Carpenter Red Seal Exam Prep · Question
A three-storey residential building (Group C occupancy) is being constructed. According to the NBC 2020, what is the minimum required fire-resistance rating for the floor assembly separating the first and second storeys if the building has a sprinkler system installed throughout?
For a three-storey residential building with a sprinkler system, Table 3.2.2.4. of the NBC 2020 specifies a minimum 1-hour fire-resistance rating for floor asse
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Question: A three-storey residential building (Group C occupancy) is being constructed. According to the NBC 2020, what is the minimum required fire-resistance rating for the floor assembly separating the first and second storeys if the building has a sprinkler system installed throughout?
Answer options:
- 45 minutes ✅ 1 hour
- 1.5 hours
- 2 hours
Correct answer: 1 hour
Explanation: For a three-storey residential building with a sprinkler system, Table 3.2.2.4. of the NBC 2020 specifies a minimum 1-hour fire-resistance rating for floor assemblies separating dwelling units or major occupancies.
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