - 75 76 - 200 201 - 500 None 8. Under the IBC, special inspections are MANDATORY for which of the following activities? Installation of standard residential drywall Placement of reinforcing steel in a commercial concrete structural slab Painting of interior walls in a Group E occupancy Installation of carpet over a concrete slab None 9. Thermal and acoustical insulation, other than foam plastic, is permitted to be installed in buildings of Type I or II construction, provided the insulation has a maximum flame spread index of ________ . 20 25 30 35 None 10. Enclosed attics and enclosed rafter spaces must have cross ventilation. The minimum net free ventilating area shall be ________ of the area of the space ventilated.inches. 1/100 1/150 1/300 1/500 None 11. Which Type of Construction requires that all structural elements (exterior walls, interior bearing walls, roofs, etc.) be constructed of noncombustible materials? Types I and II Type III Type IV Type V None 12. In wood framing, any stud in an exterior wall or interior bearing partition may be cut or notched to a depth not exceeding what percentage of its width? 25% 40% 50% 60% None 13. What is the minimum required depth of a footing beneath the undisturbed ground surface (excluding frost protection requirements)? 6 inches 12 inches 18 inches 24 inches None 14. For a stairway serving an occupant load of 50 or more, what is the minimum required width of the stairway? 36 inches 44 inches 48 inches 60 inches None 15. Every issued permit shall become invalid if the work authorized by the permit is suspended or abandoned for a period of how many days after the work is commenced? 30 days 90 days 180 days 270 days None 16. In combustible floor/ceiling assemblies, draftstopping shall be installed to subdivide the concealed space into areas not exceeding: 500 square feet 1,000 square feet 2,500 square feet 3,000 square feet None 17. Which type of fire-resistance-rated assembly is required to have sufficient structural stability under fire conditions to allow the collapse of construction on either side without causing the collapse of the assembly itself? Fire barrier Fire partition Fire wall Smoke barrier None 18. In general, the aggregate area of a mezzanine shall not exceed what percentage of the floor area of the room in which it is located? 25% (1/4) 33.3% (1/3) 50% (1/2) 66.6% (2/3) None 19. In an unsprinklered Group B (Business) occupancy, what is the maximum allowable length for a dead-end corridor? 20 feet 25 feet 50 feet 75 feet None Prove you are human 20. A new restaurant is being constructed with an occupant load of 250 people. Under which occupancy classification does this fall? Group B Group M Group A-2 Group A-3 None Time is Up!
