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Subpart R: Standard Overview 1926.750 Key Provisions Of The Revised Subpart R Standard Requires fall protection at 15 feet Exception: Connecting and Decking Zone Includes a Multiple Lift Rigging Procedure for up to five structural members

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key provisions of the revised subpart r standard
Key Provisions Of The Revised Subpart R Standard
  • Requires fall protection at 15 feet
    • Exception: Connecting and Decking Zone
  • Includes a Multiple Lift Rigging Procedure for up to five structural members
  • Requires that shear connectors be installed after the structural member is erected
  • Requires that decking holes and openings not be cut until essential to the construction process
  • Requires a minimum of four anchor rods (anchor bolts) on all columns
key provisions of the revised subpart standard cont
Key Provisions Of The Revised Subpart Standard (cont)
  • Requires controlling contractors to notify steel erectors of repairs or modifications to anchor rods (anchor bolts)
  • Addresses “double connections,” installation of steel joists, and landing of loads to avoid collapses during steel erection
  • Addresses slippery surfaces on beams and decking
  • Contains a separate section on Systems Engineered Buildings
phase in of certain requirements
Building Construction:

Building Permit obtained prior to January 18, 2001

Where Steel Erection began on or before September 16, 2001

Bridge Construction:

Bridge Project has a contract date before January 18, 2001

Steel Erection began before September 16, 2001

Phase-In of Certain Requirements
key provisions of the revised subpart r standard5
Key Provisions Of The Revised Subpart R Standard
  • Requires controlling contractors to provide adequate site access and adequate storage space to the steel erector
  • Requires a stabilizer plate on columns for tie joist (TJ) and joist girders to provide an attachment point for guying or plumbing up of cables
  • Provides guidelines for a non-mandatory site specific erection plan
key provisions of the revised subpart r standard6
Key Provisions Of The Revised Subpart R Standard
  • Requires fall protection training for all employees exposed to fall hazards
  • Allows a Controlled Decking Zone for decking installations at heights of 15-30 feet
  • Requires controlling contractor to provide overhead protection or not allow construction underneath steel erection activities
subpart r final rule
SubpartR - Final Rule
  • The Steel Erection Rule was published on January 18, 2001.
  • Effective date January 18, 2002
1926 750
1926.750

Scope:

  • This subpart sets forth requirements to protect employees from the hazards associated with steel erection activities involved in:
    • Construction, alteration, and/or repair of single and multi-story buildings, bridges, and other structures where steel erection occurs.
1926 750 scope and application cont
Application:

Hoisting

Connecting

Welding

Guying/Bracing

Bolting

Plumbing/Rigging

Steel joists and metal buildings

Installing metal deck, curtain walls, window walls, siding systems

Miscellaneous metals

Ornamental iron

Similar metals

Moving point to point

1926.750Scope and Application (cont)
scope cont
Scope (cont.)

Does not include:

  • Electrical transmission towers,
  • communication and broadcast towers,
  • Tanks

Ironworker using rope grabs tomake tower connection.

duties of controlling contractor under this subpart
Duties of Controlling Contractor under this subpart
  • Written notification to the steel erector:
    • Concrete in piers/walls is cured re ASTM spec
    • Modifications/repairs to anchor bolts approved by project engineer (.752(a); .755(b))
  • Adequate on-site access roads (.752(c))
  • Preclude work below steel erection unless there is overhead protection (.759(b))
  • Choose whether to accept responsibility for maintaining fall protection equipment left by steel erector (otherwise must be removed) (.760(e))
1926 752 site layout erection plan and construction sequence
1926.752 Site Layout, Erection Plan and Construction Sequence
  • Approval to begin steel erection:
    • Curing of concrete 752(a)
    • Repairs/modifications to anchor bolts 755(b)
  • Site layout
    • Adequate roads into and through the site 752(c)(1)
    • Adequate space for the safe storage of materials 752(c)(2)
  • Pre-plan hoisting operations 753(d)
  • Modifications made to site-specific plan if equivalent protection is provided.
    • Safety latches on hooks activated 753(c)(5)
    • Landing decking on steel joists (.757(e)(4))
1926 750 c specific controlling contractor duties
§1926.750 (c) Specific Controlling Contractor Duties
  • Written notification to the steel erector:
    • Concrete in piers/walls is cured re: ASTM spec
    • Anchor belt modifications/repairs approved by project engineer (.752(a) and .755(b)
1926 750 c specific controlling contractor duties17
§1926.750(c) Specific Controlling Contractor Duties
  • Adequate on-site access roads [.752(c)]

Before and after photos

1926 750 c specific controlling contractor duties18
§1926.750(c) Specific Controlling Contractor Duties
  • Preclude work below steel erection unless there is overhead protection [.759(b)]
  • Choose whether to accept responsibility for maintaining fall protection equipment left by erector (otherwise it must be removed) [.760(e)]
competent person
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 take prompt corrective measures to eliminate them.
connector
Connector
  • An employee who, working with hoisting equipment, is placing and connecting structural members and/or components.
controlling contractor
Controlling Contractor
  • Means a prime contractor, general contractor, construction manager or any other legal entity which has the overall responsibility for the construction of the project -- its planning, quality and completion.
qualified person
Qualified person
  • One who, by possession of a recognized degree, certificate, or professional standing, or who by extensive knowledge, training, and experience, has successfully demonstrated the ability to solve or resolve problems relating to the subject matter, the work, or the project.
shear connector
Shear Connector
  • Headed steel studs, steel bars, steel lugs, and similar devices which are attached to a structural member for the purpose of achieving composite action with concrete.
site specific erection plan
Site-Specific Erection Plan
  • Requires pre-planning of key erection elements, including coordination with controlling contractor before erection begins, in certain circumstances.
steel erection
Steel Erection
  • Construction, alteration or repair of steel buildings, bridges and other structures, including the installation of metal decking and all planking used during the process of erection.
1926 752 site layout erection plan and construction sequence26
§1926.752 Site Layout, Erection Plan and Construction Sequence
  • Certification of:
    • Proper curing of concrete in footings, piers, etc. for steel columns
    • Anchor bolt repairs, modifications
  • Pre-plan hoisting operations
1926 753 hoisting and rigging
1926.753 Hoisting and Rigging
  • Provisions of 1926.550 apply to hoisting and rigging (except 1926.550(g)(2) (note: OSHA adopted 1994 ANSI B-30.5 for subpart R only)
  • Pre-shift visual inspections of cranes 753(c)
  • Working under loads 753(d)
  • Multiple lift rigging procedures 753(e)
    • Maximum of five members hoisted
    • Only beams and similar structural members lifted
    • Employees trained in accordance with 761(c)(1)
    • No lift if contrary to manufacturer’s specifications and limitations
multiple lift rigging cont
Multiple lift rigging (cont)
  • Rigging must be specifically designed with a 5 to 1 safety factor
  • Multiple lift rigging assembly must be rigged with members at their center of gravity and maintained reasonably level
  • Rigged from top to bottom and rigged at least 7 feet apart
  • Members must be set from the bottom up
1926 754 structural steel assembly
1926.754 Structural Steel Assembly
  • Provides specific work practices for:
    • Maintaining structural stability 754(b)
    • Landing deck bundles 757(e)(4)
    • Minimizing fall hazards in interior openings 754(b)(3)
  • Walking/working surface requirements:
    • Tripping hazards: shear connectors (and similar projections) generally prohibited until decking is down 754(c)(1)(ii)
    • Slip resistance: criteria for painted structural steel members (effective 5 years after the rest of standard) 754(c)(3)
structural steel cont
Structural Steel (cont)
  • Roof and floor holes and openings:
    • Framed metal deck openings must have structural members turned down to allow for continuous deck installation
    • Elevator shafts, stair wells, etc., must be decked over or employees must be protected in accordance with 760(a)(1)
    • Metal decking holes and openings must not be cut until immediately prior to being permanently filled
    • Gaps around columns must be covered
structural steel cont31
Structural Steel (cont)
  • Metal decking:
    • Metal decking must be laid tightly and secured immediately upon placement except as provided in 760(c)
    • Derrick floor must be decked and/or planked and the steel member connections completed to support the intended load
    • Loads placed on the derrick floor must be distributed over the underlying support members to prevent local overloading
1926 754 structural steel assembly32
§1926.754 Structural Steel Assembly

Covers for floor or roof openings shall be secured and marked with the word HOLE or COVER

No securement or marking to indicate the opening.

Cover marked and secured

1926 755 column anchorage
1926.755 Column Anchorage
  • Minimum of 4 anchor rods (anchor bolts)
  • Set on level finished floor, pre-grouted leveling plates, leveling nuts, or shim packs
  • Competent person will determine whether guying or bracing is needed
  • Engineer of record will approve all repairs/replacements or modifications of anchor rods (anchor bolts)
1926 755 column anchorage35
1926.755 Column Anchorage

Column would not align with the j-boltsso the steel erector cut holes and weldedtabs to hold column.

1926 756 beams and columns
1926.756 Beams and Columns
  • Two bolts per connection prior to releasing hoisting line (competent person will determine if more than two are needed)
  • Diagonal bracing (solid web) will be secured by at least one bolt per connection
  • Safe procedures/devices for making double connections at columns
  • Requirements to facilitate quick installation of perimeter safety cables:
    • Column attachments or holes in columns for perimeter safety cables
    • Column splice height and strength specified
1926 756 beams and columns37
§1926.756 Beams and Columns

One bolt is installed wrench tight.Two will be installed. The spud wrench holds the beam until theother connector can make his initial connection.

1926 756 beams and columns38
§1926.756 Beams and Columns
  • Requires one bolt to remain connected for double connections unless seat or equivalent used
  • Seats for double connections shall be designed for the load during the double connection process
1926 757 open web steel joists
1926.757 Open Web Steel Joists
  • Addresses proper joist end attachment, erection procedures
    • General requirements for the erection of steel joists
    • Stabilization of joists (vertical stabilizer plate)
    • Holes in joists/bolting required for joists in 40’+ bays
  • Requirements for landing and placing loads on joists
  • Some requirements may be modified through a site-specific erection plan
1926 757 open web steel joists40
§1926.757 Open Web Steel Joists
  • Hoisting cables not be released until field bolted.
  • A vertical stabilizer plate required for each column for steel joists.

Workers making initial connectionfrom two arial lifts.

1926 758 system engineered metal buildings
1926.758 System-Engineered Metal Buildings
  • All requirements of this subpart apply to erection except 755 (column anchorage) and 757 (open web steel joists)
  • Minimum of 4 anchor rods (anchor bolts) for structural columns
  • Rigid frames will have 50 percent of their bolts or the number of bolts specified by the manufacturer (which ever is greater) installed and tightened before the hoisting equipment is released
system engineered metal buildings cont
System-Engineered Metal Buildings (cont)
  • Loads being placed on structural steel prior to bolting or welding
  • Girt and eave strut-to-frame connections
  • Steel joists/cold-formed joists
  • Using purlins as walking/working surfaces
  • Load placement within 8 feet of support member
1926 759 falling object protection
1926.759 Falling Object Protection
  • Secure loose items aloft
  • Controlling contractor to bar other operations below steel erection unless falling object protection provided
1926 759 falling object protection does not apply to materials being hoisted
§1926.759 Falling Object Protection (does not apply to materials being hoisted)

Ironworkers have material securedin aerial lift

1926 760 fall protection
1926.760 Fall Protection
  • All must be protected at heights greater than 2 stories or 30 feet, including connectors and deckers
  • Between 15 and 30 feet: Fall protection required for all with exceptions for:
    • Deckers in controlled decking zone (CDZ) and
    • Connectors
      • Connectors must be provided and wear equipment necessary to be able to be tied-off, or be provided with other means of fall protection
1926 760 fall protection cont
1926.760 Fall Protection (cont.)
  • Controlled decking zone:
    • Max Dimensions 90’ by 90’
    • For leading edge decking work
      • limited access
      • designated boundaries by control lines
      • Work practices for attaching deck:
        • install safety attachments from leading edge back
        • no final attachments allowed in CDZ
        • up to 3000 SF of unsecured decking
      • specific training requirements
1926 760 fall protection cont47
1926.760 Fall Protection (cont.)
  • Perimeter cables required
    • Must be installed “as soon as the metal decking has been installed”
  • Custody of Fall Protection Equipment:
    • Controlling contractor must choose to either:
      • accept responsibility for maintaining fall protection equipment left by erector,
      • OR ensure that it is removed (.760(e))
1926 760 fall protection48
§1926.760 Fall Protection

Ironworker using the “beemer”system of fall arrest.

1926 760 fall protection cont49
§1926.760 Fall Protection (cont.)
  • Guardrails and nets used at opening in back
  • Note: ladder not long enough

.

1926 761 training
§1926.761 Training
  • Qualified person to train workers in use & operation of fall protection equipment
  • Qualified person to train workers engaged in specific activities:
    • “christmas-treeing
    • connecting
    • CDZ procedures
osha s web site
OSHA’s Web Site
  • The complete standard can be obtained from our web site at www.osha.gov.
appendices
Appendices
  • A-Guidelines for site-specific erection plan (NM)
  • B-Slip-resistance test methods (NM)
  • C-Illustrations of bridging terminus points (NM)
  • D-Control lines for controlled decking zones (NM)
appendices53
Appendices
  • E-Training compliance (NM)
  • F-Perimeter safety cables (NM)
  • G-Fall protection system criteria (M)
  • H-Double connection illustrations (NM)
framed metal deck openings
Framed metal deck openings

Must be turned down to allowcontinuous deck installationexcept where not allowed by structural design.

system engineered metal buildings
System-Engineered Metal Buildings

Minimum of four anchorrods (anchor bolts)for structural columns

diagonal bracing
Diagonal bracing

Solid web structural membersused as diagonal bracing must be secured by at least one bolt per connection drawn up wrench tight or the equivalentas specified by the project’s structural engineer on record.

systems engineered metal buildings
Systems-Engineered Metal Buildings

Rigid frames will have 50%of their bolts or the number ofbolts specified by the manufacturer (whichever isgreater) installed and tightened before the hoistingequipment is released

falling object protection
Falling object protection

Secure all loose items aloft