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Commercial Building Inspector B2 practice questions

217 free questions with answers and explanations.

Practice test
  1. 1.A building inspector is reviewing the plans for a new three-story office building (Group B). The building has a total floor area of 30,000 square feet per floor. The plans indicate the use of a fire alarm control unit (FACU). Which of the following statements regarding the FACU is TRUE according to IBC?Public Safety and Special Construction
  2. 2.A new three-story medical office building (Group B) is being designed. The building has an occupant load of 150 persons per floor. According to IBC 1007.7.1, what is the minimum number of accessible means of egress required from each story above or below the level of exit discharge?Public Safety and Special Construction
  3. 3.A building inspector is reviewing the plans for a new six-story apartment building (Group R-2). The plans include a trash chute system. According to IBC, what is the minimum fire-resistance rating for the walls enclosing the trash chute and the refuse room?Public Safety and Special Construction
  4. 4.A new Group R-2 apartment building is being constructed with a fire alarm system. According to NFPA 72 requirements adopted by the IBC, which of the following statements regarding the audibility of fire alarm notification appliances in sleeping areas is correct?Public Safety and Special Construction
  5. 5.A building inspector is reviewing the fire protection system for a new seven-story mixed-use building. The building has Group R-2 occupancies on floors 3-7 and Group B occupancies on floors 1-2. The building is equipped with an automatic sprinkler system throughout. What is the minimum required fire-resistance rating for the horizontal exit components, such as fire barriers or fire walls, separating the Group R-2 residential portions from the Group B business portions on the same floor?Public Safety and Special Construction
  6. 6.A building official is inspecting the fire resistance-rated construction of a new six-story apartment building (Group R-2). According to IBC 703.3, what is the maximum allowable dimension for an opening in a fire-resistance-rated wall that is NOT permitted to be protected with an opening protective (e.g., fire door or fire window)?Public Safety and Special Construction
  7. 7.A building inspector is reviewing the energy efficiency compliance of a newly constructed 12-story high-rise office building (Group B). The building uses a continuous air barrier system. According to the International Energy Conservation Code (IECC) referenced by IBC, which of the following is a required test to verify the performance of the continuous air barrier?Public Safety and Special Construction
  8. 8.A contractor is performing demolition work on an existing two-story commercial building. The demolition involves removing structural elements. According to IBC 3303.1, which of the following is REQUIRED before any structural demolition begins?Public Safety and Special Construction
  9. 9.A building inspector is performing a final inspection of a new four-story mixed-use building with Group R-2 apartments above Group A-2 retail on the ground floor. The building incorporates a fire command center. Which of the following is NOT a required feature or equipment for a fire command center in this building, according to IBC?Public Safety and Special Construction
  10. 10.A designer is specifying an automatic sprinkler system for a new Group R-2 occupancy building. The building is four stories above grade plane and has a total area of 25,000 square feet per floor. Which standard should be referenced for the design and installation of this sprinkler system?Public Safety and Special Construction
  11. 11.A developer is constructing a new high-rise building with a floor area of 30,000 square feet per story. The building is designed with a smoke control system. Which of the following is an acceptable method for providing the required standby power for the smoke control system, according to IBC 909.11?Public Safety and Special Construction
  12. 12.A building inspector is evaluating the fire protection system for a new Group A-2 assembly building with an occupant load of 400. The building is equipped with an automatic sprinkler system throughout. What is the minimum required fire-resistance rating for the fire barrier separating the main assembly space from an adjacent storage room (less than 100 sq ft) that contains ordinary combustibles?Public Safety and Special Construction
  13. 13.A building inspector is reviewing the plans for a new public library (Group A-3) with a main reading room. The plans indicate a row of fixed seating with 15 chairs. According to IBC, what is the minimum required clear width for an aisle serving only one side of this fixed seating arrangement?Public Safety and Special Construction
  14. 14.A contractor is performing demolition work on a portion of an existing six-story commercial building. The demolition involves removing non-load-bearing interior partitions on the third floor. Which of the following is NOT typically required to be submitted to the building official for this type of demolition work?Public Safety and Special Construction
  15. 15.During the construction of a new multi-story commercial building, a temporary enclosure is erected around the perimeter of the building at the ground level to protect the public from falling debris. According to IBC 3306.2, what is the minimum required height for this temporary protective enclosure when located less than 10 feet (3048 mm) from the building?Public Safety and Special Construction
  16. 16.A building inspector is reviewing the plans for a new three-story Group B office building. The building has a total occupant load of 150 people per floor. According to the IBC, what is the minimum required width for a corridor serving an occupant load of 150?Public Safety and Special Construction
  17. 17.A building inspector is reviewing the emergency lighting system design for a new mercantile building (Group M). The building has an occupant load of 350 and is equipped with an automatic sprinkler system. How long must the emergency lighting system remain operational after a power failure, according to IBC?Public Safety and Special Construction
  18. 18.A building inspector is reviewing the plans for a new three-story Group R-2 apartment building. The plans indicate the use of fireblocking in concealed spaces of combustible construction. According to IBC, what is the maximum dimension permitted for a concealed space of combustible construction without the installation of fireblocking?Public Safety and Special Construction
  19. 19.A contractor is installing a fire alarm system in a new mercantile building. Which of the following components is NOT considered a part of the fire alarm system, as defined by the IBC and NFPA 72?Public Safety and Special Construction
  20. 20.A building inspector is reviewing the plans for a new four-story Group B office building. The plans indicate that the building has one primary exit stair and an additional exterior exit stair. What is the minimum number of accessible means of egress required for this building?Public Safety and Special Construction
  21. 21.A building inspector is evaluating the energy performance of a new three-story office building (Group B) with a total conditioned floor area of 30,000 square feet. The building utilizes a combination of continuous insulation and cavity insulation in its exterior walls. Which of the following IECC compliance pathways is most likely being used if the design includes detailed calculations of overall building energy consumption?Public Safety and Special Construction
  22. 22.A building inspector is reviewing the construction documents for a renovation project in an existing five-story Group B office building. The renovation involves changing the occupancy classification of a portion of the third floor from office to a Group A-3 assembly space with an occupant load of 75. The existing building does not have an accessible means of egress from the third floor. According to IBC Chapter 11 (Accessibility) and Chapter 34 (Existing Buildings), what is the minimum number of accessible means of egress required from the third floor?Public Safety and Special Construction
  23. 23.A building official is reviewing plans for a new school building (Group E). The building is protected throughout with an automatic sprinkler system. According to IBC 1004.1.2, what is the maximum occupant load factor to be applied for an assembly area with fixed seats without tables (e.g., an auditorium or lecture hall) when calculating the occupant load?Public Safety and Special Construction
  24. 24.A tenant improvement project in an existing building involves converting a portion of a Group B office into a Group A-2 restaurant. The existing building was constructed under the 2006 IBC. When evaluating the existing means of egress for the new restaurant, which chapter of the 2021 IBC primarily governs the requirements for existing buildings?Public Safety and Special Construction
  25. 25.An inspector is reviewing the plans for a new four-story office building (Group B). The building is required to have two exits. What is the minimum clear width required for each exit door in the means of egress, assuming an occupant load of 200 per floor?Public Safety and Special Construction
  26. 26.A contractor is constructing a new 5-story hotel (Group R-1) in an area prone to seismic activity. The building is designed as a Type II-A construction. According to IBC, what is the minimum required wind design speed (3-second gust) for a building in a region with a basic wind speed of 115 mph (185 km/h) and Exposure Category C?Public Safety and Special Construction
  27. 27.A building official is inspecting the installation of a standpipe system in a new 10-story office building (Group B). The building has a total height of 120 feet (36.6 m) above grade plane. What class of standpipe system is required for this building, according to IBC?Public Safety and Special Construction
  28. 28.A newly constructed three-story office building requires an accessible route from the public way to all accessible building entrances. Which of the following conditions would necessitate the inclusion of a ramp as part of this accessible route?Public Safety and Special Construction
  29. 29.A building inspector is reviewing the energy performance of a new 10-story mixed-use commercial building (Group M and B occupancies). Which of the following codes or standards is primarily referenced by the IBC for the energy efficiency requirements of such a building?Public Safety and Special Construction
  30. 30.A building inspector is evaluating the fire separation between two attached commercial buildings. Building A is a two-story Group B office building, and Building B is a one-story Group S-1 storage warehouse. The buildings are separated by a fire wall. What is the minimum required fire-resistance rating for this fire wall, assuming both buildings are of Type II-B construction?Public Safety and Special Construction
  31. 31.A building inspector is reviewing the plans for a new four-story multi-tenant commercial building (Group B). The building is equipped with an automatic sprinkler system throughout. What is the minimum required fire-resistance rating for the exit access corridors in this building?Public Safety and Special Construction
  32. 32.A building inspector is reviewing the design for a new three-story Group M (Mercantile) building with a total floor area of 45,000 square feet. The building is fully sprinklered. The plans indicate the presence of a fire command center. Which of the following is NOT a required component or feature of a fire command center according to the IBC?Public Safety and Special Construction
  33. 33.A structural engineer is designing a two-way slab system for a commercial retail store. The slab is supported by columns arranged in a 20 ft by 20 ft (6.1 m x 6.1 m) grid. The design calls for a minimum slab thickness. According to ACI 318, as referenced by the IBC, for a two-way slab without beams, what is the minimum thickness if the panels have a clear span of 18 ft (5.5 m) and are subject to live loads of 100 psf (4.79 kN/m²)? Assume normal weight concrete (w_c = 145 pcf) and f_y = 60,000 psi (414 MPa).Floor Construction
  34. 34.A commercial building inspector is examining a raised access floor system in a data center. The access floor panels are supported by adjustable pedestals. According to the IBC, what is the minimum required live load for general office areas with raised access floors?Floor Construction
  35. 35.A commercial building inspector is reviewing the structural plans for a new office building. The plans show a precast concrete floor system with openings for mechanical ducts. According to ACI 318, as referenced by the IBC, what is the maximum permissible size for an opening in a two-way slab without beams if it is located in the middle-strip region and does not contain reinforcement specifically designed for the opening?Floor Construction
  36. 36.An inspector is reviewing the design for a steel-framed floor system in a multi-story commercial building. The plans indicate that the steel beams are to be protected with spray-applied fire-resistive materials (SFRM). According to the IBC, what is the minimum thickness of SFRM required to achieve a 2-hour fire-resistance rating for a W12x50 steel beam?Floor Construction
  37. 37.A commercial building inspector is observing the construction of a masonry bearing wall supporting a precast concrete plank floor. The plans indicate that the wall is constructed of 8-inch (203 mm) nominal concrete masonry units (CMU). What is the minimum nominal thickness of a concrete masonry bearing wall required to support a floor, according to the IBC?Floor Construction
  38. 38.An inspector is evaluating the installation of a new wood floor system in a commercial building. The plans specify the use of fire-retardant-treated wood (FRTW) for the floor joists. Which of the following conditions is NOT permitted for the use of FRTW in floor construction according to the IBC?Floor Construction
  39. 39.A commercial building inspector is reviewing the plans for a new four-story mixed-use building. The structural drawings indicate that the floor system consists of steel beams and girders supporting a composite metal deck with a concrete slab. What is the minimum fire-resistance rating required for the floor construction separating a Group M occupancy from a Group R-2 occupancy in this building, constructed as Type IIIA?Floor Construction
  40. 40.A commercial building inspector is reviewing the structural plans for a new single-story commercial retail building with a large open sales floor. The floor system is specified to be a reinforced concrete slab-on-grade. What is the minimum uniformly distributed live load required for the sales floor area of a retail store, according to the IBC?Floor Construction
  41. 41.A commercial building inspector is observing the installation of a new wood floor system in a Type III-B construction. The plans specify wood I-joists. According to the IBC, when a floor assembly is required to be fire-resistance rated, what is the minimum nominal thickness of gypsum wallboard required on the underside of wood I-joists to achieve a 1-hour rating?Floor Construction
  42. 42.A commercial building inspector is reviewing the installation of a new resilient floor covering in a medical clinic's waiting area. The subfloor is a concrete slab. Which of the following is a critical factor to check regarding the concrete subfloor preparation before resilient flooring installation, as per industry standards?Floor Construction
  43. 43.A commercial building inspector is reviewing the plans for a new restaurant with a kitchen area. The floor finish in the kitchen is specified as quarry tile. According to the IBC, which of the following characteristics is required for floor finishes in commercial kitchen areas?Floor Construction
  44. 44.A commercial building inspector is reviewing plans for a masonry floor system utilizing precast hollow-core concrete planks. The plans indicate that the planks will be covered with a structural topping. What is the minimum thickness required for this structural concrete topping over the planks, according to the IBC?Floor Construction
  45. 45.A commercial building inspector is reviewing plans for a new six-story office building. The plans indicate that the flooring system for the upper floors consists of 8-inch deep precast concrete planks. According to the IBC, what is the minimum required fire-resistance rating for these floor assemblies when supporting more than one floor or a roof in a Type IB construction?Floor Construction
  46. 46.A commercial building inspector is reviewing plans for a new three-story office building of Type IIA construction. The plans show a floor assembly with a 1-hour fire-resistance rating. What is the minimum fire-resistance rating required for the floor construction (including beams, girders, and trusses) in this building type, according to the IBC?Floor Construction
  47. 47.A commercial building inspector is reviewing the structural plans for a new three-story office building. The plans show a floor system utilizing 2x10 wood joists spaced at 16 inches on center. The designer has specified a required fire-resistance rating of 1 hour for the floor assembly. Which of the following methods is typically used to achieve this fire-resistance rating for a wood-framed floor assembly?Floor Construction
  48. 48.A commercial building inspector is observing the installation of a new concrete floor slab on grade for a warehouse. The plans specify a 6-inch thick concrete slab. What is the minimum compressive strength required for concrete used in a slab-on-grade for a warehouse, assuming no special conditions are noted beyond typical industrial use?Floor Construction
  49. 49.A commercial building inspector is reviewing the design for a new multi-story parking garage. The plans indicate that the concrete floor slabs are designed as two-way slabs. According to ACI 318, what is the minimum concrete cover required for primary reinforcement bars in a two-way slab not exposed to weather or in contact with the ground?Floor Construction
  50. 50.A commercial building inspector is reviewing the firestopping details for penetrations through a 2-hour fire-resistance-rated concrete floor slab. A 4-inch (102 mm) PVC pipe penetrates the slab. According to the IBC, what is the minimum required fire-resistance rating for the firestop system around this penetration?Floor Construction