When selecting a ladder to access a specific point, which of the following is MOST accurate regarding estimated distances and ladder reach?
A) A commercial story averages 12 feet (4 m).
B) A residential story averages about 12 feet (4 m).
C) Extension ladders' maximum extended length may be as much as 6 inches (150 mm) more than the designated length.
D) For ladders over 35 feet (11 m) in length, the reach is approximately 1 foot (300 mm) less than the designated length.

Question

Quizplus · Accepted Answer

C  D  A commercial story typically averages around 12 feet. Extension ladders can extend slightly beyond their designated length, and for ladders over 35 feet, the reach is generally less than the designated length by about 1 foot.

When Selecting a Ladder to Access a Specific Point, Which