steel erection

Steel ErectionSteel Erection

These handouts and documents with attachments are not final, complete, or definitive instruments. This information is for guidance purposes only. You should independently verify and satisfy yourself as

to its accuracy. The AHBSIF does not assume any liability for damages arising from the use of this information or exhibits and attachments thereto and renders no opinion that any of the terms,

conditions, and/or cited federal standards in this document and the exhibits and attachments should be explicitly followed by the fund member. Seek specific guidance from the appropriate regulator (OSHA)

or professional advisor.

ScopeScope

The standard covers all employees engaged The standard covers all employees engaged in steel erectionin steel erection

Two lists of activities coveredTwo lists of activities covered PrimaryPrimary AncillaryAncillary

Activities not coveredActivities not covered Electrical Transmission TowersElectrical Transmission Towers Communication and Broadcast TowersCommunication and Broadcast Towers Tanks Tanks

Controlling Contractor Controlling Contractor ResponsibilitiesResponsibilities

►Erector must be provided with an Erector must be provided with an approval to begin steel erectionapproval to begin steel erection

►Location must have adequate on-site Location must have adequate on-site access roads (firm, properly graded)access roads (firm, properly graded)

►Trades working under steel erection Trades working under steel erection must have overhead protectionmust have overhead protection

► If fall protection is left behind by the If fall protection is left behind by the erector, it must be maintained or erector, it must be maintained or removedremoved

Erection PlanErection Plan

►Plan must be site specific and include Plan must be site specific and include the following:the following: Approval to begin steel erectionApproval to begin steel erection Written notifications furnished to erectorsWritten notifications furnished to erectors Footings and Walls must be adequate to Footings and Walls must be adequate to

support structuresupport structure Site Layout ProvisionsSite Layout Provisions Pre-planning of overhead hoisting Pre-planning of overhead hoisting

operationsoperations

Hoisting and RiggingHoisting and Rigging

► Mobile Crane InspectionMobile Crane Inspection

► The following items must be inspected at minimum;The following items must be inspected at minimum;

Wire rope and Wire rope and reevingreeving

Electrical equipmentElectrical equipment

All operational aidsAll operational aids Control mechanismsControl mechanisms

Fluid LevelsFluid Levels TiresTires

Hooks and latchesHooks and latches Hydraulic systemHydraulic system


►A Qualified Rigger must A Qualified Rigger must Inspect all rigging prior to the start of workInspect all rigging prior to the start of work Rig all loadsRig all loads

►Equipment may not be ridden at any Equipment may not be ridden at any timetime

►Equipment must be removed from Equipment must be removed from service if faulty in any wayservice if faulty in any way

►Only connectors and riggers are allowed Only connectors and riggers are allowed under loadsunder loads


► Christmas TreeingChristmas Treeing Maximum of 5 piecesMaximum of 5 pieces Lifted material must be Lifted material must be

of similar typeof similar type Decking bundles are Decking bundles are

prohibitedprohibited Employees must be Employees must be

trained in proceduretrained in procedure Multiple lift assembly Multiple lift assembly

must be professionally must be professionally engineeredengineered

Crane manufacturer Crane manufacturer must allow proceduremust allow procedure


►Christmas Treeing, Items for Christmas Treeing, Items for Consideration:Consideration: Weight of each pieceWeight of each piece Sling sizeSling size Hook size and typeHook size and type Shackle SizeShackle Size

►Hoisting using Hoisting using bundle straps or bundle straps or bands is prohibitedbands is prohibited

Structural AssemblyStructural Assembly

►8 floors maximum between erection 8 floors maximum between erection floor and uppermost permanent floorfloor and uppermost permanent floor

►Maximum 4 floors unfinished boltingMaximum 4 floors unfinished bolting►Fully decked or protected by nets Fully decked or protected by nets

within two floors or 30 ft under within two floors or 30 ft under erection workerection work

►Metal deck openings turned downMetal deck openings turned down►Holes cut immediately prior to fillingHoles cut immediately prior to filling


►Walking surface must be installed Walking surface must be installed before shear connectorsbefore shear connectors

►Decking must be laid tight and Decking must be laid tight and secured immediatelysecured immediately

►Placement must be for full structural Placement must be for full structural supportsupport

►Derrick floors must be fully planked Derrick floors must be fully planked and boltedand bolted


► CoversCovers For vehicular traffic – 2 times the maximum For vehicular traffic – 2 times the maximum

axle load of the largest vehicleaxle load of the largest vehicle Foot traffic – 2 times the weight of the Foot traffic – 2 times the weight of the

expected loadexpected load Secured to prevent displacementSecured to prevent displacement Marked “HOLE” or “COVER” or color codedMarked “HOLE” or “COVER” or color coded Decking holes around columns must be Decking holes around columns must be

protectedprotected Domes or fixtures are not rated covers Domes or fixtures are not rated covers

unless built for such useunless built for such use


► Structure must be Structure must be plumbed to insure plumbed to insure stabilitystability

► Plum cables must be Plum cables must be installed before installed before constructions are constructions are placed on structureplaced on structure

► Loose items must be Loose items must be secured at all timessecured at all times

► Decking joists must Decking joists must landed in accordance landed in accordance with 757(e)(4)with 757(e)(4)

Column AnchorageColumn Anchorage

► 4 anchor bolts per column4 anchor bolts per column► Column must withstand 300 lb eccentric Column must withstand 300 lb eccentric

gravity load from 18” at column topgravity load from 18” at column top► Must be set on floors, plates, or packs Must be set on floors, plates, or packs

adequate to transfer construction loadsadequate to transfer construction loads► Competent Person evaluates bracing Competent Person evaluates bracing

requirementsrequirements► Structural Engineer must approve any repairs Structural Engineer must approve any repairs

or modifications to the anchor rodsor modifications to the anchor rods► Controlling Contractor must provide written Controlling Contractor must provide written

notification for any repair or modification to notification for any repair or modification to the columnthe column

Beams & ColumnsBeams & Columns

►2 bolts per connection prior to releasing 2 bolts per connection prior to releasing the hoist linethe hoist line

►Solid web members for diagonal Solid web members for diagonal bracing one bolt wrench tight minimumbracing one bolt wrench tight minimum

►One bolt must remain connected for One bolt must remain connected for double connections unless seat or double connections unless seat or equivalent is usedequivalent is used

►Seats for double connections shall be Seats for double connections shall be designed for the load during the double designed for the load during the double connection processconnection process

Beams & ColumnsBeams & Columns► Double Connection Requirements:Double Connection Requirements:

The connector has to back out the boltsThe connector has to back out the bolts Beam must be held in place with a spud wrenchBeam must be held in place with a spud wrench When second beam, arrives, align and hold with When second beam, arrives, align and hold with

spud wrenchspud wrench Push bolts back through first beam into second Push bolts back through first beam into second

beam and securebeam and secure► Double Connections at columns and beam Double Connections at columns and beam

webs over a columnwebs over a column At least one bolt or similar connection device At least one bolt or similar connection device

must be present (i.e. beam seat)must be present (i.e. beam seat)► Perimeter columns must extend 48” for Perimeter columns must extend 48” for

safety cable installation and must have safety cable installation and must have holes for cables at either 42” or 45”holes for cables at either 42” or 45”

JoistsJoists► Joists field bolted at Joists field bolted at

columns unless columns columns unless columns are framed in at least two are framed in at least two directionsdirections

► Vertical stabilizer plates Vertical stabilizer plates provided on each column provided on each column for joistsfor joists

► Hoisting cables shall not Hoisting cables shall not be released until joist is be released until joist is boltedbolted

► Vertical stabilizer plates Vertical stabilizer plates are required for each are required for each column of steel joistscolumn of steel joists

JoistsJoists

► Joist placement not at a columnJoist placement not at a column►Alternate means used to stabilize joists on Alternate means used to stabilize joists on

both sides of the columnboth sides of the column►Erection procedure designed by Qualified Erection procedure designed by Qualified

PersonPerson►Procedure incorporates joist stability, shop Procedure incorporates joist stability, shop

installed connections, and erection installed connections, and erection drawingsdrawings

►Hoisting cables shall not be released until Hoisting cables shall not be released until both ends are bolted and joist is stabilizedboth ends are bolted and joist is stabilized

Engineered Metal BuildingsEngineered Metal Buildings

►Rigid frames shall have 50% of their Rigid frames shall have 50% of their bolts or the number specified by the bolts or the number specified by the manufacturer installed and tightened manufacturer installed and tightened on both sides of the web adjacent to on both sides of the web adjacent to each flange before hoisting equipment each flange before hoisting equipment is releasedis released

►Construction loads shall not be placed Construction loads shall not be placed on any structural steel framework on any structural steel framework unless such framework is safely unless such framework is safely bolted, welded, or otherwise securedbolted, welded, or otherwise secured

Fall ProtectionFall Protection►Fall protection is Fall protection is

required at required at heights greater heights greater than 2 stories or than 2 stories or 30’ (Includes 30’ (Includes connectors and connectors and deckers)deckers)

►Protection is Protection is required between required between 15’ and 30’15’ and 30’

Fall ProtectionFall Protection► Controlled Decking Controlled Decking

ZoneZone Allows connectors to work Allows connectors to work

without conventional fall without conventional fall protectionprotection

May be established in an May be established in an area within the structure area within the structure over 15’ and up to 30’ above over 15’ and up to 30’ above a lower levela lower level

CDZ shall not be more than CDZ shall not be more than 90’ wide and 90’ deep from 90’ wide and 90’ deep from any leading edgeany leading edge

CDZ perimeter must be CDZ perimeter must be designated by warning linesdesignated by warning lines

Only trained employees can Only trained employees can enter the CDZenter the CDZ

steel erection

Documents