TRAIL BRIDGE INSPECTION TIMBER DETERIORATION & DECAY TIMBER DETEROIRATION & DECAY OBJECTIVES:  Recognize the Types and Causes of Timber Deterioration  Recognize Natural Defects.

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Transcript TRAIL BRIDGE INSPECTION TIMBER DETERIORATION & DECAY TIMBER DETEROIRATION & DECAY OBJECTIVES:  Recognize the Types and Causes of Timber Deterioration  Recognize Natural Defects.