Extension ladders

Extension ladders
Extension ladders
Explain dangers
Extension ladders can be dangerous tools.
Workers have been killed and injured from falls
and powerline contact.
Identify controls
• Choose the right ladder for the job. It must be
long enough to
–– be set up at a safe angle (see below)
–– extend 90 centimetres (3 feet) beyond the
top landing.
•A two-section extension ladder should be no
longer than 15 metres (50 feet); a three-section
ladder no longer than 20 metres (66 feet).
• Check the ladder for damage or defects
––before you set it up
––after it has been used somewhere else by
• When climbing up or down, always face the
ladder and maintain 3-point contact.
• Don’t carry tools, equipment, or material in
your hands while climbing. Use a hoist line or
gin wheel for lifting and lowering.
• Be very careful when erecting extension
ladders near live overhead powerlines. Never
use metal or metal-reinforced ladders near
electrical wires or equipment.
• Wherever possible, use extension ladders only
for access—not as work platforms.
• When you must work from a ladder more than
3 metres or 10 feet up, wear a safety harness
and tie off to a well-anchored lifeline or other
support—not to the ladder.
Demonstrate as you talk.
other workers
–– after it has been left somewhere for a long time.
• Set the ladder on a firm, level base. If the base
is made of soft, loose, or wet material, clear it
away or stand the ladder on a mud sill.
• Never erect extension ladders on boxes, carts,
tables, or other unstable objects. Never stand
them up against flexible or movable surfaces.
• Set the ladder up at a safe angle—one foot out
for every three or four feet up, depending on
• When the ladder is set up, there should be a
clear space of at least 15 centimetres or
6 inches behind each rung.
• When the ladder is fully extended, sections
must overlap at least 90 centimetres (3 feet).
• Stand no higher than the fourth rung from the top.
• Tie off or otherwise secure the top and bottom
of the ladder. Keep areas at the top and bottom
clear of debris, scrap, material, and other
• Clean mud, snow, and other slippery substances
off your boots before climbing.
Working at Heights
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