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This photo shows a cross section of timber lying on its side on a concrete surface. The piece of timber is fastened inside a steel frame, with four cross bars bolted across the top to hold the timber in place, while the apparatus itself is bolted directly to the concrete floor. A pulley system is rigged across the floor a ways, itself bolted into a concrete wall. From the wall emerges a long hydrolytic looking apparatus. To this apparatus is fastened a long steel cable, which itself is fasted to a large pulley, which in turn is fasted to an even larger hook. This hook is threaded through the eye of a large bolt, which has been drilled into the top half of the piece of timber and fasted through the other side. It would appear the hydraulic pulls the steel cable through the pulley, in turn pulling on the eye threaded through the timber until the timber snaps.
FHWA-HRT-05-096
