Assertion: flight's rise | /r/HasProperty | 9 1⁄2 inches
Facets:
value: for spiral stairs
type: PURPOSE
Source sentences:
text: For spiral stairs, the maximum rise is 9 1⁄2 inches.
text: All treads shall be identical, and the rise shall be no more than 9 1 / 2 inches (241 mm).
text: For spiral stairs, the maximum rise is 9 1⁄2 inches.