When considering the height you need to get the job done, keep in mind
the difference between the actual height of a ladder and the usable
Step Ladders: You should never stand on the top two
rungs, for safety reasons. Look for a step ladder that is 4 feet less
than the maximum height you need to reach.
Extension and Straight Ladders: These require you to
stay off the top three rungs. Look for an extension ladder that is one
foot less than the maximum height you need to reach.
iDuty Rating is
defined as the maximum safe load
capacity of the ladder. A
person's fully clothed weight
plus the weight of any tools and
materials that are carried onto
the ladder must be less than the