On Nov 22, 2021, at 4:37 PM, Dennis Storzek <dennis@...> wrote:

On Mon, Nov 22, 2021 at 12:31 PM, Ralph W. Brown wrote:

Do you and anyone else know when sheet pile was developed and came into common usage?

This website says it was developed in 1906: https://en.wikipedia.org/wiki/Larssen_sheet_piling

Common usage was likely after WWII , when the cost of labor made wood cribbed retaining walls more expensive that the cost of steel.

Dennis Storzek