Our small resort LLC purchased a new aluminum pier in 2023. It consists of individual 8 foot sections that makes it portable. It is installed in Spring and removed for Winter. We are thinking this is 5 or 7 year property for depreciation purposes, but could not find anything pertinent in the IRS Pub 946 instructions. It is not a permanent wharf that would make it real property per the IRS. The old pier was disposed as junk so we would also like to know how to handle that on our depreciation schedule.