Skip to main content

Stairway towers in code

When a building's height is greater than or equal to 75 feet, at least one of the required exits must be: 
A. a fire tower,  B. a smoke proof tower,  C. a smoke proof enclosure,  D. B+C but not A, E. A, B+C

Answer is E.

A, B and C all refer to an enclosed stairway constructed to be noncombustible, designed to provide a refuge for occupants to safely leave the building.

Comments

Post a Comment

Try These Too!

Bolted connections

What is the minimum spacing of bolts specified by AISC? and preferred spacing? A. 1 1/4 times the diameter of the bolt; 2 times preferred B. 1 3/4 times the diameter of the bolt; 2 1/4 times preferred C. 2 1/3 times the diameter of the bolt; 2 2/3 times preferred D. 2 2/3 times the diameter of the bolt; 3 times preferred E. 3 times the diameter of the bolt; 3.25 times preferred
Post a Comment
See the answer »

Roof pitch

Which one of the following slopes in this illustration corresponds with an 8:12 pitch roof? A. 45° B. 36.87° C. 33.69° D. 26.57°
Post a Comment
See the answer »

Zoning terminology

What is the term for the maximum three-dimensional space on a zoning lot within which a structure can be built, as allowed by applicable height, setback and yard controls? Answer Zoning envelope or building envelope.
Post a Comment
See the answer »