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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

According to CAN/ULC-S524, if ceiling beams have a depth greater than ______, each beam pocket shall be protected by at least one detector.

S524 states that for beams depth exceeding 10% of the ceiling height, the spacing shall be reduced. If beams are deeper than 450mm, each pocket formed by beams

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Question: According to CAN/ULC-S524, if ceiling beams have a depth greater than ______, each beam pocket shall be protected by at least one detector.

Answer options:

  • 100 mm
  • 300 mm ✅ 450 mm
  • 600 mm

Correct answer: 450 mm

Explanation: S524 states that for beams depth exceeding 10% of the ceiling height, the spacing shall be reduced. If beams are deeper than 450mm, each pocket formed by beams must be treated as a separate area.

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