Lifting Lug Design Handbook
A lug, also known as a lifting lug or a padeye, is essentially a plate with a hole in it where the hole is sized to fit a clevis pin. Lugs are used in combination with clevis pins to transmit load between different mechanical components. Common applications where lugs are used include.
The spreadsheet verifies some configurations of lifting lugs and padeyes.
- Width of Lug (W) Diameter of Pin ( Dp) Effective width of plate Tensile Load capacity (60 + 0.2 T) By Fracture Theory Temperature (T) oC Length of Crack ( a ) (mm) Fracture Toughness ( k1c) Fracture Theory Yeild Theory Effective width of Plate (mm) K1c 1 Lifting Lug Load Capacity Vs Crack length Calculation K1c We =R- Dh/2 Fd.
- 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.
- MIL-STD-8591 ii FOREWORD 1. This standard is approved for use by all Departments and Agencies of the Department of Defense (DoD). Military specification, MIL-A-8591, Airborne Stores, Suspension Equipment and Aircraft.
- Anchor Bolt Design Guide EXAMPLE 3 - Shear Lug Plate Section Design Design a shear lug plate for a 14-in. Square base plate, subject to a factored axial dead load of 22.5 kips, factored live load of 65 kips, and a factored shear load of 40 kips. The base plate and shear lug have f ya = 36 ksi and f c' = 3 ksi. The contact plane between the.
- Design/Evalution of Overhead Lifting Lugs Page 7 1. As discussed in Reference 1, using a 'factor' of 1.8 on AISC allowables results in a factor of safety of 5 for A36 steel. This is in line with ASME B30.20 which requires a design factor of 3 on yield strength and ANSI N14.6 which requires a design factor of 3 on yield strength and 5 on ultimate.
- FABRICATED LIFTING PRODUCT HANDBOOK. PAGE 2 1300 722 999 & L v P W µ, v l Disclaimer. The lifting lug was welded to the shell of the stack using a reinforcing plate to minimize stresses imposed on the stack’s shell. Teck provided detailed design and FEA analysis for lifting.
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 newverification 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.
Download sims 4 dlc mac. 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.
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.
Lifting Lug Design Standard
Minor corrections and various improvements.
Version 2.1: Nvidia n1996 video card driver.
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.
Please for any technical questions use the specific email contact form.
Answer to henk: you're probably referring to the message that 32bit is required. It refers to the version of Excel and not of the file. To run the 64 bit file you need the Excel 64 bit and probably you have the 32 bit. So try with the 32 bit version of the file.
Please for any other technical questions use the dedicated email contact form.
Answer to Alan: First of all don't worry all our files are safe and in general there is no problem with antivirus softwares. Anyway because the .EXE applications are not provided with certified digital signature (not yet), there is the possibility that an antivirus software or Windows firewall generates a 'false positive', showing a warning message (or in worst case blocking the file). In this case enter in the preferences of your antivirus software and add the .EXE in its exclusion files list or temporary dactivate the Antivirs. In this way the antivirus allows its execution without problems.
Lifting Lug Design Handbook Template
Answer to Chris Nay: The key is in the text file you've downloaded. It activates the file for a limited use.