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The lifting beam (also known as traverse, spreader beam) is a steel beam that is attached to the hook of the crane in order to spread the slings from one end of an elongated load (like a wall panel) to another. The bottom of the beam has multiple connection points for hanging the load. [1] H-shaped traverse
The four-point flexural test provides values for the modulus of elasticity in bending, flexural stress, flexural strain and the flexural stress-strain response of the material. This test is very similar to the three-point bending flexural test .
The spreader is placed between the container and the lifting machine. [1] The spreader used for containers has a locking mechanism at each corner that attaches to the four corners of the container. A spreader can be used on a container crane, a straddle carrier and with any other machinery to lift containers. Spreader operation can be manual ...
Spreader (sailboat), a spar on a sailboat used to deflect the shrouds to allow them to better support the mast; Spreader bar, a BDSM bondage device; Spreader beam, a lifting device used to distribute forces appropriately for structural or interference reasons; Container spreader, a tool used for lifting containers and unitized cargo
The spreaders may be fixed (rigid) or swinging (pivoted at the mast). Most cruising boats have fixed spreaders, but swinging spreaders are found on some racing boats. The length of a boat's beam determines how long the spreaders may be, so some boats have multiple sets of spreaders so the shroud can reach the desired angle from the mast. [2]
The deflection at any point, , along the span of a center loaded simply supported beam can be calculated using: [1] = for The special case of elastic deflection at the midpoint C of a beam, loaded at its center, supported by two simple supports is then given by: [ 1 ] δ C = F L 3 48 E I {\displaystyle \delta _{C}={\frac {FL^{3}}{48EI}}} where
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