Design and verification of lifting lugs


The spreadsheet verifies some configurations of lifting lugs and padeyes.

 

Different worksheets are reported for a complete verification of common configurations. 

 

Lifting Lug subjected to a vertical load

The verification is performed considering the reference "Design and Construction of Lifting Beams"  David T. Ricker, PE, AISC Engineering Journal, Fourth Quarter/1991 and its updating to 2005 AISC Manual of Steel Construction (click here to download it). 

 

Many sections are reported with the dimensioning verifications:


  • Geometry definition and requirements check in compliance with the prescriptions reported in the reference document
  • Materials definition
  • Verification of the failure modes of the lug to:
    • Tensile Rupture of Lug,
    • Bearing Capacity of Hole,
    • Shear Yielding to Edge of Plate,
    • Tension Tear Out to Edge of Plate
  • Section verification of the lifting lug's plate
  • Welding verification between the lug and the bottom plate, using the norm Eurocode 1993-1-8:2005 and NTC 2008.
    Two dimensioning welding cases and configurations:
    • fillet weld
    • full penetration weld

Useful graphical views of the lug and welding are foreseen to better define the geometry and the dimensioning parameters. 

Metric (S.I.) or English (U.K.) Units System can be selected for the calculation.

 

Lifting Lug subjected to a load with given slope

Lug with an applied force having an assigned sloped angle and eccentricity with respect to the hole.

The verifications of the previous case are repeated with the additional verifications of the connected bottom section to the bending effect produced by the eccentricity of the force. 

Also for this case two welding types are included: fillet weld and full penetration weld.

Metric (S.I.) or English (U.K.) Units System can be selected for the calculation.

 


Design of a lifting lug with overlapping plate joint subjected to a sloped force

The previous lug is verified considering the case with the main plate overlapping the bottom structure with a welding line all around its perimeter.

Forces in the plane of the pad and transversal to it are considered. The verification of the failure modes and the plate section are included.

The front and lateral welds are verified considering the EN 1993-1-8.

Metric (S.I.) or English (U.K.) Units System can be selected for the calculation.

 


Design of a lifting padeye with stiffeners

The worksheet verifies a lifting padeye provided with stiffening brackets and cheek plate loaded with a sloped force. The verification takes into account the guidelines in "Rules for Classification and Construction Industrial Services IV-6-4" Germanischer Lloyd Aktiengesellschaft  Edition 2007 (click here to download it).

 

Many sections are reported with the dimensioning verifications:


  • Geometry definition and dimensional requirement checks. Two stiffening brackets can be selected. The main section parameters (shear sections, bending modulus, inertia moments…) are calculated for the stress analysis
  • Materials definition
  • Evaluation of the safety factors for lifting equipment
  • Forces in the plane of the pad and transversal to it
  • Calculus and verification of the stresses on the loaded sections due to tension, shear, bending and torsion moments
  • Verification of the failure modes of the lug hole to:
    • Tensile Rupture of Lug,
    • Bearing Capacity of the Hole,
    • Shear Yielding to Edge of Plate,
    • Tension Tear Out to Edge of Plate
  • Verification of fillet welds of the composed elements:
    • main plate,
    • stiffening brackets (vertical and bottom sections)
    • cheek plate

Useful graphical views of the geometry of the padeye are foreseen for a better definition of the configuration and dimensioning parameters. 

Metric (S.I.) or English (U.K.) Units System can be selected for the calculation.

 

See video PART 1.   (version 1.0)

See video PART 2.   (version 2.0)

The Part 2 contains the new verification worksheets included in the version 2.0 (lifting padeyes with stiffening brackets and lugs with overlapping plate joint).

 

 

The spreadsheet you will purchase and receive is an excel file compiled in a “.EXE” application file format identified by our icon image. See the Activation/Support page for more details.


Trial version


You can download a trial version of this spreadsheet for evaluation purpose. Click below to download the zipped file.

The trial version has a limited number of runs from its first activation on your computer, after that it stops to work and a new activation key is needed or the full version should be purchased.

To activate it, unzip the downloaded file, run the application and insert the Activation Key you will find in the .TXT file.

After key validation, the runs count starts on your machine and a window is displayed at each launch reminding you the remained launches. 

To purchase the full version go back to this webpage or use the “Purchase Online” button on the window.

 

The trial spreadsheet is fully working with the following limitations:

  • A pin diameter of 20 mm (~ 0,79 in) is fixed and it cannot be modified
  • It is not possible to open/save external spreadsheets when it runs
  • Excel toolbar is not visible
  • Print function is disable
  • Copy and paste functions are disable
  • Save function is disable

 What you will find in the full version

  • No expiration date
  • No limit for pin diameter
  • It is possible to open/save external spreadsheets when it runs
  • Excel toolbar is visible
  • Print function is available
  • Save function is available
  • Copy and paste functions are available

For support and questions contact us.

 

For Excel 32 bit format use the 32 bit file, while for Excel 64 bit format use the 64 bit file.

 

Download
Lifting Lug Design v 3.1 (32 bit) - Trial version
Lifting Lug Design v 3.1 (32 bit)-Trial
Compressed Archive in ZIP Format 6.8 MB
Download
Lifting Lug Design v 3.1 (64 bit) - Trial version
Lifting Lug Design v 3.1 (64 bit)-Trial
Compressed Archive in ZIP Format 8.1 MB


Spreadsheet versions list:

 

Version 3.2

Some text corrections have been introduced.

 

Version 3.1

Updated picture in sheet 2 with reference signs.

Minor improvements.

 

Version 3.0

Added English Unit System. Now it is possible to select the Metric (S.I.) or English (U.K.) Units System for the calculation. The input and output values will change as consequence.

Added User values for Beta and Gamma parameters in welding verifications.

Minor corrections and various improvements.

 

Version 2.1

New .EXE file format for the spreadsheet. When launching the .EXE file, Excel is started and the protected workbook is opened as if you had opened it the regular way. See Activation/Support page for more information.

 

Version 2.0:

Added verification worksheet of lifting padeyes with stiffening brackets.

Added verification worksheet of lugs with overlapping plate joint.

Minor corrections.

 

Version 1.0: new introduced file.

 

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