A concrete roof tile is proposed on a sloped canopy. What minimum slope is generally listed by the IBC for clay and concrete roof tile?
Correct Answer
A) 2-1/2 units vertical in 12 units horizontal
IBC clay and concrete tile provisions generally use a 2-1/2:12 minimum slope. Other choices confuse tile with low-slope membranes, asphalt shingles, or a steeper project-specific roof.
Why This Is the Correct Answer
IBC clay and concrete tile provisions generally use a 2-1/2:12 minimum slope. Other choices confuse tile with low-slope membranes, asphalt shingles, or a steeper project-specific roof.
Why the Other Options Are Wrong
Option B: 1/4 unit vertical in 12 units horizontal
Choice B gives 1/4 unit vertical in 12 units horizontal. Its specific error: 1/4 unit vertical in 12 units horizontal is an IBC dimensional value for a different stair, door, or egress condition.
Option C: 2 units vertical in 12 units horizontal
Choice C (2 units vertical in 12 units horizontal) is rejected because 2 units vertical in 12 units horizontal is an IBC dimensional value for a different stair, door, or egress condition.
Option D: 5 units vertical in 12 units horizontal
In thermal and moisture protection, 5 units vertical in 12 units horizontal is the wrong selection for Clay and concrete tile slope: 5 units vertical in 12 units horizontal is an IBC dimensional value for a different stair, door, or egress condition.
Memory Technique
Use a label memory cue for clay and concrete tile slope: the stem's condition unlocks 2-1/2 units vertical in 12 units horizontal.
Reference Hint
Open International Building Code 2021 or 2024; use IBC 2021/2024 Section 1507 clay and concrete tile - slope to confirm that IBC clay and concrete tile provisions generally use a 2-1/2:12 minimum slope.
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