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Questions and Answers
Determining the occupancy classification(s) of a project should be one of the first steps in researching codes.
True
If there are two occupancies in the same building, the larger occupancy is considered the main occupancy and the smaller occupancy is known as the accessory occupancy.
False
Subcategories of occupancy classifications such as Assembly and Institutional only affect the occupant load of a project.
False
Locations of fire resistance-rated walls can affect how codes apply in buildings with more than one occupancy classification.
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If two different occupancies exist in the same building, they must be separated by a rated wall.
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The number of occupants receiving care, not the total occupant load, determines if an assisted living facility is considered an Institutional occupancy or a Residential occupancy.
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The number of children receiving care determines whether a preschool is considered Institutional or Educational.
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The size of the space determines if an indoor pool is considered an A-3 or A-4.
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When designing a restaurant in a jurisdiction that enforces the International Building Code and the Life Safety Code, which three occupancy classifications should be considered?
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The occupancies that would be considered Institutional by the International Building Code are designed differently by the Life Safety Code. Name two corresponding LSC occupancy classifications.
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The various types of conditions that occur in a building that will help determine the occupancy classification are called:
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When measuring a building to determine the occupant load, ____________ square feet refers to the building area that includes all miscellaneous spaces.
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The codes divide the type of hazardous occupancies into four main categories: fire, explosive, __________ and ___________.
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Match the following building types with their occupancy classifications:
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What three items help to determine the occupancy classification or sub-classification of a project?
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According to the Life Cycle Safety Code, which of the following scenarios would NOT create a new occupancy?
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Which of the following occupancies might be assigned to different sub-classifications depending on the number of occupants?
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Which of the following building types would be the least likely to be a mixed occupancy?
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Which of the following building types may NOT always be considered a Residential occupancy?
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Which of the following statements about accessory occupancies is NOT true?
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When there is more than one type of occupancy in the same building, in which case must they meet the requirements of the most stringent occupancy classification?
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In some cases, you may decide to increase the occupant load of a space so that it is higher than that determined by the load factor. When you do so, you must also do what?
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The occupant load is NOT needed to determine which of the following?
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What do you need to know in order to determine the required occupant load for a space?
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When a building has more than one occupancy, the occupant load for the whole building is determined by which of the following?
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According to the IBC, the five occupancy classifications that have sub-classifications are:
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When calculating occupant loads, which of the following determines if the seats are considered fixed?
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Which of the following is NOT true about live/work units?
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List five typical risk factors:
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Study Notes
Occupancy Classifications and Loads
- Determining the occupancy classification should be a priority during initial code research.
- In buildings with two occupancies, the larger is primary and the smaller is secondary if the latter occupies less than 10% of the total area.
- Subcategories of occupancy classifications, such as Assembly and Institutional, impact various factors, not just occupant load.
- Fire resistance-rated wall locations play a crucial role in code applications for buildings with multiple occupancy classifications.
- Different occupancies in the same building may not require separation by rated walls, allowing for mixed non-separated designs.
- An assisted living facility's classification (Institutional or Residential) is determined by the number of occupants receiving care.
- The number of children in care is not the criterion for classifying a preschool as Institutional or Educational.
- The classification of indoor pools (A-3 or A-4) is not based on size.
- For restaurants, consider three occupancy classifications: Assembly, Business, and Mercantile under applicable codes.
- Healthcare and Daycare are Institutional classifications in the International Building Code corresponding to Life Safety Code categories.
- Risk factors are critical conditions in determining occupancy classifications.
- Gross square footage includes all miscellaneous spaces when assessing occupant load.
- Occupancies are categorized into four main types for hazards: fire, explosive, physical, and health.
- Specific building types are matched with appropriate occupancy classifications, like supermarkets with Mercantile occupancy and nursing homes with Institutional occupancy.
- The occupancy classification is influenced by the activity type, hazard types, and occupant numbers.
- The Life Cycle Safety Code differentiates between new and existing occupancies; certain scenarios may not create new occupancy.
- Occupancies like Residential and Institutional might receive different sub-classifications based on occupancy numbers.
- Restaurants are typically least likely to represent mixed occupancy.
- Nursing homes may not always be categorized strictly as Residential, unlike monasteries, halfway houses, and hotels.
- Accessory occupancies must be less than 10% of the primary occupancy area to comply with regulations.
- Non-separated mixed occupancies must adhere to the most stringent requirements if there are multiple occupancy types in one building.
- When increasing occupant load beyond calculated limits, additional exiting and code official approval are required.
- Occupant load is not needed to establish construction type but is necessary for exit width, maximum capacity, and plumbing fixture requirements.
- Required occupant load calculation involves load factor and square footage assessments.
- Total occupant load for buildings with multiple occupancies is calculated by summing the loads of individual occupancy types.
- Five main occupancy classifications with sub-classifications per the IBC include Assembly, Institutional, Residential, Hazardous, and Storage.
- Fixed seating is determined by attributes such as immobility, continuity, lack of arms, or permanent usage.
- Live/work units are categorized based on the proportion of nonresidential space, not exceeding 10%, and are not strictly regulated in total area.
- Common risk factors include spatial characteristics, fuel loads, concentration of occupants, characteristics of occupants, and their familiarity with the building.
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