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Commercial Building Inspector B2 practice questions

217 free questions with answers and explanations.

Practice test
  1. 151.A commercial building inspector is performing a final inspection for a new 4-story Group A-3 assembly building. The building has a standpipe system. Which type of standpipe system is typically required for buildings exceeding 3 stories in height?General Administration, Permits, and Plans
  2. 152.A commercial building inspector is performing a final inspection for a new 5-story Group R-1 hotel. The building has a standpipe system. What is the minimum residual pressure required at the topmost outlet of a Class I or Class III standpipe system?General Administration, Permits, and Plans
  3. 153.A commercial building inspector is reviewing plans for a new 3-story Group B office building where the lowest occupied floor is 35 feet above the lowest level of fire department vehicle access. The building has an automatic sprinkler system throughout. What is the minimum required fire-resistance rating for the primary structural frame of this building, assuming Type II-A construction?General Administration, Permits, and Plans
  4. 154.A commercial building inspector is reviewing plans for a new 15-story Group B office building. The plans indicate that the building will have a mechanical ventilation system. What is the maximum permitted area per occupant for determining the ventilation requirements for a general office space?General Administration, Permits, and Plans
  5. 155.A commercial building inspector is reviewing plans for a new 7-story Group R-1 hotel. The building will have a continuous path of travel from guest rooms to the public way. What is the minimum required width for a corridor serving an occupant load of 250 in this building?General Administration, Permits, and Plans
  6. 156.A commercial building inspector is reviewing plans for a new 6-story Group B office building. The building will have an automatic sprinkler system throughout. What is the minimum required fire-resistance rating for the structural frame of this Type I-A construction?General Administration, Permits, and Plans
  7. 157.A commercial building inspector is reviewing plans for the replacement of a fire alarm control panel in an existing Group B office building. The building's occupancy classification and use will not change. Does this replacement project typically require a new building permit?General Administration, Permits, and Plans
  8. 158.A commercial building inspector is reviewing plans for a new 12-story Group B office building. The building will utilize a smoke control system. Which of the following is NOT a primary component of a typical smoke control system?General Administration, Permits, and Plans
  9. 159.A commercial building inspector is reviewing plans for a new 5-story Group B office building with a total floor area of 100,000 square feet. The building is of Type II-A construction. What is the maximum allowable area per floor for this building without area increases?General Administration, Permits, and Plans
  10. 160.A commercial building inspector is reviewing plans for a new 5-story Group B office building of Type II-A construction. The plans indicate the use of a Class B flame spread index for interior wall and ceiling finishes in the corridors. Is this acceptable?General Administration, Permits, and Plans
  11. 161.A commercial building inspector is reviewing plans for a new 2-story Group B office building with an occupant load of 150 on the second floor. The building is equipped with an automatic sprinkler system. What is the minimum number of exits required from the second floor?General Administration, Permits, and Plans
  12. 162.A commercial building inspector is reviewing plans for a new 8-story Group R-1 hotel. The building has an atrium. What is the minimum required vertical separation of the openings in the atrium enclosure between floors?General Administration, Permits, and Plans
  13. 163.A commercial building inspector is reviewing plans for a new three-story office building. The plans indicate that the exterior walls are constructed of wood structural panels. What is the minimum nominal thickness required for wood structural panel sheathing used as a wall covering, when fasteners are spaced at 6 inches on center, on studs spaced at 24 inches on center?Wall Construction and Wall Coverings
  14. 164.A commercial building inspector is reviewing the design for a cold-formed steel framed exterior wall. The design specifies 18-gauge (0.048 inch design thickness) C-shaped studs with a depth of 3-5/8 inches, spaced at 16 inches on center. Per IBC Section 2211.1.1, what is the maximum stud depth permitted for cold-formed steel wall studs when the nominal stud thickness is 0.048 inch?Wall Construction and Wall Coverings
  15. 165.An inspector is reviewing a proposed exterior insulated finish system (EIFS) for a commercial building. The EIFS is specified to use drainage EIFS. What type of weather-resistive barrier is typically required behind a drainage EIFS system, as per general IBC requirements for exterior walls?Wall Construction and Wall Coverings
  16. 166.A commercial building inspector is examining the installation of a non-fire-resistance-rated interior wall in an office building. The wall is constructed with wood studs. What is the maximum permitted spacing for 2x4 wood studs in a non-bearing interior wall, when gypsum board is applied to both sides, assuming typical construction practices?Wall Construction and Wall Coverings
  17. 167.During an inspection of a newly constructed commercial building, an inspector observes a concrete wall being formed. The concrete is specified to be normal-weight concrete with a minimum specified compressive strength (f'c) of 3,000 psi. What is the minimum required specified compressive strength for concrete used in walls, according to IBC Section 1905.1.1, unless otherwise specified by a qualified design professional?Wall Construction and Wall Coverings
  18. 168.A commercial building inspector is evaluating the fire-resistive integrity of a 2-hour rated fire wall separating two adjacent buildings. An opening is proposed in this fire wall for a conveyor system. What is the maximum aggregate area of openings permitted in a 2-hour fire wall in any 100 square feet of wall area?Wall Construction and Wall Coverings
  19. 169.A commercial building inspector is reviewing the fire-resistive construction for an interior exit stairway wall in a five-story office building. The building is Type IIIA construction. What is the minimum fire-resistance rating required for this interior exit stairway wall?Wall Construction and Wall Coverings
  20. 170.A commercial building inspector is evaluating the fire-stopping at a penetration through a 1-hour fire-resistance-rated wood-framed wall. The penetration is for a noncombustible metallic pipe. What is the minimum required fire-resistance rating for the fire-stopping material around this penetration?Wall Construction and Wall Coverings
  21. 171.A commercial building inspector is reviewing the exterior wall finishes for a new retail store. The plans specify stucco applied over a wood-framed wall. What is the minimum number of layers of weather-resistive barrier required behind the stucco, where the lath and plaster are not separated from the sheathing by an air space?Wall Construction and Wall Coverings
  22. 172.An inspector observes a newly installed exterior wall covering on a commercial building. The covering consists of a masonry veneer with an air space. What is the minimum required clear air space between the masonry veneer and the sheathing, assuming no other specific drainage or ventilation requirements are stated?Wall Construction and Wall Coverings
  23. 173.A commercial building inspector is reviewing the plans for an exterior wall constructed with wood-based structural sheathing. The sheathing is being used as a part of a shear wall. What is the minimum required penetration of fasteners into wood framing members for wood structural panel sheathing, when a nail method is used?Wall Construction and Wall Coverings
  24. 174.An inspector is checking the installation of a fire door assembly in a 1-hour fire-resistance-rated corridor wall. The door is a single-panel, swinging fire door. What is the minimum hourly fire protection rating required for this fire door assembly?Wall Construction and Wall Coverings
  25. 175.A commercial building inspector is reviewing plans for a parapet wall on a new commercial building with a membrane roof. What is the minimum height required for a parapet wall above the roof surface, as measured to the top of the parapet, for buildings not exceeding 30 feet in height?Wall Construction and Wall Coverings
  26. 176.A commercial building inspector is reviewing the plans for a new building with interior walls constructed of masonry. The plans indicate that hollow masonry units are used. What is the minimum nominal thickness for a non-bearing hollow masonry interior wall in a commercial building, according to IBC Section 2109.2?Wall Construction and Wall Coverings
  27. 177.A commercial building inspector is reviewing the fire-resistive design of a 3-hour fire wall. The wall has several penetrations for noncombustible piping. What is the maximum aggregate area of unprotected openings permitted in any 100 square feet (9.3 m²) of the wall surface?Wall Construction and Wall Coverings
  28. 178.An inspector is reviewing the plans for a retail building where a 1-hour fire-resistance-rated corridor wall is penetrated by a non-combustible duct. What is the minimum fire-resistance rating required for the fire damper installed in this penetration?Wall Construction and Wall Coverings
  29. 179.A commercial building inspector is reviewing the specifications for a new 1-hour fire-resistance-rated interior wall constructed with cold-formed steel studs. The wall is 12 feet (3658 mm) high. What is the minimum flange width required for 3-5/8 inch (92 mm) 20-gauge cold-formed steel studs used in this wall assembly?Wall Construction and Wall Coverings
  30. 180.A commercial building inspector is examining a fire-resistance-rated shaft enclosure in a multi-story building. The shaft is rated for 2 hours. What is the minimum fire-resistance rating required for a fire door assembly installed in this shaft enclosure?Wall Construction and Wall Coverings
  31. 181.A commercial building inspector is evaluating the fire-stopping at a penetration through a 2-hour fire-resistance-rated concrete floor assembly. The penetration is for a noncombustible pipe with an annular space of 1 inch. What is the minimum fire-resistance rating required for the fire-stopping system?Wall Construction and Wall Coverings
  32. 182.A commercial building inspector is reviewing the plans for a new loading dock entry. The opening is located in an exterior wall that is required to have a 2-hour fire-resistance rating. The building is classified as Type III-A construction. What is the maximum aggregate area of unprotected openings permitted in the exterior wall on any story?Wall Construction and Wall Coverings
  33. 183.A commercial building inspector is reviewing the exterior wall assembly for a new retail store. The design includes a continuous insulation (CI) system over gypsum sheathing, with a brick veneer as the exterior finish. What is the minimum air space required between the brick veneer and the continuous insulation?Wall Construction and Wall Coverings
  34. 184.A commercial building inspector is reviewing the plans for a new building with interior nonbearing walls constructed with 8-inch nominal concrete masonry units (CMU). The design calls for a 2-hour fire-resistance rating. What is the minimum equivalent thickness of solid masonry required for this wall to achieve the rating?Wall Construction and Wall Coverings
  35. 185.A commercial building inspector is reviewing the design for a 4-story Type II-A commercial building. The exterior walls are designed as non-bearing fire-resistance-rated walls. What is the minimum fire-resistance rating required for these exterior walls if the fire separation distance is 15 feet (4572 mm)?Wall Construction and Wall Coverings
  36. 186.An inspector is evaluating a 1-hour fire-resistance-rated corridor wall in a commercial building. The wall contains a duct penetration. What is the minimum fire-resistance rating required for the fire damper protecting this penetration if the duct is not part of a hazardous exhaust system?Wall Construction and Wall Coverings
  37. 187.An inspector is reviewing the framing for an interior non-bearing wall in a commercial tenant space. The wall is 10 feet (3048 mm) high and framed with 2x4 wood studs. What is the maximum allowable spacing for these studs if the wall is not fire-resistance-rated?Wall Construction and Wall Coverings
  38. 188.A commercial building inspector is reviewing the exterior wall design for a new building. The design includes a rainscreen wall system with a fiber cement panel cladding. What is the minimum clear air space required behind the fiber cement panels to be considered a rainscreen assembly?Wall Construction and Wall Coverings
  39. 189.An inspector is reviewing the installation of a wood-frame exterior wall for a commercial building. The wall is designed to resist wind loads and contains 2x6 studs spaced at 16 inches (406 mm) on center. What is the minimum nominal thickness of wood structural panel sheathing required for this wall, assuming the sheathing is applied with the long dimension perpendicular to studs and has a span rating of 24/16?Wall Construction and Wall Coverings
  40. 190.A commercial building inspector is reviewing the design for a new 1-hour fire-resistance-rated interior nonbearing wall constructed with cold-formed steel studs. The plans specify 25-gauge (0.018-inch design thickness) steel studs. What is the minimum flange width required for these studs?Wall Construction and Wall Coverings
  41. 191.A commercial building inspector is reviewing the plans for a new loading dock entry. The opening is in a 2-hour fire-resistance-rated exterior wall. The opening is protected by a fire door, and the fire separation distance is 15 feet (4572 mm). What is the maximum aggregate area of all openings permitted in any 100 square feet (9.3 m²) of the exterior wall area?Wall Construction and Wall Coverings
  42. 192.A commercial building inspector is reviewing the exterior wall sheathing for a new Type III-B construction. The design specifies gypsum sheathing. What is the minimum thickness of gypsum sheathing required for this application?Wall Construction and Wall Coverings
  43. 193.A commercial building inspector is reviewing the design for a concrete tilt-up wall panel. The panel is 8 inches (203 mm) thick and 20 feet (6096 mm) tall. What is the minimum amount of lateral support required for this wall panel during construction before it is connected to the roof or floor diaphragm?Wall Construction and Wall Coverings
  44. 194.A client is proposing a new commercial building with a 2-hour fire-resistance-rated masonry wall. The wall will be constructed using 8-inch (203 mm) concrete masonry units (CMU). What is the minimum equivalent thickness of solid masonry required for this wall assembly to achieve the 2-hour rating, assuming standard weight concrete masonry?Wall Construction and Wall Coverings
  45. 195.A commercial building inspector is reviewing the structural plans for a new three-story office building. The plans indicate the use of concrete floor slabs. Which of the following is the minimum specified compressive strength (f'c) required for concrete in members not exposed to freeze-thaw cycles or sulfate attack, according to IBC 2021?Structural Systems
  46. 196.A commercial building inspector is examining the installation of exterior wall insulation in a new retail store. The plans specify continuous insulation (CI) for the wall assembly. Which of the following is the primary purpose of continuous insulation?Building Enclosure
  47. 197.A building inspector is evaluating the fire protection system for a new Group A-2 assembly occupancy (restaurant) with an occupant load of 150. The restaurant has a kitchen with commercial cooking equipment. Which of the following statements regarding the fire suppression system for the kitchen is most accurate?Public Safety and Special Construction
  48. 198.A commercial building inspector is reviewing plans for a new 10-story Group R-2 apartment building. The building is designed as Type I-A construction. What is the minimum fire-resistance rating required for the floor construction, including the supporting beams and girders, below the first story?General Administration, Permits, and Plans
  49. 199.A building official is reviewing plans for a new six-story mixed-use building (Group R-2 residential over Group B business). The building is fully sprinklered. What is the minimum required fire-resistance rating for the horizontal assembly separating the Group R-2 and Group B occupancies?Public Safety and Special Construction
  50. 200.A client proposes to convert an existing 5,000 sq. ft. mercantile space (Group M) into a new assembly space (Group A-3) within an existing building. The proposed occupancy will accommodate 150 occupants. Which of the following statements regarding the permit requirements for this change of occupancy is most accurate?General Administration, Permits, and Plans