roofing fall protection
TRANSCRIPT
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Fall Protection
New England Roofing Industry Partnership
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Training Objectives After completing this session you will:
– Have a better understanding of the potential fall hazards you face as a roofer.
– Be able to recognize a fall situation.– Understand the means and methods
available to eliminate or protect you from the fall hazard.
– Understand the contents of OSHA Subpart M.
MSUBPART
1Fall Protection
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References 29 CFR 1926.500 Subpart M - Fall
Protection OSHA Instruction STD 3.1 “Interim Fall
Protection Guidelines for Residential Construction”– OSHA Instruction STD 3-0.1A 06/18/99 Plain
Language Revision
MSUBPART
2Fall Protection
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Fall Facts
$2 billion cost to employers each year.
The leading cause of fatalities and a leading cause of injuries in construction.
– 100,000 injured– 150 - 200 deaths– 35% of Construction Fatalities (2001)– 84% of injured lose time from work– 33% of injured are hospitalized
MSUBPART
3Fall Protection
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Roofing Fall FatalitiesOSHA All Regions (Jan ’96 – Jan ’02)
381 incidents involving Fatalities – 386 deaths
286 deaths with Fall as a Direct Cause 268 deaths by Head or Organ Trauma injury Average Age: 34
MSUBPART
4Fall Protection
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Source: USDOL-OSHA Fatality Data Report
Roofing Fall FatalitiesOSHA Region I (Jan ’96 - Jan ‘02)
26 incidents involving fatalities– 27 Deaths
20 deaths with Fall as Direct Cause 17 by Head or Organ Trauma Injury Average Age: 38
MSUBPART
5Fall Protection
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US DOL-OSHA Fatality Data Report
Roofing Fall FatalitiesOSHA Region I (Jan ’96 - Jan ’02)
Human Factors – what was done/not done? – 7 ‘Misjudgment of hazardous situations’– 5 ‘Other’– 3 ‘Safety devices removed or inoperative’– 3 ‘Insufficient or lack of engineering controls’– 3 ‘Insufficient or lack of protective equipment’– 2 ‘Malfunction in securing or warning operation’
MSUBPART
6Fall Protection
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US DOL-OSHA Fatality Data Report
Roofing Fall FatalitiesOSHA Region I (Jan ’96 - Jan ’02)
Environmental Factors - what was involved?– 11 ‘Work surface or layout condition’– 11 ‘Other’– 3 ‘Material handling equipment or method’
MSUBPART
7Fall Protection
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What Causes Falls? 91% - no fall protection worn 82% - no fall protection in place 79% - wore harness or belt but not attached 75% - loss of footing, balance, or gripFalls are the leading cause of on-the-job deaths in construction. Sixty percent (60%)of all falls were preventable by fall protection.
MSUBPART
8Fall Protection
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(Subpart M, 29 CFR 1926.500 – 503) Most work 6 feet above levels to which you could fall:
– Ramps, runways, walkways, excavations, hoist areas, holes, formwork, reinforcing steel, leading edges, unprotected sides or edges, overhand bricklaying, roofing, pre-cast concrete erection, wall openings, residential construction, and other walking/working surfaces.
Fall Protection RequiredM
SUBPART
9Fall Protection
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Does not cover workers assessing workplace conditions prior to start of project or after work is completed. Does not cover scaffolds, steel erection, or crane-supported platforms.
MSUBPART
10Fall Protection
Fall Protection Required 2
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200 lb. Worker falling 6 feet = 9,000+ lbs. of energy.
The Six Foot Fall
MSUBPART
11Fall Protection
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Fall Protection Two basic approaches:
– Fall Prevention - keeps workers, tools, or materials from falling off, onto, or through working levels.
– Fall Arrest - catches workers, tools, or materials after they have fallen, before they strike a lower level.
MSUBPART
12Fall Protection
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Guardrail Systems
Controlled Access Zones
Warning Line Systems
Safety Monitoring Systems
PersonalFall
Arrest Systems
Hole Covers
Canopies
Subpart M Options for ProtectionM
SUBPART
13Fall Protection
Safety Net Systems
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MSUBPART
M 14
Conventional Methods ofFall Protection
Fall Prevention - – Guardrails– Hole covers
Fall Arrest - – Personal Fall Arrest Systems– Safety Nets
14Fall Protection
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Guardrail Systems A barrier between you and the fall. This is a method of fall prevention. Guardrails are passive fall protection
– You are protected without doing anything.
MSUBPART
15Fall Protection
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Subpart M presents basic requirements.
Guardrail RequirementsM
SUBPART
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Toeboards prevent tools or materials from becoming falling objects.
Add screen or mesh if tools or materials extend above toeboards.
Store materials minimum 10’ from edge.
ToeboardsM
SUBPART
17Fall Protection
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Guardrails must be functional & maintained.
Nails, Screws, or Bolts Clamps
Brackets
Turnbuckles
Jacks or Supports
Guardrails Installed
Fall Protection 18SUBPART
M
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Guardrails can be made of many different materials and still meet OSHA requirements.Prefab Metal
Frame
Job Built
Wire Mesh Filled
Cable or Wire
Metal Frame with Wire Mesh
Plastic and Wire
Snow Fence if Suitable
Guardrail TypesM
SUBPART
19Fall Protection
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Job-Made Wood Guardrail Systems
Fall Protection 20SUBPART
M
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Manufactured Guardrail Systems
This is one type of available guardrails foruse on flat roofs.
Fall Protection 21SUBPART
M
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Guardrails are a good choice for fall prevention. They are part of 100% fall protection in most work environments.
Advantages:
Disadvantages:
– Low cost and easy to install– Well known purpose– Passive system - provides real
barrier between worker and fall hazard
– May interfere with work– Easily removed and often not
reinstalled
Advantages/Disadvantages
Fall Protection 22SUBPART
M
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Cover all floor, ceiling, or working surface holes that are larger than 2 inches.– In roadways, must support
twice maximum axle load.– All others must support twice
the weight of employees, equipment, and materials that might be imposed at one time.
– Secure from displacement by wind, equipment, or workers.
– Color coded or marked “hole” or “cover.”Cover holes as soon as they are
created.
Hole CoversFall Protection 23M
SUBPART
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Skylights or larger deckholes can be covered,surrounded by barriers orhave nets put underneath.
Inadequate “cover”
Preventing Falls Through Roof HolesFall Protection 24M
SUBPART
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Floor/Deck Hole Covers
Secured? Clearly Marked? Capable of supporting 2X weight imposed?
Fall Protection 25SUBPART
M
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Holes in Deck During Repair
Protection must be provided as soon as hole is created:
• Cover over• Guardrail around• Net under• Tie workers back
Fall Protection 26SUBPART
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Body harness, lines, connecting devices, and anchor points used to stop a fall.
If one of these parts fails, the system fails.
Personal Fall Arrest Systems (PFAS)
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Most body harnesses have these parts:– Shoulder straps– Shoulder strap
retainer– Dee-ring– Waist strap– Thigh straps– Sub-pelvic support– Adjustment bucklesSome designs may not have
waist straps or sub-pelvic supports.
Body Harness
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– Capable of supporting at least 5,000 pounds per attached
employee or used as part of an engineer-designed system that maintains a safety factor of at least ‘2’.
– Independent of any anchorage being used to support or suspend platforms.
Personal fall arrest must never be attached to guardrails.
OSHA has specific requirements: Anchorage
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M
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PFAS Devices
Roof bracket Rope grab on a lanyard withdeceleration device
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PFAS Devices31Fall Protection
SUBPART
M
Limits fall to 2 feet or lessMust be attached directly to “D” ring on harness
– Shock absorber may prevent lock up, or lead to ratchet effect.
Line must be protected from damage over edges.Install and inspect in accordance with manufacturer; some will work horizontally,while some will not.
Self-Retracting Lifeline
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PFAS Devices
Horizontal Life Lines
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PFAS Devices
Using a horizontal line as a tieback point.
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Permanently installed roof maintenance fall protection.
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PFAS Devices
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Using Personal Fall Arrest Systems PFAS is an active means of fall
protection. You must understand its proper use,
application and limitations. If you are not properly “tied off” you
will not be protected in the event of a fall.
Apply PFAS as if you expect to fall – what will happen?
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Making the PFAS Work for You Think before you tie! Will you stop?
– What are you attached to? Making the connection
– Make sure the lock on your hook is working.– Do not wrap around & hook back to lanyard.– Do not shorten the lanyard with a knot.– If possible, always hook up at ‘D’ ring height.– Do not hook lanyards together.
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Making PFAS Work for You OSHA Requirements for PFAS
– Maximum “Free Fall” is to be 6 feet.– Maximum force on your body when you
come to a stop is 1800 pounds.• Actual force depends on your weight & fall
distance.• The shorter the fall the better.
– Maximum deceleration distance is 3.5 feet.• Stopping distance after your lanyard becomes
tight & the shock absorber begins to stretch.
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Making the PFAS Work for You Other variables – what happens as you fall?
– Clearance distance – will you hit anything?• 6 Ft. + 3.5 Ft. + 5 Ft. + stretch + ‘D’ ring height.
– Swing fall hazard - will you be a pendulum?• Are you anchored directly overhead?
– RESCUE! • If PFAS is your protection, then your employer’s fall
protection program must have a way to get you down.
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PFAS Advantages & Disadvantages Advantages:
– Effective anywhere there is an anchorage.– Requires little time to employ; is adaptable.
Disadvantages:– The equipment is subject to wear and
damage; it must be inspected and maintained.
– Work habits may have to be changed to accommodate its use.
– Requires considerable training.
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M
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Hung beneath the work area to catch workers or debris.– Installed as close as possible under the
walking/working surface - never more than 30 feet below working levels.
– Must extend 8 to 13 feet outward from outermost projection of work surface.
– Must be inspected weekly.– Any debris that falls into the net must be
removed before the end of the work shift.– Not commonly used in roofing.
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M
Safety Nets
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Safety Nets
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Subpart M allows alternatives for pre-cast concrete, leading edge work, overhead bricklaying, roofing and residential construction.
The employer must prove conventional protection is infeasible or would cause a greater hazard and then develop a written fall protection plan – except in roofing, overhand bricklaying, and residential construction.
Controlled Access Zone
Warning Line System
Safety Monitori
ng System
Alternative Measures to Conventional Fall Protection
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M
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Used only on low-sloped roofs.
Barrier to warn workers approaching the edge.
– Defines area where roofing work can be done without conventional fall protection.
– Consists of ropes, wires, or chains, and stanchions erected around all sides of the roof.
– High-visibility flags not more than 6’ apart.
– Line is no more than 39” and no less than 34” from surface.
Warning Lines43Fall Protection
SUBPART
M
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Must be functional, not just visual.– Minimum 500 pounds tensile strength– Stanchions resist 16 lbs. tipping force– Secured at each stanchion so line doesn’t pull through when contacted.– Install line and stanchions according to the manufacturer.– Adjust as necessary – lines may stretch as the day gets hotter.
Warning Lines44Fall Protection
SUBPART
M
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Manual work: place line >6’ from edge.
Mechanical work: place line >6’ from edge parallel to equipment direction and >10’ from edge perpendicular to equipment direction. Workers cannot operate mechanical equipment outside of warning line without use of conventional fall protection.
Warning Lines45Fall Protection
SUBPART
M
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Use of a Competent Person to warn workers near edges.– Permitted only for precast
concrete erection, leading edge work, roofing, and residential construction.
–Competent Person must be:• competent in recognizing fall hazards• capable of warning workers• operating on same surface• close enough to communicate orally
Safety Monitoring System46Fall Protection
SUBPART
M
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Safety Monitoring System2
Competent Person must not be performing other work that will distract from watching the workers.
Cannot be used alone on:– Roofs greater than 50 feet wide– Roofs sloped greater than 4-in-12– Metal or tile rrofs sloped greater than 8-in-12
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Area where work can go on without fall protection.
No protection for workers in the zone.
–Limits access to authorized workers
–Defined by control lines, barriers, markers
–Control lines are rope, wire, or tape
–Must be flagged at intervals of 6’ or less
Controlled Access Zone48Fall Protection
SUBPART
M
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Controlled Access Zone Lines must be between 39” and 45” high. Must sustain stress not less than 200
pounds. Must extend length of unprotected edge
and be parallel with it. Each end must connect with guardrail
system or wall. Erected not less than 6’ and not more than
60’ from the edge.
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Control line distances determined by work.
Controlled Access Zone Size
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CAZ not permitted for roofing work.
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Fall Protection Options for Low-Slope Roofs
Definition: Slope less than 4:12 Guardrail, safety net, or PFAS required at 6
feet, or, a combination of: – Warning line and guardrail– Warning line and safety net– Warning line and PFAS– Warning line and safety monitor
Safety monitor can be used alone on low-slope roofs less than 50 feet wide
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Low-Slope Roofs – Perimeter Guarding
Wall-Mounted Guardrail Systems
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Extending the parapet wall
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Low-Slope Roofs – Perimeter Guarding
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Low-Slope Roofs – Perimeter Guarding
Guardrail for parapet walls
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Parapet Walls less than 39”
Low-Slope Roofs – Perimeter Guarding
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Low-Slope Roofs -Perimeter Guarding
Providing protection Ignoring the hazard
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This is one manufacturer’sdesign of a moveable anchor for restraint or fall arrest for2 workers.
Fall ProtectionSUBPART
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Low-Slope Roofs - PFAS57
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Low- Slope Roofs
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When does “Fall Hazard Awareness” begin?
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Fall Hazard Awareness?
Low-Slope Roofs
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Low-Slope Roofs
What is wrong with this picture????
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Low-Slope Roofs
Barrier tape isnot an adequatewarning line as itprovides no resistance to a person contactingit.
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Low-Slope Roofs
Why won’t this line work?
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Fall ProtectionMSUBPART
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Low-Slope Roofs
Where is the Safety Monitor?
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Low-Slope Roofs
This worker has a “tie back” that won’t protect him froma vertical fall.
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Is this adequate protection?
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Low-Slope Roofs65Fall Protection
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Guardrail? Warning Line?
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Fall Protection Options for Steep Roofs
Defined as greater than 4:12 pitch OSHA Subpart M requires conventional
fall protection at 6 feet Exception only for residential
construction
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Steep Roofs - PFAS
Anchorages
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Steep Roofs – Guardrail Systems
Protection Before You Start
Facia Rail Platform Rail
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Steep Roofs – Guardrail SystemsAnother version - Guardrail installed after roof edge is finished.
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Steep Roofs – Guardrail Systems
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This type will work on sloped or flat surfaces or connect to a scaffold coupling pin.
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Steep Roofs – Guardrail Systems
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Steep Roofs – Guardrail Systems
This kind mounts on a pivoted bracket and places the guard rail past the gutter line.
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Steep Roofs - Applying Standing Seam Metal
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Steep Roofs - Applying Standing Seam Metal2
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Residential Construction75Fall Protection
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Six foot fall protection rule is modified by STD 3-0.1A, allowing alternative procedures for certain “residential construction” activities, including roofing work. Residential means same methods and materials as single family home construction – wood frame construction.
– Includes ‘discrete parts” of commercial buildings, such as shingled entranceways.
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Residential Construction
Does thisstructure meet the “residential”definition?
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Residential Construction – Roofing Activities
Alternative fall protection procedures can be used for residential roofing activities only if:– The roof slope is < 8:12, and – The fall distance, measured from the eave
to the ground level, is 25 feet or less.
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General Requirements: – Workers must be specially trained in the fall protection
measures to be used.
– Roof must be inspected for roof hazards and workers must wear appropriate footwear to avoid slipping.
– Work must be suspended for bad weather.
– Holes or openings must be covered or guarded, and damaged areas of roof deck must be repaired ASAP.
Residential Construction – Roofing Activities
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General Requirements: – Ladders and scaffolds must be used in accordance
with Subparts X & L.
– Workers cannot go up or down slope within 6 feet of the rake edge.
– Supplies and materials cannot be sotrd within 6 feet of the rake edge or 3 feet where tile systems are being installed.
– The area must be cleared of impalement hazards.
Residential Construction – Roofing Activities
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Fall Protection Options for Residential Construction - Roofing
Safety Monitors and Slide Guards– Slopes up to 4:12 (any roof type) – safety
monitor or slide guards– Slopes 4:12 to 8:12 (except tile or metal) –
slide guards required– Slopes < to 8:12 (tile or metal roofs) –
safety monitor alone can be used– Slopes > 8:12 – no alternatives to
conventional fall protection– Eave height > 25 feet – no alternatives
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Slide Guards Must be made of 2” x 6” stock with face
near 900 to deck. For 6:12 or less - continuous row at eave,
maximum 3 rows up. Roof Jacks or other support must be
nailed to take someone sliding into it. 6:12 to 8:12 – placed at eave and every 8
feet placed as work continues up slope;don’t have to be at 90 degrees to deck.
Remove while coming down; eave guards last.
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Slide Guards & Roofing Brackets
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Slide Guards
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Fall hazard awareness? Can 3-0.1A be applied here?
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Residential Construction
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Residential Construction
How could we protect these roofers?
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Residential Construction
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What would be acceptable for this application?
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Residential Construction
Could these pump jacks be considered fall protection?
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Evaluating the Roofing Job for Fall Hazards
Consider this:– Is the roof low-sloped (flat) or steep?– What is the best means of access?
• Ladders? Scaffold Stair Tower? Already available inside or outside ladder or stairway?
• What fall hazards will access create?
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Evaluating the Low-Slope Roofing Job for Fall Hazards
Consider this:– Is there a parapet wall or other perimeter
high enough to be adequate protection?• If not, can guardrails be installed, and what kind?
– Are there skylights or other deck openings?• Will covers, guardrails or nets be used?
– Are there areas to be replaced which will create temporary holes?
• What protection will be used during the repair process?
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Evaluating the Low-Slope Roofing Job for Fall Hazards
Consider this:– Will a warning line and safety monitor system
be adequate?– Who is to be designated safety monitor?
• Are they adequately trained and experienced?– What protection will be needed for access and
hoist/material-receiving areas?• Can a tie-back system be established?
– Are all potential workers trained in the recognition and control of fall hazards for this type of roof?
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Evaluating the Steep Roofing Job for Fall Hazards
Consider this:– What is the slope and shape of the roof?– What kind of material surface does it have?
• Slate, asphalt shingle, tile, metal?– How high are the eaves?– What means of access will be used?
• Ladders, Ladder jacks, Pump jacks, Scissor lift, or Frame scaffold?
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Evaluating the Steep Roofing Job for Fall Hazards
Consider this:– Does this roof meet the criteria for STD
3-0.1A?• Materials and methods similar to single
family home construction?• Eaves less than 25 feet; total height less than
3.5 stories or 48 feet?– Are all potential workers trained in the
recognition and control of fall hazards for this type of roofing?
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Fall Protection(29 CFR 1926.500 - .503)
Common OSHA Citations:– .501(b)(1): Unprotected sides & edges – fall protection– .503(a)(1): Fall hazards training program– .501(b)(13): Fall protection – residential – .501(b)(10): Fall protection – low-sloped roofs– .501(b)(4)(i): Fall protection – holes &
skylights How can the hazards addressed by these
Standards best be corrected, controlled, or eliminated?
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Review Questions True or False?
1. As a general rule, fall protection is required at six feet.
2. It doesn’t matter how far you fall as long as you stop before you hit the ground.
3. Guardrail systems are a means of fall prevention.
4. The top rail of a guard rail system must be at 42” plus or minus 3”, or 39” - 45”.
5. A PFAS anchor point must be able to withstand 5000 pounds or 2x the force that will be applied during a fall.
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Review Questions True or False?
6. A Safety Monitor can be anybody who is watching.
7. Deck holes bigger than 2 inches must be covered.
8. The height of a warning line must be 34”- 39”.
9. Warning lines need to be at least four feet from the edge.
10.Warning lines must be 10 feet from the edge in the direction of travel if equipment is being used.
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Review Questions True or False?
11.Roofers can be outside the warning line if there is a monitor and no equipment is used.
12.Warning lines must have a 500 pound tensile strength.
13.A deck hole cover must support at least twice the weight which may be put on it.
14.A low-sloped roof does not need a warning line or guard rails if the parapet wall is 2 feet high.
15.Residential roofers can only use slide guards placed according to slope and eave height.
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