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1、OSHA 29 CFR 1926-Subpart M,Safety Standards for Fall Protection in the Construction IndustryEffective:February 6,1995,Total Construction Fatalities1985-1993,Falls FromElevation 33%,Caught In/Between 18%,Struck By 22%,Shock 17%,Other 10%,Falls From Elevation-Breakdown,Roof 27%,Other 16%,Scaffold 17%,
2、Steel Erection 10%,Floor Opening 7%,Aerial Lift Basket 3%,Suspended Platform/Vehicle 3%,Concrete Erection 3%,Ladder 8%,Open Sided Floor 4%,Number of Construction Fatalities Due to Falls 1985-1993,Analysis of Heights For Construction Fatalities Caused by Falls 1985-1993,Construction Activity%of Total
3、 Fatalities 1985-1993,Painting,Paper Hanging and Decorations-63%,Plumbing,Heating and Air Conditioning-31%,Heavy Construction,except Highway&Street-15%,Highway and Street,except Elevated Highways-2%,Building Construction-Nonresidential-50%,Building Construction-Residential-29%,Construction Activity(
4、Contd)%of Total Fatalities 1985-1993,Miscellaneous Special Trade Contractors 47%,Concrete Work 30%,Roofing,Siding and Sheet-Metal Work 73%,Carpentry and Floorwork 63%,Masonry,Stonework,Tile Setting and Plastering 62%,Electrical Work 24%,1926.500(a)(1)Scope and Application,Whos Affected by Subpart M?
5、EVERYONE EXCEPT:,Employees making an inspection.Employees working on scaffolds.(Subpart L)Employees working on stairways and ladders.(Subpart X)Employees working on equipment used in tunneling operations.(Subpart S),Whos Affected by Subpart M?EVERYONE EXCEPT:,Employees engaged in the construction of
6、 electric transmission,distribution lines,and equipment.(Subpart V)Employees working on cranes and derricks.(Subpart N)Employees performing steel erection work in buildings.(Subpart R),1926.500(b)Definitions,1926.501(b)(1)Unprotected Sides and Edges,1926.501(b)(2)Leading Edges,Exception:,When the em
7、ployer can demonstrate that it is infeasible or creates a greater hazard to use these systems,the employer shall develop and implement a fall protection plan.,Definition,Infeasible-means that it is impossible to perform the construction work using a conventional fall protection system(i.e.,guardrail
8、 system,safety net system,or personal fall arrest system)or that it is technologically impossible to use any of these systems to provide fall protection.,1926.501(b)(3)Hoist Areas,1926.501(b)(4)Holes,1926.501(b)(5)Formwork and Reinforcing Steel,1926.501(b)(6)Ramps,Runways,and Other Walkways,1926.501
9、(b)(7)Excavations,1926.501(b)(8)Dangerous Equipment,1926.501(b)(9)Overhand Bricklaying and Related Work,1926.501(b)(10)Roofing Work On Low-Slope Roofs,1926.501(b)(11)Steep Roofs,1926.501(b)(12)Precast Concrete Erection,Exception:,When the employer can demonstrate that it is infeasible or creates a g
10、reater hazard to use these systems,the employer shall develop and implement a fall protection plan.,1926.501(b)(13)Residential Construction,Exception:,When the employer can demonstrate that it is infeasible or creates a greater hazard to use these systems,the employer shall develop and implement a f
11、all protection plan.,1926.501(b)(14)Wall Openings,1926.501(b)(15)Walking/Working Surfaces Not Otherwise Addressed,1926.501(c)(1)Protection From Falling Objects,Erect toeboards,screens,or guardrail systems to prevent objects from falling.,1926.501(c)(2)Protection From Falling Objects,Canopy Structure
12、,Barricade,1926.502(b)GuardrailSystems,1926.502(b)(1),(2)&(14),Top edge height shall be 42”+/-3”from walking/working level,and able to withstand 200 lbs.of force.Midrails shall be installed at a height midway between top edge and walking/working level,and able to withstand 150 lbs.of force.,1926.502
13、(b)(9)Guardrail Systems,Top rails and midrails shall be at least 1/4 inch nominal diameter.Top rail shall be flagged at not more than 6-foot intervals with high-visibility material.,1926.502(b)(13),Guardrails at points of access shall be provided with gates or offset to that a person cannot walk dir
14、ectly into the hole.,1926.502(c)Safety Net Systems,1926.502(c)(1)Safety Net Systems,Install as close as practicable under the walking/working surface on which employees are working,but in no case more than 30 feet below such level.,1926.502(c)(2)Safety Net Systems,Net Extension 5 feet and 10 feet10
15、feet 13 feet,1926.502(c)(3)Safety Net Systems,Install with sufficient clearance to prevent contact with any surfaces or structures below.,1926.502(c)(4)Safety Net Systems,When the employer can demonstrate that a drop test is unreasonable,the employer shall certify that the net and installation can m
16、eet an impact force equivalent to the impact forces of a drop test.,Definition,Competent Person-means one who is capable of identifying existing and predictable hazards in the surroundings,or working conditions which are unsanitary,hazardous,or dangerous to employees,and who has authorization to tak
17、e prompt corrective measures to eliminate them.,1926.502(c)(5)&(6)Safety Net Systems,Inspect nets weekly for wear,damage,and other deterioration.,Remove any materials,scrap,equipment,and tools,that have fallen into net.,1926.501(c)(7)Safety Net Systems,Maximum mesh opening shall not exceed 36 sq.inc
18、hes nor longer than 6 inches on any side.Mesh crossings shall be secured to prevent enlargement of mesh opening.,1926.501(c)(8)&(9)Safety Net Systems,Minimum breaking strength for border rope webbing is 5,000 lbs.Connections shall be as strong as net components.Connections shall be spaced not more t
19、han 6 inches apart.,1926.502(d)Personal FallArrest Systems,1926.502(d)Personal Fall Arrest Systems,Connector means a device which is used to couple(connect)parts of the personal fall arrest system and positioning device systems together.It may be an independent component of the system,such as a cara
20、biner,or it may be an integral component of part of the system(such as a buckle or dee-ring sewn into a body belt or body harness,or a snap-hook spliced or sewn to a lanyard or self-retracting lanyard.),1926.502(d)(8)Personal Fall Arrest Systems,Horizontal lifelines shall be designed,installed,and u
21、sed,under the supervision of a qualified person,as part of a complete personal fall arrest system,which maintains a safety factor of at least two.,Definition-from 1926.32(l),Qualified Person-means one who,by possession of a recognized degree,certificate,or professional standing,or who by extensive k
22、nowledge,training,and experience,has successfully demonstrated his ability to solve or resolve problems relating to the subject matter,the work,or the project.,1926.502(d)Personal Fall Arrest Systems,Rope Grab means a deceleration device which travels on a lifeline and automatically,by friction,enga
23、ges the lifeline and locks so as to arrest the fall of an employee.Lanyards and vertical lifelines shall have a minimum breaking strength of 5,000 lbs.Each employee shall be attached to a separate lifeline.,1926.502(d)(12)Personal Fall Arrest Systems,Self-retracting lifeline/lanyard means a decelera
24、tion device containing a drum-wound line which can be slowly extracted from,or retracted onto,the drum under slight tension during the normal employee movement,and which,after onset of a fall,automatically locks the drum and arrests the fall.,1926.502(d)(12)&(15)Anchorage,Limit free fall distance to
25、 2 ft.or less and able to sustain a 3,000 lb.min.tensile load.,Capable of supporting at least 5,000 lbs.per employee attached.,*t=(2h/g)or:How Long Does It Take To Fall?,Height(feet)Time(seconds)4 0.516 1.036 1.564 2.0100 2.5144 3.0256 4.0576 6.0,.5,g=Gravitational Constant of 32.2 ft/s h=Height of
26、Fall in feet t=Time of Fall in seconds,2,*,Velocity,v=(2gh),v=Velocity,assuming no initial velocityg=Gravitational Constant of 32.2 ft/sh=Height of fall in feet,.5,2,Momentum Of Fall,M=mv,M=Momentum in foot-pounds/secondm=Mass in poundsv=Velocity,assuming no initial velocity,Skull Fracture,2Eg m 50
27、x 2 x 32.2 12 16.3 ft/sec,E=Kinetic Energyg=Gravitational Constantm=Weight of an average human head,A skull would fracture at approximately 50 foot-pounds/second.The velocity of a fracture is expressed in the equation:,v=,=,=,Peak Fall Arresting Forces-Forces Generated by 220 lbs Steel Weight Free-F
28、alling 6 ft,Force in lbs.,Determining Minimum Anchorage Point Height,C=ClearanceH=Anchor Point HeightL=Distance Between Anchorage Point and D-RingS=Deceleration Distance5=Harness D-Ring HeightFree Fall=5+L-H=6 max.OSHAClearance=5+L-H+S=9.5 Minimum Clearancewhere S=3.5 max.OSHA,1926.502(d)(16)&(17)Ha
29、rnesses,Limit maximum arresting force to 1,800 pounds.Rigged so that an employee cannot free fall more than 6 feet.Attachment point located in center of back near shoulder level.,1926.502(e)Positioning Device Systems,1926.502(f)Warning LineSystems,Warning-Line System,Erected around all sides of roof
30、 work area.6 feet from edge-10 feet when using mechanical equipment.Two warning lines at points of access,material handling,storage,and hoisting areas.Rope,wire,or chain flagged at not more than 6-foot intervals with high visibility material.,Warning-Line System,The rope,wire or chain shall be rigge
31、d or supported so that its lowest point is no less than 34 inches and the highest point is no more than 39 inches from the walking/working surface.Stanchions shall be capable of resisting,without tipping over,a force of at least 16 pounds applied horizontally against the stanchion 30 inches from the
32、 walking/working surface.,Warning-Line System,The rope,wire or chain shall have a minimum tensile strength of 500 pounds.The line shall be attached so that pulling on one section of the line will not result in slack being taken up in adjacent sections.Employees are not permitted between the roof edg
33、e and warning line unless performing roofing work in that area.,1926.502(g)Controlled Access Zones,1926.502(g)(1)Controlled Access Zones-Leading Edge,Extends parallel along the unprotected or leading edge.Control line connected to guardrail system or wall.Line situated not less than 6 feet nor more
34、than 25 feet from edge.,Consists of ropes,wires,and tape with a minimum breaking strength of 200 lbs.and is marked with high visibility materials at not more than 6 foot intervals.Stanchions rigged so that the lowest point is not less than 39 inches nor more than 45 inches.,1926.502(g)(1)Controlled
35、Access Zones-Leading Edge(contd),Control line erected not less than 6 feet nor more than 60 feet,or half the length of the member being erected,whichever is less,from the leading edge.,1926.502(g)(1)Controlled Access Zones-Precast Concrete,Lines erected not less than 10 ft.nor more than 15 ft.from t
36、he working edge.Lines extended to enclose all employees performing overhand bricklaying and related work.Lines erected at each end to enclose zone.Only employees engaged in work permitted in zone.,1926.502(g)(1)Controlled Access Zones-Overhand Bricklaying,1926.502(h)Safety Monitoring Systems,Safety-
37、Monitoring System,Competent person to monitorWarns employees nearing hazard On same walking/working surfaceWithin visual ContactAble to communicate orally with workersNo mechanical equipment used or stored in safety-monitoring system area,A shout may be the last thing a worker hears as he or she hur
38、tles to the ground.,1926.502(i)Covers,1926.502(i)Covers,1926.502(i)Covers,1926.502(i)Covers,1926.502(i)Covers,Capable of supporting twice the maximum axle load.Capable of supporting twice employee,equipment,and material weight.Secured to prevent accidental displacement.Color coded or marked with the
39、 word“HOLE”or“COVER”.,1926.502(j)Protection From Falling Objects,1926.502(j)(1),(2)&(3)Toeboards,Erected a sufficient distance to protect employees below.Able to withstand a force of 50 lbs.outward and downward.Minimum height of 3 and 1/2 inches with no more than 1/4 inch gap at walking/working surf
40、ace.,1926.502(j)(5)&(6)Guardrail System,Erect paneling or screening when material exceeds guardrail systems top rail.No materials or equipment stored within 4 feet of working edge.,1926.502(j)(8)Canopies,Canopies used for falling object protection shall be strong enough to support and prevent penetr
41、ation by any objects which might fall into canopy.,1926.502(k)Fall Protection Plan,Available for employees engaged in leading edge work,precast concrete erection work,or residential construction work only.Up to date,site specific plan prepared by qualified person,with a copy maintained at the job si
42、te.Changes to plan must be approved by qualified person.,Definition-from 1926.32(m),Qualified Person-a person who has successfully demonstrated his ability to solve or resolve problems relating to the subject matter,the work,or the project.,1926.502(k)Fall Protection Plan(Contd),Plan must document r
43、easons why conventional fall protection systems are infeasible or would create a greater hazard.Documentation of other measures taken to reduce or eliminate fall hazards for workers not using conventional fall protection.,1926.502(k)Fall Protection Plan(Contd),Plan must identify each location where
44、conventional methods cannot be used,and locations must be classified as controlled access zones.When alternative measures have not been implemented,a safety monitoring system shall be used.,Plan must state name or identify employees who are designated to work in controlled access zones.If an employe
45、e falls,or some other related serious incident occurs,the employer must investigate the circumstances of the fall or incident,and determine if the fall protection plan needs to be changed to prevent recurrence.,1926.502(k)Fall Protection Plan(Contd),1926.503 Training Requirements,The nature of falls
46、 in the work area.The correct procedures for erecting,maintaining,disassembling,and inspecting the fall protection system in use.The use and operation of guardrail systems,personal fall arrest systems,safety net systems,warning line systems,controlled access zones,and other protection to be used.,Ce
47、rtificate of Training,John Doe has successfully completed all the training provisions of fall protection for ABC Roofing Company on this date February 6,1995 Tony Maroni,President Noah Falls,Safety Director,1926.503 Training Requirements,The role of each employee when a safety-monitoring system is u
48、sed.Limitations of mechanical equipment during roofing work on low-sloped roofs.Correct procedures for the use,handling and storage of equipment and materials.The employees role in fall protection plans.,John Doe has successfully completed all the training provisions of fall protection for ABC Roofi
49、ng Company on this date February 6,1995 Tony Maroni,President Noah Falls,Safety Director,Certificate of Training,Appendix A to Subpart M-Determining Roof Widths,Example A-Rectangular Shaped Roofs,Example B-Sloped Rectangular Shaped Roofs,Appendix A to Subpart M-Determining Roof Widths,Example C-Irre
50、gularly Shaped Roofs With Rectangular ShapedSections,Appendix A to Subpart M-Determining Roof Widths(Contd),Example D-Separate Non-Contiguous Roof Areas,Appendix A to Subpart M-Determining Roof Widths(Contd),Example E-Roofs With Penthouses,Open Courtyards,Additional Floors,etc.,Appendix A to Subpart
