I'm trying to hang some Elfa dressers and shelving in my new apartment. This is the 3rd apartment I'm hanging these shelves in, and haven't had much issues hanging them before. The problem I'm facing is that my stud finder thinks it finds a stud, and when I drill, it's hollow.
This is a 40+ story building in downtown Manhattan that was converter from an old bank.
When I used my straight-line stud finder with accuscan, the spacing for studs it alerts me make sense. I've tried 4 times, and each time, where I drill where a stud should be, I get hollow.
Any idea what might be going on? Any alternative ways to find studs you can recommend?