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Steel at bottom of support. This photo shows a cross section of timber fastened inside a steel frame lying on its side, long way in the picture, with four cross bars bolted across the top to hold the timber in place, 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. The right hand side of the frame has several small sheets of steel clamped in place between the piece of timber and the right hand bottom side of the frame itself. The eye-hook, which is fastened through the top of the timber, is clearly visible, with the pulley and hook attached.
Neoprene at top of support on compression side. This photo shows a close up of a cross section of timber fastened inside a steel frame, which in turn is fastened to a concrete surface. Only three of the four cross bars are visible in this closeup. A piece of neoprene is wedged between the timber and the right hand upper side of the steel frame on the compression side.
FHWA-HRT-05-096
