TILT-UP CONSTRUCTION - Brock White
TILT-UP CONSTRUCTION - Brock White TILT-UP CONSTRUCTION - Brock White
Panel ErectionInformationPanel ErectionInformationBoom PositioningTo safely erect a tilt-up panel, the crane boom mustbe directly over the panel’s center of lift. If the boom is notcorrectly positioned the inserts have different loads thancalculated in the erection analysis and the stresses in thepanel will be greater than anticipated. If insert loads or panelstresses become too large, an insert will pull out of the concreteor the panel will crack.When the crane boom is set toward the bottom of thepanel (under-booming) as the panel is erected, the panelwill slide backwards. When the crane boom is set toward thetop of the panel (over-booming) as the panel is erected, thepanel will slide forward.When a panel slides due to excessive under-boomingor over-booming, it is possible for someone to be trappedbetween panels, between the panel and the crane, betweenpanel braces, etc.Plumbing Face-Lifted PanelsWhen a tilt-up panel is too tall to erect using edge lift insertsand the panel must hang as plumb as possible for setting,there are three standard methods available for use. Oneis the “plumbing block” method, the second is the “brace andre-rig” method and the third is the “transfer” method.Plumbing Block MethodAfter erecting the panel to a vertical position, set thepanel on the ground and tip the panel so that the panel’s topedge rests against the rigging cables. Next, plumbing blockssupplied by others are placed around the cables and hookedover the top of the panel as shown below. The tendency ofthe cables to pull away from the panel will keep the plumbingblocks tight as the crane lifts the panel into position.Correct BoomingOverBoomingUnderBoomingIncorrect BoomingPanels will SlidePlumbing BlockCorrect BoomingUp Face of PanelOverBoomingUnderBoomingIncorrect BoomingPanels will SlideNOTE: Rigging may vary from that shown.WARNINGIncorrect placement of the crane boom can causeover-stressing of the panel/inserts and possible slidingof the panel. Failure to correctly position the craneboom can cause property damage, serious injury ordeathPlumbing blocksmust be fabricated foreach particular situationdepending on the panelthickness and the numberand diameter of cables.The plumbing blocksmust fit securely over thethickness of the panel anthe cables as shown.Down Face of Panel24 02-09
Panel ErectionInformationBrace and Re-rig MethodTransfer MethodThe “brace and re-rig” method is used when a cranedoes not have a second line that can safely carry therequired panel weight. This method requires you to:1) Erect the panel using the face lift inserts only.2) Brace the panel as required.3) Release the face lift hardware and rigging.4) Reinstall the proper hardware and rigging onto the finalset inserts.5) With the rigging tight, remove the bracing.The “transfer” method is generally used when the cranehas a second line that can safely carry the total panel weight.Using the transfer method requires:1 That the panels be lifted to the vertical position using theface lift inserts and rigging only.2) Keeping the rigging attached to the final set inserts slackwith the final set hardware properly aligned with thecables.3) After the panel is vertical and completely in the air,transfer the total panel load to the crane line and riggingattached to the final set inserts.Panel ErectionInformation6) Lift and set the panel into its final position.7) Brace the panel as detailed.8) Remove the final set lifting hardware and rigging.4) The panel is then set into its final position.5) Brace the panel as detailed.6) Release both the face lift and final set lifting hardwareand rigging.1) Lift PanelWith FaceLift Inserts2) Brace Panel3) ReleaseHardware1) Lift Panel UsingFace Inserts2) Edge Lift RiggingRemains Slack3) Transferring LoadTo Edge Lift Inserts4) Re-Rig Panel5) Remove Bracing6) Lift and Set Panel7) Set and Brace8) Remove Hardware4) Load Transferedand Panel Set InPlace5) Brace As Required6) Release HardwareWARNINGFailure to properly brace panels before releasing liftinghardware may cause failures resulting in injury or death.NOTE: Rigging may vary from that shown.02-0925
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- Page 43 and 44: Ground Release IISystemP-52 Swift L
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Panel ErectionInformationBrace and Re-rig MethodTransfer MethodThe “brace and re-rig” method is used when a cranedoes not have a second line that can safely carry therequired panel weight. This method requires you to:1) Erect the panel using the face lift inserts only.2) Brace the panel as required.3) Release the face lift hardware and rigging.4) Reinstall the proper hardware and rigging onto the finalset inserts.5) With the rigging tight, remove the bracing.The “transfer” method is generally used when the cranehas a second line that can safely carry the total panel weight.Using the transfer method requires:1 That the panels be lifted to the vertical position using theface lift inserts and rigging only.2) Keeping the rigging attached to the final set inserts slackwith the final set hardware properly aligned with thecables.3) After the panel is vertical and completely in the air,transfer the total panel load to the crane line and riggingattached to the final set inserts.Panel ErectionInformation6) Lift and set the panel into its final position.7) Brace the panel as detailed.8) Remove the final set lifting hardware and rigging.4) The panel is then set into its final position.5) Brace the panel as detailed.6) Release both the face lift and final set lifting hardwareand rigging.1) Lift PanelWith FaceLift Inserts2) Brace Panel3) ReleaseHardware1) Lift Panel UsingFace Inserts2) Edge Lift RiggingRemains Slack3) Transferring LoadTo Edge Lift Inserts4) Re-Rig Panel5) Remove Bracing6) Lift and Set Panel7) Set and Brace8) Remove Hardware4) Load Transferedand Panel Set InPlace5) Brace As Required6) Release HardwareWARNINGFailure to properly brace panels before releasing liftinghardware may cause failures resulting in injury or death.NOTE: Rigging may vary from that shown.02-0925
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