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DS-65 post. This photo shows a closeup of a cross section of timber fastened in a steel frame, which in turn is fastened to a concrete surface. Two of the four cross bars are visible in this closeup. The timber has snapped, the cracking beginning between the first and second cross bar moving in a diagonal fashion three quarters of the way through the width of the beam.
Grade 1D post. This photo shows a closeup of a cross section of timber fastened in a steel frame, which in turn is fastened to a concrete surface. Only one of the four cross bars are visible in this closeup. The fracture begins and remains nearly parallel with the visible cross bar, splitting the timber straight across the width of the beam.
FHWA-HRT-05-096
