If its obvious that a lug hole has worn from round to oval by more than 10% - then dont use the lug. Note that pure axial loading and pure transverse loading are special cases of oblique loading where only one load component is non-zero. ASME BTH-1 specifies design calculations for different types of loading of a lifting device including tension, compression, flexure, shear and combined loading of beams. This is the documentation page for the Bolted Flange Design module. The spreadsheet has the following input/features: 1.) AISC Lifting Lug - ExcelCalcs The bearing widths for the male and female lugs are the widths over which the pin loads are supported: Because the bearing widths are smaller than the full lug thicknesses, the moment arm is reduced and the pin ultimate bending load is increased: In the balanced design, the ultimate joint load is equal to the pin ultimate bending load: Note that the same joint strength would be achieved if the width of each female lug was reduced to b1 = and the width of the male lug reduced to 2b2 =. Ab is an effective area that is calculated as: where R is the edge distance, Dh is the hole diameter, be is the net width, and t is the lug thickness. AS4991 is often the best fit. Lifting Beams" David T. Ricker, PE, AISC Engineering Journal, Fourth Quarter/1991 and its updating to 2005 AISC Manual of Steel Construction (click, Section verification of thelifting lug's plate. Aktiengesellschaft Edition 2007 (click, Geometry definition and dimensional requirement checks. The bolt is captive with a snap ring. Thank you for this submission mukeshkumarj however I suspect that the author of the calculation is Joel Berg. subjected to a load with given slop, Design of a lifting lug with overlapping plate endstream endobj As an engineer, you must have heard the term fillet welding. DXF format files can not only be read by commercial software like AutoCAD but also by several Free/Open Source software like: Hole clearance : oversize hole up to 150%, By continuing to browse our site, you accept the use of.
