![]() There are several common methods of analyzing a lug: Out of plane buckling ("dishing") - (not shown in the figure).Hoop tension failure / fracture on single plane.The numbers correspond with the labeled sections from the above figure: The failure modes for the lug are listed below. Simplified analysis - This method is based on first principles and involves making simplifying assumptions about the nature of the failure and calculating factors of safety. See the instructions within the documentation for more details on performing this analysis. #Lift lug design manualThis calculator follows the Air Force Method as documented in the Stress Analysis Manual of the Air Force Flight Dynamics Laboratory (FDL). This has the advantage of being relatively easy, but it only gives an approximate determination of the adequacy of the lug.Īir Force Method - This method considers most of the failure modes above, and it uses empirical curves to determine more accurate allowable loads. The Lug Analysis calculator allows for analysis of lifting lugs under axial, transverse, or oblique loading. This method allows for lugs under axial loading, transverse loading, or oblique loading. This method also accounts for the interaction between the lug and the clevis pin.ĪSME BTH - This method considers most of the failure modes above, and it uses simplified equations with correction factors based on empirical data to determine more accurate allowable loads. All calculation, dimension, material specification and welding requirement must be clearly presented in the drawing.ll Approved Lifting Point should be subject to inspection and NDT by competent person. It does not store any personal data.This method is simpler than the Air Force Method, but it only allows for lugs under axial loading and does not account for the interaction between the lug and the clevis pin.Īll of these methods are described in the following sections. Lift lug design manual The NDT report should be submitted to MSI for filing. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. This cookie is set by GDPR Cookie Consent plugin. A lifting lug is a lifting and handling accessory generally welded to a part to hoist it with a crane / overhead crane hook. The cookies is used to store the user consent for the cookies in the category "Necessary". Lifting lugs are in the construction of storage tanks and multi-grade dispensers. The lugs have an opening in the center to which cables can be attached for lifting. The NDT report should be submitted to MSI for filing. ![]() All Approved Lifting Point should be subject to inspection and NDT by competent person. ![]() All calculation, dimension, material specification and welding requirement must be clearly presented in the drawing. ![]() This cookie is set by GDPR Cookie Consent plugin. Lifting Lug Design admin Octo77 Views 0 Save 1 Small projections attached to, or built into, heavy components. All Lifting Point design must be approved by MSI before beginning of construction. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. #Lift lug design isoNecessary cookies are absolutely essential for the website to function properly. Designed to Connect Lift Slings to Side Apertures on ISO 668 Container Bottom Corner Fittings (ISO 1161). ![]()
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