PPT-SM-SCAFLD 2014 1
Copyright © 2014 by PEC Safety Management, Inc.
Scaffolding Safety
PPT-SM-SCAFLD 2014
Scaffolds • Scaffolds are temporary work platforms erected
so workers can safely do elevated work • Scaffolds allow workers to perform jobs that
– Require elevation – Take a long time – Require both hands – Require more than one worker
PPT-SM-SCAFLD 2014
Scaffolding Hazards • In 2009
– 54 workers died from scaffold accidents – 72% of workers injured in scaffold accidents because of
o Planking or support giving way o Slipping o Being struck by a falling object
• In 2012, 3,650 workers were injured from scaffolds
PPT-SM-SCAFLD 2014
Scaffold Hazards Four major scaffolding hazards 1. Electrical hazards
– Working near energized or exposed electrical lines – Using electrical power tools and welding equipment
2. Fall hazards 3. Falling objects 4. Scaffold instability or collapse
PPT-SM-SCAFLD 2014
General Requirements for Scaffolds • Footing and anchorage of scaffolds must be
– Sound – Rigid – Capable of carrying the maximum intended load
without settling or displacement • Do not use unstable objects to support scaffolds
– Barrels – Boxes – Loose bricks – Concrete blocks
PPT-SM-SCAFLD 2014
General Requirements for Scaffolds • Scaffolds and their components should be
capable of supporting, without failure, at least four times the maximum intended load
• Maintain scaffolds in a safe condition • Do not alter or move scaffolds horizontally while
they are occupied • Nuts and bolts used for construction of scaffolds
must be adequate size and used in sufficient numbers to develop the designed strength
PPT-SM-SCAFLD 2014
General Requirements for Scaffolds • Planking and platforms must be overlapped at least
12 inches or secured from movement • Safe access must be provided • Scaffold planks must extend over end supports
between 6-18 inches • Poles, legs, and uprights must be plumb and securely
and rigidly braced to prevent swaying and displacement
• Materials being hoisted onto a scaffold must have a tagline
PPT-SM-SCAFLD 2014
General Requirements for Scaffolds
• Overhead protection must be provided on a scaffold exposed to overhead hazards
• Scaffolds must be provided with a screen between the toeboard and the guardrail, extending along the entire opening
• Tools, materials, and debris are not allowed to gather in quantities to cause a hazard
PPT-SM-SCAFLD 2014
General Requirements for Scaffolds • Only use treated or protected rope when
working with corrosive substances or chemicals • Wire and fiber rope used for suspension must be
capable of supporting at least 6 times the intended load
• When using acid solutions for cleaning structures over 50 feet in height, wire rope supported scaffolds must be used
PPT-SM-SCAFLD 2014
General Requirements for Scaffolds
• Scaffolds must be secured to permanent structures through use of anchor bolts, reveal bolts, or other equivalent means
• Protect scaffold parts when using heat-producing processes
• Scaffolds cannot be taller than 4 times the smallest dimension of the base
PPT-SM-SCAFLD 2014
Scaffolding Inspection • A qualified worker must inspect scaffolds for
– Damage – Deterioration – Missing parts
• Scaffolds must be inspected – Before you are allowed to use them – Before each shift – After any occurrence that may affect the stability or
safe use of the scaffolding
PPT-SM-SCAFLD 2014
Scaffolding Inspection The inspector should check that • Risers and braces are securely fastened with the
locking mechanism properly engaged • Diagonal cross braces are provided according to
design specifications • Handrails and toeboards are installed on all open
ends and sides of scaffolding greater than 10 feet high
• Caged ladders or stairways are provided for entry
PPT-SM-SCAFLD 2014
Very Tall Scaffolds Scaffolds higher than 4 times the smallest dimension of the base • Use tying to secure scaffolds to tall structures to
prevent swaying or displacement • Scaffolds must be tied at least
– Every 30 feet horizontally – Every 26 feet vertically
• Use guying whenever tall scaffolds cannot be secured to an adjacent structure – Guying must be designed by a competent engineer
PPT-SM-SCAFLD 2014
Wheeled Scaffolds • Wheeled scaffolds can only be used on
smooth, firm, and level surfaces • You are only allowed on the scaffold
when it is stationary • Never ride a wheeled scaffold
PPT-SM-SCAFLD 2014
Safe Work Practices • Employees must not work on scaffolds during storms
or high winds • Employees must not work on scaffolds covered with
ice or snow – All ice or snow must be removed and planking sanded to
prevent slipping • Do not mix components from different scaffolding
systems – A hybrid scaffold may not be able to bear the desired
weight
PPT-SM-SCAFLD 2014
Safe Work Practices • Shore scaffolds and lean-to scaffolds are
prohibited • Window cleaners' anchor bolts must not be used
to secure scaffold to permanent structures • If electrical equipment is being used on
scaffolding – Ground to reduce risk of injury – Keep scaffold and conductive materials at least 10
feet away from overhead power lines
PPT-SM-SCAFLD 2014
Safe Work Practices • Do not stand on boxes, crates, or barrels,
or use ladders to increase working height • Wear overhead protection when you
may be exposed to overhead hazards • Use scaffolds only for their intended use
PPT-SM-SCAFLD 2014
Safe Work Practices • Use taglines to hoist material onto a
scaffold • Wear appropriate PPE • Keep scaffold work areas and walkways
neat • Wear personal fall arrest equipment
when needed
PPT-SM-SCAFLD 2014
Safe Work Practices • Always use a ladder or stairs to access the upper
work surface of a scaffold • Never climb on the
– Handrail – Mid-rail – Cross-braces – Braces of the scaffold system
• When using stairs – Keep hands free – Use the handrails
PPT-SM-SCAFLD 2014 20
Sign and date this quiz sheet. Circle the letter representing the correct answer to each quiz question below.
Name:©
2014 PEC Safety, Inc.
QUIZ-SM-SCAFFLOLDING SAFETYREV. JAN.24 2014
Date:
1. Scaffolds allow workers to perform jobs that ___________.A. require elevationB. take a long time C. require both handsD. all of the above
2. The four major scaffolding hazards include electrical hazards, fall hazards, falling objects, and ____________.
A. weatherB. horseplay C. scaffold instability or collapseD. none of the above
3. Barrels, boxes, loose bricks, and concrete blocks are acceptable objects to support scaffolds.A. trueB. false
4. Scaffolds and their components should be capable of supporting, without failure, at least ______ times the maximum intended load.
A. 2B. 4C. 6D. 8
5. Scaffolds cannot be taller than 4 times the smallest dimension of the base.A. true B. false
6. A. damageB. deteriorationC. missing partsD. all of the above
7. Handrails and toeboards must be installed on all open ends and sides of scaffolding greater than 10 feet high.
A. true B. false
8. It is okay for you to work on scaffolds during storms and high winds as long as the scaffolding is tied off.
A. trueB. false
9. Which of the following is not a safe work practice when working with scaffolds?A. Using taglines to hoist material onto a scaffoldB. Wearing appropriate PPEC. Standing on boxes, crates, or barrels to increase your working heightD. Wearing personal fall arrest equipment when needed
10. Always use a ladder or stairs to access the upper work surface of a scaffold.A. trueB. false
©
201
4 PE
C S
afet
y, In
c.
KEY-SM-SCAFFLOLDING SAFETYREV. JAN.24 2014
1. D
2. C
3. B
4. B
5. A
6. D
7. A
8. B
9. C
10. A
This is to certify that
has successfully completed thePEC Safety Meeting
Date AwardedInstructor
Scaffolding Safety
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