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Lifting spreader bar design.
Spreader bar design process designing lifting and spreader beams.
We are the lifting equipment design specialists geared specifically for building custom lifting devices according to the asme bth 1 design standard and asme b30 20 below the hook standards.
Meets or exceeds asme.
Sparta s approach to optimizing the spreader bar design otherwise known as lifting bar or lifting beam is an iterative process.
Spreader bar lifting device calculations and design spreader bar lifting device calculations and design.
Design and construction of lifting beams david t.
The main difference between a lifting beam and a spreader bar is the design which dictates the way the force is transmitted during the lift.
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.
It covers all aspects of the selection design manufacture verification testing repair modification storage inspection and safe use of lifting beams and spreader beams.
Most erectors and riggers accumulate an assortment of lifting beams during the course of time.
How to design a spreader bar.
Spreader bars lifting spreaders are a very simple device and consist of a long bar that functions to hold a sling apart to the lifting distance.
In response a large below the hook lifting devices market has grown supporting projects with some exceptional solutions see modulift liftmax caldwell.
The basic lifting beam is shown in fig.
Some common profiles are shown in fig.
All liftmax spreader bars come standard with stainless steel data plates with individual serial numbers and rfid tracking and are proof tested to 125.
Safe working load swl spreading length safety factor in compression yield stress of the beam material allowable tensile stress.
Tubular design with adjustable pins for overhead lifting.
The table of contents next page lists the sections covered and contains links to each section.
Ricker lifting beams also known as spreader beams are used to assist in the hoisting process.
Custom liftmax telescoping spreader bar.
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Verification of spreader beams lifting beams and lifting frames.
6 quickies for rigging engineers lifting beams and spreader bars have become an integral part of complex crane rigging and lifting activities.
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