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

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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