I have a client that drove about 50 10" diameter piles along their water front property and now want to build a two story boathouse on it. They were driven 6-8' into the soil with a 4500lb drop hammer. They stick above the soil about 15 feet, than there is a dock and above the dock is a two story structure. The contractor hired a PE that is telling them the piles are fine and we can put this building on them. How can he know that if he doesn't know what type of soil or anything about the installation readings (there were none). I've recommended doing exploratory work to determine our soils. I'm being treated like I'm crazy and an overly conservative engineer. This structure will cost $400,000 and have large doors that must remain operable, excessive deflection will make them inoperable. I'm a structural guy and haven't done piles since college. We have 3kip horizontal loads and 34 kips axial loads on some piles. Am I crazy?
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