Most docks in Florida are built using wood piles, structural members, and decking. The structural members typically include pile caps that support the stringers which run along the axis of the dock to support the decking. The pile caps are typically connected to the piles and use either stainless steel or galvanized thru-bolts. The connections for each element have the ability to corrode over time and may result in failure of the dock prior to the wood aging beyond it's design life and vice versa. Additionally, the piles are subject to rotting and can be attacked and damaged by marine boring organisms. Many piles will begin to show these signs either at the mudline or at the waterline. This is why it is very important that the company you enlist to inspect your dock structure do a complete in and below water inspection.