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This figure shows an elongated rectangle, representing a piece of timber cross section, standing straight up on end. There are two darkened squares, one beneath the cross section and one resting on top that depict Steel end caps with the one at the top resting beneath a black cylindrical object depicting a Spherical Swiveling load head end cap. On any of the four sides of the cross section are five blackened squares each four small rollers attached to each and rest against the wood. These represent the Restraining cage with five roller supports per side (all four sides).
FHWA-HRT-05-096
