At Bishop Lifting, our Liftmax brand of lifting devices are specialty fabricated below-the-hook lifting devices such as spreader bars , lifting beams , material baskets, and other lifters that aid in a number of lifting applications. . Lifting beams and spreader bars have become an integral part of complex crane, rigging, and lifting activities. Also the named cells lug_Fu and Lug_FY appear to be incorrectly used giving #VALUE errors on Sheet 'Lift Beam Analysis'. by Skype or
Do you have an idea for a topic that you would like us to cover? Home Depot Jobs In Casa Grande Az| ITIs Learning Strategy Assessment is designed to help our customers identify their learning and development priorities. Square tubing design with adjustment pins. Depending on your jurisdiction, there are design considerations, guidelines, and regulations. An Overview of ASME BTH-1 (spreader bars and lifting beams) When planning to design lifting beams (or any other below-the-hook lifting devices), there are many aspects that must be considered beyond finding materials that meets a few basic engineering calculations. Posted on November 6, 2021 by Sandra. ITI Rigging Applications courses cover the full gamut of skill and experience levels with options available for true neophytes to seasoned veterans and everyone in-between. female duck anatomy diagram; combi food truck for sale; best restaurants near hyde park london; map of oakland county, michigan We use cookies to ensure that we give you the best experience on our website. Capacity Battery Lifting Beam Spreader Bar MTC HB-6000-PL. 50 Important Crane & Rigging Resources for Your Library.75 Hours | Zack Parnell, ITI presents 50 resources to include in your library for cranes and rigging. By pveng February 23rd, 2017 Uncategorized. Design. Beam Calculator Free Online Shear and Moment Diagrams. It is the fundamental concept of the spreader beam, a mechanical structure that separates two legs of a sling, grommet or chain, all of which could only workat a straight tension and converts them into two suspended elements separated by a certain length and they spread the load between them. It's free to sign up and bid on jobs. It shows how there is a reduction in lifting capacity in longer beams due to the instability from lateral torsional buckling. Spreadsheet Calculation for Design of Steel-I Section to Guide To Lifting Beams And Spreader Beams inside spreader bar Steel Beam Design Spreadsheet: pin. They have two attachment points at both ends of the top side of the bar. Thanks for sharing such helpful posts! ASME BTH-1 provides detailed information on the design criteria of below the hook lifting devices. ITI is proud to team with partner organizations to support our custom's mission for safe and efficient material handling operations. Weve corrected the same. Designing and Manufacturing Modular Spreader Beam Systems for a Cost-Effective, Safe Lift. So, your lifting tasks become much safer and easier. ITI conducts a variety of crane training courses that support end-users from operators to inspectors, and assembly/disassembly directors on all crane types including mobile (all variations), overhead, articulating boom, pedestal, and tower. Personnel qualification is available. Now check your email to confirm your subscription. Geometry of Lifting at the each end of the HOLLOW PIPE Spreader Beam, Solved using the equations of Static Equillibrium. Square or rectangular frame, typically made from square tube or I-beam. Fillmore Parking Garage| Spreader bars for lifting and rigging consist of a beam with two or more lifting lugs on the bottom that attach to lifting slings that attach to the load. 9.46K subscribers While spreader beams and lifting beams are the most popular types of below-the-hook lifting devices, there is a lot of confusion about the differences between the two. ITI in-person training and virtual live instruction offers students the opportunity for hands-on learning in real world situations, using instructors with 20+ years of relevant industry experience, and advanced learning technology to meet our customers' ever-changing training needs. Modular beam configuration with interchangeable components. Calculations for fatigue are also specified in the standard, dependent on the service class of the bar and bar geometry. Fundamentals of Rigging Engineeringis ideal for lift planners, rigging engineers, and other key personnel who plan and execute crane and rigging activities. ITIs online courses are taught by the same subject matter experts that conduct our in-person training. A spreader beam absorbs the compressive force to protect the load being lifted. load over live facility(75% of chart) angle pai - kuparuk eff. all. 5. Check for axial compressive stress : - Total Equipment weight be lifted = W = 286000 Kg Load at each end = W/2 = 143000 a = 60 Shock . Because of the forces acting spreader beams are highly efficient. Gantry Crane If you use simple beam calculations as has been mentioned the caster is the weakest link in a gantry crane Lifting . 1. beam calculator free online shear and moment diagrams. document.getElementById( "ak_js" ).setAttribute( "value", ( new Date() ).getTime() ); [email protected] hbspt.cta._relativeUrls=true;hbspt.cta.load(78935, '160b9bb8-ddde-4c01-8b52-10a26747345d', {"useNewLoader":"true","region":"na1"}); Lifting beams and spreader bars have become an integral part of complex crane, rigging, and lifting activities. d= = = 12.07 in. Our Crane & Rigging Subject Matter Experts (SMEs) can deliver any of our 35+ courses at your location. DESIGN FACTOR DESIGN FACTOR made up from Tilt & Yaw factor DO YOU INTEND TO USE A SPREADER BAR? The first step in developing a lifting device is to determine the lifting configuration, max lift capacity and max spread (width) that is desired. They can be found at our store. Qualification and Certification Exams through NCCCO are offered. lifting beams calculation tony tay academia edu. Train, assess, and qualify your crane operators more efficiently and authentically than ever. Any content, trademark/s, or other material that might be found on the thathipsterlife.com website that is not thathipsterlife.com property remains the copyright of its respective owner/s. The reason for this is crane capacity and required boom length required negates the use of additional shackles for normal spreader configuration. CUSTOM DESIGN & MANUFACTURING ENGINEERING. The spreader bar increases load stability by raising the suspension point away from the center of gravity. All loads to be lifted or moved must be assessed for weight, stability and rigging points. ASME B30.20 defines the safety requirements for below-the-hook lifting devices including marking, inspection, construction and operation, whereas ASME BTH-1 defines the design requirements for developing these lifting devices. Spreader bars are normally made out of pipe and have top and bottom lifting points on opposing ends. How do I access or download course materials? ITI endorses the national certification program offered by the National Commission for the Certification of Crane Operators (NCCCO) and provides training to prepare candidates for NCCCO written and practical exams. . Our engineering team is capable of designing and constructing for a customers special needs. Industry Associations and Certification Organizations, Full Virtual Instructor-Led Training Schedule, 10 Audit Points for Your Crane & Rigging Operations - An HSE Perspective, 50 Important Crane & Rigging Resources for Your Library, 4 Heavy Lift Challenges in Power Generation Environments. Need an optimized and cost effective design as this required to be used only for two shade structures. Note: According to ASME B30.20, proof testing is only a recommendation, not a requirement. Pipe and plate is considered as a homogenous section. / Malvaux > Non class > spreader beam design spreadsheet / 16.02.22 spreader beam design spreadsheet . - Before . An Overview of ASME BTH-1 (spreader bars and lifting beams) When planning to design lifting beams (or any other below-the-hook lifting devices), there are many aspects that must be considered . Though, because of many factors, structural design factors are benchmarked at different levels in design standards around the world. by mobile, EU +44 113 8152220
by mobile, (A) Design for Normal Stress (Direct Compressive Stress) **** Selecting the Section initially based on this ****, (B) Design for Elastic Stability - Transverse Buckling [1], ('C) DESIGN OF ATTACHMENTS - (a) Design of eye bracket for strength, (a-i) Design of eye bracket for tensile strength - FAILURE MODE - 1 (allowable tensile stress is governing), (a-ii) Design of eye bracket for bearing/crushing strength - FAILURE MODE -2 (80% of the yield stress is governing), (a-iii) Design of eye bracket for tearing strength - FAILURE MODE - 3 (50% of the yield stress is governing), (a-iv) Design of eye bracket for out-of plane buckling - FAILURE MODE - 4 (as per David T. Ricker [2]), (a-v) Design of shackle ring for shearing strength - FAILURE MODE - 5 (50% of the yield stress is governing), (b) Design of weld joint of the eye-bracket with the spreader beam for shear strength (50% of the allowable stress is governing), DESIGN OF ADJUSTABLE SPREADER LIFTING BEAM of Standard Profile "HEB Series", Geometry of Lifting at the each end of the HOLLOW PIPE Spreader Beam, Solved using the equations of Static Equillibrium, (A) STRENGTH DESIGN - Design for FLEXURAL Bending Stress **** Selecting the Section initially based on this ****, (B) STIFFNESS DESIGN - Design for DEFLECTION, (C) DESIGN OF ATTACHMENTS - (a) Design of adjustable (CG location variations) suspension bracket for strength, (a-i) Design of lugs on the bracket for tensile strength - FAILURE MODE - 1 (allowable tensile stress is governing), (a-ii) Design of lugs on the bracket for bearing/crushing strength - FAILURE MODE -2 (80% of the yield stress is governing), (a-iii) Design of lug on the bracket for tearing strength - FAILURE MODE - 3 (50% of the yield stress is governing), (a-iv) Design of lug on the bracket for out-of plane buckling - FAILURE MODE - 4 (as per David T. Ricker [1]), (a-v) Design of pin for shearing strength - FAILURE MODE - 5 (50% of the yield stress of the pin is governing), (b) Design of weld joint of the lug with other plates for shear strength (50% of allowable stress is governing), (c) Design of end plates of the adjustable bracket for tensile strength (allowable tensile stress is governing), (d) Design of weld joint for the bottom plate of the adjustable bracket for shear strength (50% of allowable tensile stress is governing), (D) DESIGN OF ATTACHMENTS - (a) Design of adjustable (Span variations) suspension bracket for strength, (d) Design of weld joint for the top plate of the adjustable bracket for shear strength (allowable tensile stress is governing), (E) DESIGN OF ATTACHMENTS - (a) Design of fixed suspension bracket for strength, "RIGGING CALCULATION For Inshore Lifting". If you continue to use this site we will assume that you are happy with it. sling tension calculations sling tension calculations (upper) weight and description of slings: (lower) weight and description of shackles: (all) weight of spreader bars: (upper . So tagline may be required. Additionally, the need often arises for engineers and designers to create a custom lifting device for a specific project. This efficient method of rigging redirects compression forces away from the load and in to the spreader bar. lifting equipment such as cranes. Spreader Bar Lifting Device Calculations and Design - ExcelCalcs helping you make and share engineering calculations. Spreader bar lifting device calculations and design pdf Spreader bar lifting device calculations and design excel. There can be some lateral-torsional buckling too if it is an I-beam spreader. These slings are connected to crane and other lifting machines. If we resolve the forces on the whole beam, we get the force diagram as above. Mold In Shower Wall|. Operator certification for the following crane and equipment types - Mobile, Overhead, Articulating Boom, Digger Derrick. Spreader Bar Lifting Device Calculations And Design To Lifting Beams And Spreaders Spreader Beam Design Spreheet Spreader Bar Lifting Device Calculations And Design Capacity Of A Spreader Beam Ox Heavy Lifting Equipment Two Point Hook Spreader Bar Lift Spreheet Boat Design Spreader Beam Design Spreheet A Review On Lifting Beams [] ASME B30.20 & BTH-1: Introduction to Below the Hook Design []. Lifting beams are universally applied gear used widely in various types of lifting operations, onshore and offshore. a) Let's input the required data into the Wood Beam Calculator: i) General: Change Beam ID from Joist to Beam (optional). Lifting the Design Beam and Spreadbar: 6 Quickies for Engineers maneuvering. The slings connect directly to lifting trunnions. (A) STRENGTH DESIGN - Design for FLEXURAL Bending Stress **** Selecting the Section initially based on this ****. According to BTH-1 calculations, the short beam can be loaded to full yield strength (accounting for safety factors), but as the beam length (or lifting spread) increases, the stress reaches an inflection point where the allowable bending stress starts to drop off. Content from GKS, Hydra-Slide, LGH, Verton, and more! Lifting beam - v - Lifting Spreader Lifting beams, Lifting frames and Lifting spreaders are a means of providing two or more lifting points from the hook of the lifting machine or crane spaced so as to match the position of the lifting points on the load. Search for jobs related to Spreader bar lifting device calculations and design or hire on the world's largest freelancing marketplace with 21m+ jobs. In cell 'Adjustable Cross Beam'!$E$5:$F$5 the cell formula contains a link to another file ='C:\Users\MHaise\Downloads\[189537383-Spreader-Beam-BLOCK-E (1).xls]Longitudinal Beam'!L44 I assume it is safe to break this link? Box 222 Branson MO 65616. Following are the loads which affect the spreader: The angles of the slings 1 & 2 (in figure 1) made with the vertical must be less than 45 degrees (16.3.4.2, DNVGL-ST-N001). Typically lifting beams do not have bracing to resist either of these movements (a single symmetric cantilever beam with no external bracing to stabilize the beam), therefore the lateral bracing spacing is defined as the distance between the outermost lift points of the lifting beam. lifting lug design spreadsheet kezar engineering. It's free to sign up and bid on jobs. Structural Reliability The "reliability" of a lifter is the probability of survival subject to the statistics of loading and strength based on the chosen design factor. The angles of the sling 1 & 2 (in figure 1) made with the horizontal must be less than 45 degree To learn more, visitriggingengineering.comor call Christina Lanham, ITI Manager of E-Learning at 800-727-6355. Refer attached sketch for a basic idea. A poster with the same detailed information as the Lineman Rigger Reference Card; load factors and weight distribution, block and fairlead loading, sling capacities (wire rope, polyester round, web, and chain G-8), rigging hardware capacities, calculating load weights (materials and liquids), dead-ending poles & towers, level span, conductor weights, hand signals, treated pole weights and an . Explicacin sencilla, prctica y de aplicacin directa. Some bending may be experienced as the forces F1x and F2x are acting at the hole of the pad-eye, which is offset from the centerline of the spreader by some distance. Excelente material. If you are looking for more information on BTH-1, feel free to contact us, or you can wait for future articles that will discuss applying BTH-1 to design of lifting beams and spreader bars in greater detail. 3. (1.0)Bolts and Threads (File Repository) Created on 30 December 2015 35. spreader bar design process a guide to designing . M MoreVision Limited 423 followers More information Spreader Bar Lifting Device Calculations and Design Mathematical Logic Lifting Devices Process Map Gantry Crane Crane Design Lift Design Safety Posters More information . After establishing the style and capacity required of the lifting beam, the Design Category and Service Class must be confirmed, according to ASME BTH-1. Videos, images, course catalogs, and more 10 Audit Points for Your Crane & Rigging Operations - An HSE Perspective2 Hours | Mike Parnell, ITI and Zack Parnell, ITI focus on 10 areas within cranes and rigging that you should audit. Therefore, we are looking at a beam that is lifted from the centre and loaded at the ends. When planning to design lifting beams (or any other below-the-hook lifting devices), there are many aspects that must be considered beyond finding materials that meets a few basic engineering calculations. Save my name, email, and website in this browser for the next time I comment. So we must dismiss this mod spreader beam calculation products amp suppliers. Engineered Lifting Technologies offers load testing for all products. Along with stress, buckling is also a critical factor in lifting beams that must be addressed in detail to ensure that the structure can handling the loads imposed on it. (Tons) Part No. Lifting beam vs Spreader beam. Let our engineering team help design your custom spreader bar. Spreader bar ends to be greased to reduce friction, sling angle for main slings 30 degrees (included angle 60 deg). The code is by ASME and called BTH-1-2014 B elow T he H ook lifting devices. Spreader Beam Design Calculation Xls. by Michael Harwood, PE, PMP Overview Lifting by crane is a basic construction operation that dates back to at least Sixth Century BC (ancient Greece for example) and the lifting operation itself dates back much further. engineering problems, lifting beam calculation download as excel spreadsheet xls pdf file pdf text file txt or read online lifting beam lifting beam 118784294 lifting beam deign staad 82187560 design calc 10t spreader beam spreader bar spreader bar calculation single hook with rectangle spreader beam or two hooks 1a , bridge crane for Ordinary Lift Plan Elements Once a lift has been planned and approved, the appropriate rigging equipment, Spreader beam design calculation xlsBy purchasing this spreadsheet you agree to the disclaimer and terms & conditions. Proof Testing If operating in the USA, OSHA's rigging equipment regulation (29 CFR 1926.251) requires a 125% proof test for "lifting accessories". darbury lifting lug operating document, 21721 redrock padeye evaluation 2015 09 23, www excelcalcs com aisc lifting lug, spreader bar lifting calculations lifting beam calculator, lifting lug calculation excel download, modern steel construction steel questions or comments to, program to design a plate type lifting lug v 03, a critical review The back crane is using the 3 spreader bars. . Lifting Lug Design Calculation Krabigoldenhillhotel Com. (C) DESIGN OF ATTACHMENTS - (a) Design of adjustable (CG location variations) suspension bracket for strength. The spreader beam is essentially taken out of the equation. Build skills and assess competency with immersive simulations for individuals working around construction sites and on overhead cranes. All Liftmax spreader bars come standard with stainless steel data plates with individual serial numbers and RFID tracking and are proof tested to 125%. Carpets By Sonia| Part 46 of Mine Safety and Health Administration (MSHA) regulations requires that new miners complete no less than 4 hours of training before they enter a mine site and that all miners take refresher training on an annual basis. If we resolve the forces on the whole beam, we get the force diagram as above. Design of steel column & runway beam. Lifting beams, on the other hand, are designed to take bending loads. All-Ways Rigging Gear provides both lifting beam and spreader beam options. Because they use two lifting points instead of one singular lifting point, the weight of the load is distributed evenly across the beam. by Team TheNavalArch | Oct 27, 2020 | Lifting Operations, Marine Operations, Maritime Industry. The design category and service class establish the requirements for safety factor for strength and fatigue that will be used in the remainder of the design calculations for the lifting device. Paint Over Bathroom Tile| Spreader beams are some of the most popular below the hook lifting devices in the material handling industry. The Dynamic Hook Load (DHL) is determined for this and using a simple mathematical formulation, the sling loads are determined. After completing the assessment, a short summary report is complied to help identify strengths, weaknesses, and everything in-between. One-time vertical engineered lifts. ), fabrications, and other calculations and design, lifting beam calculation scribd, structural beam deflection amp stress formula engineering, design evaluation of overhead lifting lugs pdhonline com, b the hook equipment spreader beams, guide to lifting beams and lifting spreaders, spreader bar lifting device calculations and design, simple cantilever lifting beam design 15. do not lift outside the crane capacity chart. Spreader beam design calculation xls Spreader beam design calculation xls. Prem Holdings Spreader Bars are suitable where headroom does not have to be at a minimum. Both types of devices are used to keep the lifting slings below the device at or near a 90 angle (perpendicular to the horizon). Custom-built below-the-hook devices are very common. Small Batch Cosmetic Manufacturing Equipment Uk, Your figure is show angle made with vertical. The panel weight to be lifted by the beam equals the =25.1 =303 maximum precast panel weight of 6 tons plus an estimated additional 2 tons for dunnage and chokers. Together the design category and the service class define the design requirements of the beam related to material strength and fatigue. We can see that the vertical downward forces of Fv1 and Fv2 are balanced by the components F1y and F2y, while F1x and F2x are the compressive forces on the spreader. * Spread (Ft.) Bail: Adj. Block weight = 11,880 lbs. Save my name, email, and website in this browser for the next time I comment. Along with stress, buckling is also a critical factor in lifting beams that must be addressed in detail to ensure that the . They understand the tasks and issue you face everyday and teach the skills you need to succeed. It is NOT intended to superceed any equipment manufacturers instructions, plant procedures, or regulatory requirements. Calculating the Weight of a Load. Lifting beams and lifting bars have become an integral part of the complex crane, rigging, and lifting activity. Refer to the Manufacturer's Specifications or Catalog Data. Whether you are new to crane and rigging or a seasoned veteran, we have online courses to support your training need. LIFTCALC is an EXCEL spreadsheet that was created to assist individuals that are involved with planning maintenance activities that will require rigging and lifting of equipment. The stiffer the arms, the less bend you need. How do I retrieve it? Have a custom project? Decorate An Office On A Low Budget| Spreader beams are some of the most popular below the hook lifting devices in the material handling industry. How do you calculate what load is being transmitted to the spreader top support slings when actual load is being carried by main slings. Your email address will not be published. Purpose of Design Factors Mr. Duerr explains that the purpose of a design factor is to compensate for unknown load characteristics such as its weight. Just like lifting beams, spreader beams are used to widen the available lifting points on rigged loads and keep lifting slings at a 90 angle relative to the horizon. 1 DESIGN DATA. Leverage your professional network, and get hired. Copyright 2022 Bishop Lifting | All Rights Reserved. Spreader bars can be made in a variety of lengths, connection types, & capacities. Spreader Beam Design Calculation Xls. Lean on the subject matter experts of ITI Field Services when the need presents itself A one-stop shop for all things crane, rigging, lift planning, and material handling, the ITI Bookstore offers a wide variety of books, reference materials, training resources, field tools, and more. When they . Spreader Bar Design Process A Guide To Designing Lifting. This training module for the US&R Sructural Collapse Technician use tag lines. Seamlessly orchestrate process-centric best pra Competently leverage others high standar Appropriately pontificate synergistic para digm Seamlessly syndicate out-of-the-box quality vec why did the ethiopian government fall in 1991, Small Batch Cosmetic Manufacturing Equipment Uk, dynamically add rows to table react native, what happens when you finish all classes in bully, rectangular bathroom mirror with rounded corners, project for primary classroom the tropical rainforest, greenery garland near rome, metropolitan city of rome, spreader bar lifting device calculations and design excel. Rig your spreader beam correctly As an example, if you were to hoist a large rectangular load, the safest way to set the chains or slings is to have a two leg chain sling below each end of the spreader beam lifting points. Stove Top Stuffing Cerole| They are suspended by a crane from two slings and normally have two to four bottom slings attached for rigging to the load. Sign up today for the latest news and productupdates from Bishop Lifting! Spreader Bar Lifting Device Calculations and Design (1.0)Beams (File Repository) Created on 04 March 2016 34. The most common lifting device Bishop Lifting fabricates is the Liftmax Spreader Bar. A simple lifting beam is shown below: We can see that it has a lifting eye at its top in the middle, while the eyes below are used to connect the slings to the lifted object. . Models include the TSB1103, TSB1106, TSB 1204, TSB 1304, TSB1306, TSB1504 and TSB1506. Below-the-hook lifting devices such as spreader bars and lifting beams must be designed in accordance with ASME BTH-1 and are to be manufactured and used in accordance with requirements of ASME B30.20 which specifies requirements for marking, inspection, construction and operation. Congratulations! 'spreader bar design process a guide to designing lifting june 22nd, 2018 - rating plates and b30 20 below the hook lifting devices heavy tand tri share the post spreader bar design process - a guide to designing lifting and spreader''Rod Lifting Hook Design Calculation pdfsdocuments2 com 963kN := 60 Spreader bar lifting device calculations and design.) Simple Spreader Beam Calculation Arrangement Beam Details Type SHShf Size 25 x 25 x 2 Hook Load = 363.0 kN Material S275 Yield 275 E 205000 Sling Length = 4.80 m Mass / m M 1.41 kg/m Depth h 25 mm Height = 4.16 m Width b 25 mm Angle (degrees) = 60 Web thickness s 2 mm Flange thickness t 2 mm Root radius r 3 mm Length = 4.80 m Depth between Browse our inventory of new and used HYDRA-FOLD AUGER INC. The design of lifting beams must meet specific calculation requirements per BTH-1 to verify that the design will be safe and effective for its intended below-the-hook lifting application. Fortunately, on earth, physics does not change depending on your locale, so carefully crafted design considerations in one jurisdiction should "work" in others. The lifting classes are described in DIN 15018. design of lifting and tailing lugs pdf document. The spreader experiences the following stresses: Fig 6: Bending moment due to offset of force from centerline. two hook devices provide added lifting capabilities to your forklift trucks. Most erectors and riggers accumulate an assortment of lifting beams during the course of time. BTH-1 includes a structural design section covering fatigue requirements for lifting devices classified as service classes 1 through 5. Universal provide one tone spreader bar which is in stock and available worldwide via Universal engineering distributors and rental partners for any lifting equipments in a cost effective manner. Use an Industrial Scale. Below-the-hook lifting devices such as spreader bars and lifting beams must be designed in accordance with ASME BTH-1 and are to be manufactured and used in accordance with requirements of ASME B30.20 which specifies requirements for marking, inspection, construction and operation. It seem to be not correct. If not, the object will experience a tilt during lifting which is not desirable. Lifting beams are different to spreader beams because they attach to the crane from a single central point and can have several load attachment points along their base or adjustable points as shown above. STRESSES BASED ON AISC-ASD 2. Ordinary Lift Plan Elements Once a lift has been planned and approved, the appropriate rigging equipment, Variations in the design of the multi-lift spreader bar evolve over a period of time as requirements and technology change and the demand for a more efficient product is desired. ENGINEERING DESIGN FILE EDF Page Of8. Dear Weerawut In other words, a below-the-hook (BTH) lifting device is a tool or mechanical device that attaches to a crane or other lifting apparatus, and grabs and secures a load so that it can be moved safely from one location to another. Spreader bars, lifting beams, and other below-the-hook lifting devices are classified based on the frequency and capacity of lifts that are required of the device. If you have a unique design challenge where you could use some engineering assistance, please contact us to see how we can help you. As a broad distinction, in their purest forms: We design with custom manufacturing engineering personnel lifting devices as well as our Liftmax line of spreader bars, lifting beams, material baskets, padeyes, lifting lugs, bottle/drum . It looks like another good calculation Steve if we can resolve the problems I would like to publish it. Spreader Bar Lifting Device Calculations and Design Spreader Beam Design Spreadsheet (www.thenavalarch.com) - YouTube Design and verification of lifting lugs - mec Engineering Spreadsheets / 5.94 tons. Both pieces of rigging equipment are used to transport loads with overhead lifts. In many cases an intermediate spreader bar is used between the crane and the lift .