rev: 8-2011 section 4 roofing operations. rev: 8-2011 roofing operations when installing shingles...
TRANSCRIPT
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Rev: 8-2011
Section 4Roofing Operations
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Roofing OperationsRoofing Operations
• When installing shingles and other roofing material, use a PFAS.
• Check manufacturer instructions to determine exactly how and where to install anchor points.
• On most homes, multiple anchor points will be required to manage swing-fall hazards.
• It is also important to locate anchor points at a height that prevents striking a lower level should a fall occur.
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1. Anchor Point
2. Life Line
3. Rope Grab
4. Shock Absorbing Lanyard
5. Full Body Harness
Personal Fall Arrest System (PFAS) ComponentsPersonal Fall Arrest System (PFAS) Components
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Swing Fall HazardSwing Fall Hazard
Minimize swing falls:
• Work directly below the anchor.
• Do not extend your work zone more than 30o from the anchor.
• Manage the slack in the rope.
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Swing Fall Hazard, cont.Swing Fall Hazard, cont.
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Swing Fall Hazard, cont.Swing Fall Hazard, cont.
• On most homes, multiple anchor points will be required to manage swing-fall hazards.
• It is also important to locate anchor points at a height that prevents striking a lower level should a fall occur.
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Swing Fall HazardSwing Fall Hazard
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Roofing Operations, Roofing Operations, cont.cont.
• When installing shingles and other roofing material, you can also use guardrails.
• Check manufacturer instructions to determine exactly how and where to install guardrails.
• Guardrails must meet OSHA specifications.
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Guardrail SystemsGuardrail Systems
Source: ACRO Building Systems
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Guardrail Systems, Guardrail Systems, cont.cont.
Source: Guardian Fall Protection
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Guardrail Systems, Guardrail Systems, cont.cont.
Source: Hugs, One, LLC (Hugs Safety)
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Section 5Ladders and Scaffolding
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Learning Objectives: Section 5Learning Objectives: Section 5
• Determine the proper ladder to use based on weight capacity and height.
• Calculate the proper pitch of extension ladders for proper set-up, and identify how to secure and stabilize ladders.
• Identify how to maintain a safe position when using a ladder.
• Identify safety requirements and practices for scaffolding, including aerial lifts.
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Ladder Training RequirementsLadder Training Requirements
• Each employee using ladders should be trained to recognize hazards related to their use. This includes:• Nature of the fall hazards in the work area• Correct procedures for placement, use, and
maintenance • Maximum intended load-carrying capacities
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Ladder or Scaffold?Ladder or Scaffold?
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Pick the Right LadderPick the Right Ladder
Before stepping onto a ladder, think about these things:
• Duty rating of the ladder—what capacity can it hold?
• Height of the ladder—too short or too tall?
• Condition of the ladder and instructions unique to the ladder selected.
We’ll look at each of these in detail.
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Proper Duty Rating/CapacityProper Duty Rating/Capacity
OSHA Requirement
Ladders shall not be loaded beyond the maximum intended load for which they were built nor beyond their manufacturer's rated capacity.
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Proper Duty Rating/Capacity, Proper Duty Rating/Capacity, cont.cont.
Select a ladder with the proper duty rating for your weight and the materials you are handling.
TYPE DUTY RATING USE LOAD
1AA Special Heavy Duty Rugged 375 Lbs.
1A Extra Heavy Duty Industrial 300 Lbs.
1 Heavy Duty Industrial 250 Lbs.
II Medium Duty Commercial 225 Lbs.
III Light Duty Household 200 Lbs.
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Think About ItThink About It
What do these materials weigh:
•A sheet of plywood
•A tool box with tools
•A bundle of shingles
•A 3 x 4 window
Remember: Select a ladder with the proper duty rating for your weight AND the materials you are handling.
?
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Proper Height Extension LaddersProper Height Extension Ladders
When using an extension ladder for access to another level, the ladder must extend at least 3 ft. (.9 m) above the landing to provide a hand hold for getting on and off the ladder.
When using an extension ladder for access to another level, the ladder must extend at least 3 ft. (.9 m) above the landing to provide a hand hold for getting on and off the ladder.
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Ladder Height ExtensionLadder Height Extension
3 feet
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Proper Height Extension LaddersProper Height Extension Ladders, , cont.cont.
40'28' to 31'
36'25' to 28'
32'21' to 25'
28'17' to 21'
24'13' to 17'
20'9' to 13'
16'9' max.
Extension Ladder Height
Height to Gutteror Top Support
40'28' to 31'
36'25' to 28'
32'21' to 25'
28'17' to 21'
24'13' to 17'
20'9' to 13'
16'9' max.
Extension Ladder Height
Height to Gutteror Top Support
Ladder heights are 9-11 ft. longer than the height to be reach to allow for the height/length lost when the ladder is positioned at an angle.
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Proper Height Stepladders Proper Height Stepladders
Maximum Height You Need to Reach
Stepladder Height
7 3 8 4 9 5
10 6 12 8 14 10 15 11 16 12 18 14 20 16
Choose a stepladder that is no more than 4 ft. shorter than the height you want to reach.
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Proper Condition and Proper Condition and InstructionsInstructions
• Inspect the ladder for visible defects. – Never use a ladder that is broken or otherwise
damaged. – Remove damaged ladders from service and
tag them as damaged.
• Review the safety labels on the ladder.– Always comply with the warnings and
instructions.
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Ladder LabelsLadder Labels
• What type of information can be found on ladder labels?– Warnings– Capacity– Set-up
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Determine Proper Ladder Set-upDetermine Proper Ladder Set-up
• Consider placement and pitch of the ladder
• Secure and stabilize the ladder
We’ll look at each of these in detail.
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Placement TipsPlacement Tips
• Avoid setting up a ladder in high traffic areas or barricaded areas.
• Do not use metal or aluminum ladders near electrical lines.
• Place ladders on stable and level surfaces.
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Extension LaddersExtension Ladders
• Extension ladders should be used at a 4 to 1 pitch (1.2 to .3 m).
• For every 4 ft. (1.2 m) in height, the bottom of the ladder should be 1 ft. (.3 m) away from the structure.
• Extension ladders should be used at a 4 to 1 pitch (1.2 to .3 m).
• For every 4 ft. (1.2 m) in height, the bottom of the ladder should be 1 ft. (.3 m) away from the structure.
Example:20 ft. (height) ÷ 4 ft. = 5 ft. pitch
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Correct Pitch?Correct Pitch?
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Any Hazards?Any Hazards?
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StepladdersStepladders
• Stepladders are designed for use in an opened-and-locked position.
• Do not use a stepladder that is folded or in a leaning position
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Higher Ceilings Require Taller Higher Ceilings Require Taller LaddersLadders
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Job built ladder over a stair openingJob built ladder over a stair opening
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Secure and Stabilize LaddersSecure and Stabilize Ladders
• Extension ladders should be secured at the top or bottom to prevent movement.
• The base of an extension ladder must be secured in place by using the safety feet on the ladder or other effective means.
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Secured at the TopSecured at the Top
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Secured at the BottomSecured at the Bottom
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Secure and Stabilize LaddersSecure and Stabilize Ladders,, cont.cont.
Slippery Surfaces
Never use a ladder on a slippery surface, unless it is secured to prevent movement. – Wet or slippery surfaces may require a cleat.– Ladder feet should dig into the ground, and
the ladder should be secured at the bottom to prevent movement/slipping.
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Loose SoilLoose Soil
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Firm BaseFirm Base
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Unstable BaseUnstable Base
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Secure and Stabilize Ladders,Secure and Stabilize Ladders, cont.cont.
Uneven Surface
When the surface is not level, use a ladder leveler (accessory) to provide even contact points.
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Maintain a Safe Position on Maintain a Safe Position on LaddersLadders
• Face the ladder when ascending or descending and maintain three points of contact at all times.
• Keep your body centered on the ladder.
• Never let your belt buckle pass either ladder siderail.
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Maintain a Safe Position on Ladders, Maintain a Safe Position on Ladders, cont.cont.
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Maintain a Safe Position on Ladders, Maintain a Safe Position on Ladders, cont.cont.
• Do not overreach when working from the ladder.
• Do not stand on the top two rungs of a stepladder.
• Do not allow another person on a ladder at any given time, unless you are using a double-cleated ladder that is intended for two-way traffic.
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Scaffolding Scaffolding
A safe alternative to using ladders is to use:
• Interior and Exterior Scaffolding
• Aerial Lifts
...if OSHA requirements and safety practices are followed.
We’ll look at each of these in detail.
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Pump Jack ScaffoldPump Jack Scaffold
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Interior and Exterior ScaffoldingInterior and Exterior Scaffolding
• Job-built scaffolding that is improperly constructed is extremely hazardous.
• Various types and brands of interior and exterior scaffolding are commercially available. – Always, follow the manufacturer’s safety
instructions.
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Masonry Blocks Are Not AcceptableMasonry Blocks Are Not Acceptable
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Interior and Exterior Scaffolding,Interior and Exterior Scaffolding, cont.cont.
• Scaffolding that is 10 ft. or higher must be equipped with guardrails.
• A competent person must supervise the set-up and take down of all scaffolding.
• Walls that support exterior scaffold must be capable of supporting, without failure, the weight of the scaffold and four times the maximum intended load on the scaffolding.
• Scaffolding must be fully planked, and planks must be secured so they cannot move.
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Will This Scaffold hold 4 times the Will This Scaffold hold 4 times the Intended Load? Intended Load?
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GuardrailGuardrail Requirements- Requirements- ScaffoldsScaffolds
• Toprails Between 38” and 45” High
• Guardrails to 200 Lbs/Midrails to min. 75 Lbs – 150 lbs depending on Toprail capacity.
• Cross Bracing OK as Guardrail if Between 20” and 30” for Midrail 38” to 48” for Toprail
• Protect from Falling Objects– All Workers on Scaffolds MUST Wear Hard Hats
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Midrail
Toprail
Cross Bracing OK as ToprailCross Bracing OK as Toprail
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Scaffold AccessScaffold Access
• Ladders Needed if Access More Than 2’
• Don’t Climb Cross Braces
• Place Ladders Securely
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Scaffold Access, Scaffold Access, cont.cont.
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Scaffold Grade Plank StampsScaffold Grade Plank Stamps
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Acceptable Planking?Acceptable Planking?
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Fully Planked?Fully Planked?
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Fully PlankedFully Planked
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PFAS Used with Ladder Jack PFAS Used with Ladder Jack ScaffoldScaffold
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Makeshift ScaffoldsMakeshift Scaffolds
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Aerial LiftsAerial Lifts
• Aerial lifts (e.g., JLG boom lift) or approved personnel lift baskets on rough terrain forklifts is a safe alternative to working from:
• Ladders, or • other types of scaffolding.
• An aerial lift can be used for the installations of:• windows• soffit• fascia• gutters• siding
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Aerial Lifts, Aerial Lifts, contcont..
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Aerial Lifts, Aerial Lifts, contcont..
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Aerial Lifts, Aerial Lifts, cont.cont.
The competent person should:• Restrict operation of aerial lifts or forklift vehicles to
trained and authorized personnel.• Use only commercially built personnel baskets
designed for lifting workers. – Follow the American National Standards Institute’s
(ANSI) standards for using personnel lift baskets.• Make certain that homemade boxes lifted by a forklift
are not used—homemade boxes are unacceptable.
The competent person should:• Restrict operation of aerial lifts or forklift vehicles to
trained and authorized personnel.• Use only commercially built personnel baskets
designed for lifting workers. – Follow the American National Standards Institute’s
(ANSI) standards for using personnel lift baskets.• Make certain that homemade boxes lifted by a forklift
are not used—homemade boxes are unacceptable.
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Aerial Lifts, Aerial Lifts, cont.cont.
When in the lift:
• Wear a full body harness.
• Attach the lanyard to the boom or an approved anchor point inside the basket.
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Aerial Lifts, cont.Aerial Lifts, cont.
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Aerial Lifts, Aerial Lifts, cont.cont.
When in the lift:• Always stand on the floor of the basket. • Do not sit or climb on the edge of the
basket, lean over the edge, or climb out of the basket.
• Do not use a ladder or other objects to increase reach.
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Aerial Lifts, Aerial Lifts, cont.cont.
When operating the lift:• Stay at the controls at all times.• Do not move the vehicle while a person is
in the elevated basket. • Only use the equipment when it is on
stable and level ground.• Maintain the required minimum clearance
of 10 ft. (3 m) from power lines carrying 50 kilovolts or less.
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Saved By The HarnessSaved By The Harness