Assertion: tower's height | /r/HasProperty | equal
Facets:
value: to 15 ft.
type: OTHER
value: for exposures
type: CAUSE
Source sentences:
text: Wind speed-up effects at isolated hills, ridges and escarpments constituting abrupt changes in the general topography located in any exposure category, shall be included in the calculation of design wind loads when: The hill, ridge or escarpment is isolated and unobstructed by other similar topographic features of comparable height for a radius of two miles measured horizontally from the point at which the height of the hill, ridge of escarpment is determined, and The hill, ridge or escarpment protrudes by a factor of tow or more above the surrounding terrain with a two mile radius, and The slope (vertical to horizontal ratio) of the topographic feature exceeds 0.10, and The height of the topographic feature is greater than or equal to 15 ft. for exposures C and D and 60 ft.