Correct.
The vapor retarder class definition in Section 202 relies on ASTM E96 Procedure A, the desiccant method. Procedure B is the other E96 procedure (the water method), but the definition names the desiccant method. ASTM E2178 measures the air permeance of air barrier materials, not vapor permeance. ASTM C887 is the standard for surface-bonding mortar used in foundation dampproofing.
1 of 1 right so far.
Question 2 of 10.
Under IBC 2021 Section 1507.4.2, what is the minimum slope for a standing-seam metal roof system?
A: 3 units vertical in 12 units horizontal (25-percent slope)
B: 2 units vertical in 12 units horizontal (17-percent slope)
C: ΒΌ unit vertical in 12 units horizontal (2-percent slope)
D: one half unit vertical in 12 units horizontal (4-percent slope)
NEXT: A · B · C · D
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