Lifting lug analysis simplified heres a simple sizing calculator for the most basic type of lifting lug. Delftship free ship design and calculation software. Having drawn and created a lifting lug,i now wish to prove its strength,adding a force of 49258 n to the inner pin hole with constraints around the lower edge i find that the safety factor is very low. Mounted at the side of the container in the upper holes. Quick design a new feature that speeds up the process of pressure vessel modeling. Post navigation design software that is used to design steel stacks, steel chimneys, flares, exhaust stacks, etc. Structural stability evaluation for lifting lug design of. Pressure vessel lifting and rigging analysis codeware. The internal design basis for the lifting lug can further be.
Spreadsheet part 2 for the design and verification of lifting lugs and padeyes. Design of a lifting lug with overlapping plate joint subjected to a sloped force. Lifting design cdms consulting engineers cdms have an extensive history of providing design services for lifting devices, lifted equipment, lifting studies, and crane and winch design. Mecalug is a lifting lug software package that is used to design lifting lugs as well as analyze loads acting on lifting lugs for a structure or piece of equipment.
Although the stability evaluation of the lifting lug has therefore been very important for safety, systematic design procedure of the lugs, which includes the structural analysis considering stability, has few reported. Oct 29, 2015 spreadsheet part 2 for the design and verification of lifting lugs and padeyes. In this demo some sections of the full version are available, in particular. Jul 17, 2016 heres a simple sizing calculator for the most basic type of lifting lug. Modern steel construction steel questions or comments to. Analysis of a lug is deceptively complex since there are. Variations in local sectional properties along the length of the vessel are considered. Recently a few crashes have been occurred in carrying engines due to breaking down the lugs. Lug and equipment design criteria great care must be taken when determining the acceptability of the lifting device and the equipment.
In this case, it means not only the uplift of the foundation with regarg to the groundwater level, but also the presence of the lifting or negative support forces. There is a spreadsheet for each of the individual failure modes. Calculus of bolt distances from edges dimensioning of the friction working mode of a bolted connection. Mecastack can be used to analyze self supported stacks free standing and guyed stacks guy wire supported. Asme bth1 explicitly addresses the issues involved. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users.
When lifting, clb lugs must always be attached to the lower container holes and are designed for use with a lifting beam. We have used this as the basis for our lug analysis spreadsheets. Combining material, geometry, and loads, lugcalc will walk you through the lug analysis steps required to estimate a lug joints static strength. Dynamic factor when the movement of the precast unit is performed by lifting gear, dynamic forces that depend on the lifting gear used, appear.
Working to an international quality management standard iso 90012015 we are able to offer our services to the highest level of quality control that is. Check it out, and as always you can download this, and many other excel tools at. With the literature library app on your iphone or ipad, you can now. Lifting lug design v2 xls mes no audio spreadsheet part 2 for the design and verification of lifting lugs and padeyes. Machine design strength of welds design of lifting equipment. For clarification, the lug is part of a safety device and the force. When activated with lift lugs, the lift points are taken. Division ii many companies use the alternative rules of. Mecalug is a lifting lug software package that is used to design lifting lugs as. Rigging analysis is considered in the vessel design. The codeware rigging analysis can be used with or without the lift lug option. Several different styles of lifting lug are offered giving the user multiple options in selecting an appropriate lifting lug.
Bth1 has some discussion on factors of safety fos and they go as high as 5 for parts which are used in the lifting process many times, over the years, such as shackles, slings, chains, etc. In my experience, accounting for the safety factors for lifting lug design using the aisc specification has been done in a much more ad hoc fashion. Several different styles of lifting lug are offered giving the user multiple options in selecting an appropriate lift. Select a metric shackle from the lookup table based on the force on the lug or click the shackle button to enter your own shackle and lug data. The file is a demo version of the spreadsheet dimensioning of bolts v 2. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. In this analysis the pressure vessel was analyzed for lifting loads at various angles as the vessel is installed. The main concern was the skirt, tailing lug and trunnions. This program can be used to design or check the design of pipe spreader bars fabricated from 4, 6, 8 and 10 diameter pipe.
Heat exchanger perform asme uhx and tema calculations and transfers these designs to your estimating and drafting departments. This suprises me for when doing a hand calc i have a safety factor of over 2. Compress and inspect include a lift lug design option. The design of lifting attachments for the erection of. Designing lifting lugs and define original dimensions. In addition, the software also performs a bending analysis of the stack to aid with the stack lifting design. The author developed a software to perform the design and management of the lifting operations using a virtual reality environment and the state of the art in heavy lifting techniques.
Post navigation download it many sections are reported with the dimensioning verifications. Design and verification of lifting lugs mec engineering. Lifting lug design spreadsheet calculator engineers edge. We certify custom lifting equipment including lifting lugs and pad eyes. Check it out, and as always you can download this, and many. Lifting lug engineering software lifting lug engineering software recognizing the showing off ways to get this books lifting lug engineering software is additionally useful. It also provides guidance related to impact and fatigue loadings more directly related to items such as lugs. Lugcalc is a tool for lug analysis theory and estimating the static structural strength of pinned lug joints used in mechanical designs. Ricker, originally published in american institute of steel construction aisc design.
The design criteria and limitations that are used for the lifting device and equipment are not the same. Utility for lineral interpolation between values in a table. For the selection of specific fem software, it will be given in chapter. The verification is performed considering the reference design and construction of lifting beams david t. Its easier than ever to take simpson strongtie product information with you on the go. Lifting lug design mecalug software meca enterprises inc. The program will determine the ultimate strength of the lifting lug based on several checks and will apply the desired factor of safety to the strengths to attain allowable loads for the lifting lug. Online library lifting lug engineering software lifting lug engineering software 4. Ricker, pe, aisc engineering journal, fourth quarter1991 and its updating to 2005 aisc manual of steel construction click here to download it many sections are reported with the dimensioning verifications. This suprises me for when doing a hand calc i have a. Engineering excel spreadsheet downloads welding design and engineering pressure vessel design and engineering. It provides bending moment, shear stress and bending stress diagrams as well as tabulated values at main vessel locations. Pad eye lifting lug plate type lifting lug programs to design spreader bars. Foundation pro under the name of uplift limit state design.
Spreadsheet downloads floating head exchanger design spreadsheet aes type. Mecastack can be used to analyze self supported stacks free standing. Check it out, and as always you can download this, and many other excel. We offer advice on testing, maintenance schedules and inspection periods and provide guidance and design. When lifting and carrying precast elements, the lifting load has to be. 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. Mecastack is a 3d stack design software that is used to design steel stacks, steel chimneys, flares, exhaust stacks, etc. There are also several different configurations in the lifting lug software for different equipment and. You can download a trial version of this spreadsheet for evaluation purpose. Large pressure vessel lifting analysis predictive engineering. Lifting lug load capacity vs crack length calculation. The calculations are based on hip and valley design by mckibben and gray.
This calculator follows the air force method as documented in the stress analysis manual of the air force flight dynamics laboratory fdl. Liftinglug calculates the loads on a lifting lug connected to a piece of equipment or steel baseframe and verifies that the particular metallurgy, the design codes, and the dimensions are fit for the design loads. The lug analysis tool allows for analysis of lifting lugs under axial, transverse, or oblique loading. Heres a simple sizing calculator for the most basic type of lifting lug. Lifting lug analysis per aisc th edition asd and asme bth12008. Designevalution of overhead lifting lugs page 2 pw2 16. See the instructions within the documentation for more details on performing this analysis. The aim of this paper is to describe the main features of the system.
Steel stack design mecastack software meca enterprises inc. Lifting analysis using compress software what use is a highly engineered piece. Mecalug aids in the design and analysis of lifting lugs and trunnions per asme. Easy installation and removal, simply insert and turn. Lifting and transportation is a critical aspect with structures of this size. The lug analysis calculator allows for analysis of lifting lugs under axial, transverse, or oblique loading. Design calculations for lifting lug welded onto equipment, like pressure vessels etc. In this case, as the lift angle increases so does the force on the lug. The user can enter a desired factor of safety most applications, f. Lifting lug design free download as excel spreadsheet. Lifting lug design ultimate tensile strength strength of. Lifting lug design calculation tl rl d k tl htl hp r hc wp b a tp lp weight of vessel, we 1. A software for design and management of lifting operations for shipbuilding and offshore construction leonardo roncetti, structural engineer techcon engenharia e consultoria avenida nossa senhora da penha, 699 b, sl. Productivity software packages like compress exist to increase productivity and save engineering hours.
Fea analysis can help determine how the structure will behave. Force diagram of intermediate shaft bearing aft jackup load test empty. You have remained in right site to begin getting this info. Lifting lug design spreadsheet calculator, design calculations for lifting lug welded onto equipment, like. A software for design and management of lifting operations. Material of lug yield stress width of lifting lug width of lifting lug pad length. This entry was posted in lug analysis and tagged aerospace design, download, engineering, factor of safety, lifting, lifting lug, lug analysis, lug joint, lugcalc, margin of safety, news, pin joint, release, stress analysis, structural on august 26, 2016 by team lugcalc. Lifting lug design ultimate tensile strength strength. Investigation of the application of adhesively bonded lifting lugs in.
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