B2 Commercial Building Inspector Quiz by mike.stahl | May 22, 2026 Welcome to your B2 Commercial Building Inspector Quiz Name Email 1. What range is normally specified for the compressive strength of precast and prestressed concrete elements? 2,500 to 3,500 psi 3,000 to 4,000 psi 4,000 to 5,000 psi Below 2,000 psi None Show Hint Concrete or grout in foundations shall have a specified compressive strength (f’c) not less than the largest applicable value indicated in Table 1808.8.1. Where concrete or grout is to be pumped, the mix design including slump shall be adjusted to produce a pumpable mixture. 2024 IBC – Chapter 18, Soils and Foundations. Section 1808 Foundations. 1808.8.1 Concrete or grout strength and mix proportioning. Table 1808.8.1 Minimum Specified Compressive Strength (fc) of Concrete or Grout. 2. ________ is the propagation of flame over a surface. Flame spread Flame surface spread rate Flame spread index Expanded flame None Show Hint FLAME SPREAD. The propagation of flame over a surface. 2024 IBC – Chapter 2, Definitions. Section 202, Definitions. 3. Permanent fall arrest/restraint anchorage connector devices, affixed for use during the entire roof covering lifetime can be used in lieu of guards, so long as the devices ________ . extends a min. of 30 inches beyond each end of components comply with ANSI/ASSE Z 359.1 are placed a min. of 10 feet from the roof edge of the walking surface A through C None Show Hint Guards shall be provided where various components that require service are located within 10 feet (3048 mm) of a roof edge or open side of a walking surface and such edge or open side is located more than 30 inches (762 mm) above the floor, roof or grade below. The guard shall extend not less than 30 inches (762 mm) beyond each end of such components. The guard shall be constructed so as to prevent the passage of a sphere 21 inches (533 mm) in diameter. Exception: Guards are not required where personal fall arrest anchorage connector devices that comply with ANSI/ASSE Z 359.1 are installed. 2024 IBC – Chapter 10, Means of Egress. Section 1015 Guards. 1015.6 Mechanical equipment, systems and devices. 4. A facility within a dwelling unit where 5 or fewer children receive daycare must be classified as a ________ occupancy. Group E Group A-3 Group B Group R-3 None Show Hint A facility such as the above within a dwelling unit and having five or fewer children receiving such day care shall be classified as a Group R-3 occupancy or shall comply with the International Residential Code. 2024 IBC – Chapter 3, Occupancy Classification and Use. Section 305, Educational Group E. 305.2 Group E, day care facilities. 305.2.3 Five or fewer children in a dwelling unit. 5. Concrete and solid masonry footings for masonry chimneys must be a min. of ________ thick. 10 inches 12 inches 8 inches 6 inches None Show Hint Footings for masonry chimneys shall be constructed of concrete or solid masonry not less than 12 inches (305 mm) thick and shall extend not less than 6 inches (152 mm) beyond the face of the foundation or support wall on all sides. Footings shall be founded on natural undisturbed earth or engineered fill below frost depth. In areas not subjected to freezing, footings shall be not less than 12 inches (305 mm) below finished grade. 2024 IBC – Chapter 21, Masonry. Section 2113 Masonry Chimneys. 2113.2 Footings and foundations. 6. Roof assemblies that are effective against ________ fire-test exposure are classified as Class C roof assemblies. extremely high moderate light high None Show Hint Class C roof assemblies are those that are effective against light fire-test exposure. Class C roof assemblies and roof coverings shall be listed and identified as Class C by an approved testing agency. 2024 IBC – Chapter 15, Roof Assemblies and Rooftop Structures. Section 1505 Fire Classification. 1505.4 Class C roof assemblies. 7. Projections are not permitted if there is a fire separation distance of ________ . 2-4 feet 0-2 feet 6-8 feet 4-6 feet None Show Hint Projections are not permitted if there is a fire separation distance is 0 to 2 feet. 2024 IBC – Chapter 7, Fire and Smoke Protection Features. Section 705 Exterior Walls. 705.2 Projections. Table 705.2 Minimum distance of projection. 8. Fire walls must extend from the foundation to a termination point of ________ min. above both adjacent roofs. 15 inches 60 inches 30 inches 45 inches None Show Hint Fire walls shall extend from the foundation to a termination point not less than 30 inches (762 mm) above both adjacent roofs. Exceptions: 1. Stepped buildings in accordance with Section 706.6.1. 2. Two-hour fire-resistance-rated walls shall be permitted to terminate at the underside of the roof sheathing, deck or slab, provided that all of the following requirements are met: 2.1. The lower roof assembly within 4 feet (1220 mm) of the wall has not less than a 1-hour fire-resistance rating and the entire length and span of supporting elements for the rated roof assembly has a fire-resistance rating of not less than 1 hour. 2.2. Openings in the roof shall not be located within 4 feet (1220 mm) of the fire wall. 2.3. Each building shall be provided with not less than a Class B roof covering. 3. Walls shall be permitted to terminate at the underside of noncombustible roof sheathing, deck or slabs where both buildings are provided with not less than a Class B roof covering. Openings in the roof shall not be located within 4 feet (1220 mm) of the fire wall. 4. In buildings of Types III, IV and V construction, walls shall be permitted to terminate at the underside of combustible roof sheathing or decks, provided that all of the following requirements are met: 4.1. Roof openings are not less than 4 feet (1220 mm) from the fire wall. 4.2. The roof is covered with a minimum Class B roof covering. 4.3. The roof sheathing or deck is constructed of fire-retardant-treated wood for a distance of 4 feet (1220 mm) on both sides of the wall or the roof is protected with 5/8-inch (15.9 mm) Type X gypsum board directly beneath the underside of the roof sheathing or deck, supported by not less than 2-inch (51 mm) nominal ledgers attached to the sides of the roof framing members for a distance of not less than 4 feet (1220 mm) on both sides of the fire wall. 5. In buildings designed in accordance with Section 510.2, fire walls located above the 3-hour horizontal assembly required by Section 510.2, Item 1 shall be permitted to extend from the top of this horizontal assembly. 6. Buildings with sloped roofs in accordance with Section 706.6.2. 2024 IBC – Chapter 7, Fire and Smoke Protection Features. Section 706 Fire Walls. 706.6 Vertical continuity. 9. The minimum fire damper rating for a fire-resistance-rated assemblies that are greater than 3 hour is ________ . 4 hour 2 hour 1 hour 3 hour None Show Hint The minimum fire damper rating for fire-resistance-rated assemblies that are greater than 3 hour is 3 hour. 2024 IBC – Chapter 7, Fire and Smoke Protection Features. Section 717 Ducts and Air Transfer Openings. 717.3 Damper testing, ratings and actuation. 717.3.2 Damper rating. 717.3.2.1 Fire damper ratings. Table 717.3.2.1 Fire Damper Rating. 10. Childrens play structures must have a max. area of ________ . 300 square feet 200 square feet 100 square feet 600 square feet None Show Hint Play structures shall be not greater than 600 square feet (56 m2) in area, unless a special investigation, acceptable to the building official, has demonstrated adequate fire safety. 2024 IBC – Chapter 4, Special Detailed Requirements Based on Occupancy and Use. Section 424 Play Structures. 424.5 Area limits. 11. Openings in shear panels that materially affect their strength must have their edges adequately reinforced to transfer all ___________. compressive stress shear stress tensile stress A through C None Show Hint Openings in shear panels that materially affect their strength shall be detailed on the plans and shall have their edges adequately reinforced to transfer all shearing stresses. 2024 IBC – Chapter 23, Wood. Section 2305 General Design Requirements for Lateral Force-Resisting Systems. 2305.1 General. 2305.1.1 Openings in shear panels. 12. Which of the following Group A occupancies includes assembly uses intended for food and/or drink consumption? Group A-1 Group A-4 Group A-2 Group A-3 None Show Hint Group A-2 occupancy includes assembly uses intended for food and/or drink consumption including, but not limited to: Banquet halls Casinos (gaming areas) Nightclubs Restaurants, cafeterias and similar dining facilities (including associated commercial kitchens) Taverns and bars 2024 IBC – Chapter 3, Occupancy Classification and Use. Section 303, Assembly Group A. 303.3 Assembly Group A-2. 13. In metal roof panel installation, the minimum slope for lapped, nonsoldered seam metal roof panels without applied lap sealant must be ________ . 4 units vertical in 12 units horizontal 5 units vertical in 12 units horizontal 2 units vertical in 12 units horizontal 3 units vertical in 12 units horizontal None Show Hint Minimum slopes for metal roof panels shall comply with the following: 1. The minimum slope for lapped, nonsoldered seam metal roof panels without applied lap sealant shall be three units vertical in 12 units horizontal (25-percent slope). 2. The minimum slope for lapped, nonsoldered seam metal roof panels with applied lap sealant shall be one-half unit vertical in 12 units horizontal (4-percent slope). Lap sealants shall be applied in accordance with the approved manufacturers installation instructions. 3. The minimum slope for standing-seam metal roof panel systems shall be one-quarter unit vertical in 12 units horizontal (2-percent slope). 2024 IBC – Chapter 15, Roof Assemblies and Rooftop Structures. Section 1507 Requirements for Roof Coverings. 1507.4 Metal roof panels. 1507.4.2 Deck slope. 14. In Group H-5 occupancies, HPM rooms and gas rooms must be separated from other areas by fire barriers with a min. fire-resistance rating of ________ where the area is 300 square feet or more. 3 hours 4 hours 1 hour 2 hours None Show Hint HPM rooms and gas rooms shall be separated from other areas by fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 711, or both. The fire-resistance rating shall be not less than 2 hours where the area is 300 square feet (27.9 m2) or more and not less than 1 hour where the area is less than 300 square feet (27.9 m2). 2024 IBC – Chapter 4, Special Detailed Requirements Based on Occupancy and Use. Section 415 Groups H1, H-2, H-3, H-4 and H-5. 415.11 Group H-5. 415.11.6 HPM rooms, gas rooms, liquid storage room construction. 15. Posts supporting permanent structures and supported by a concrete footing that is in direct contact with the earth must be of ___________. Neither A nor B preservative-treated wood Either A or B naturally durable None Show Hint Posts or columns supporting permanent structures and supported by a concrete or masonry slab or footing that is in direct contact with the earth shall be of naturally durable or preservative- treated wood. Exception: Posts or columns that meet all of the following: 1. Are not exposed to the weather, or are protected by a roof, eave, overhang, or other covering if exposed to the weather. 2. Are supported by concrete piers or metal pedestals projected not less than 1 inch (25 mm) above the slab or deck and are separated from the concrete pier by an impervious moisture barrier. 3. Are located not less than 8 inches (203 mm) above exposed earth. 2024 IBC – Chapter 23, Wood. Section 2304 General Construction Requirements. 2304.12 Protection against decay and termites. 2304.12.2 Other locations. 2304.12.2.2 Posts or columns. Previous Start Quiz Next Time's up