Why would you have a tapered concrete base with the narrow part down? Seems like that would make it easier for frost heaves to force it out of the ground.
Ideas to form a tapered (conical) concrete base for a flagpole?
Hello Gents, mind if I pick your brains a bit as I'm kindly seeking suggestions on how to form a tapered/conical shape for a concrete base at the bottom of a new flagpole. Have done my fair share of concrete but my mind's coming up cloudy on this one. I thought about getting my hands on some aluminum coil stock in as wide a roll I can find and simply forming a square base and then drop the pre-formed sheet metal inside the square formwork (with supporting wedges between the standard forms and the conical coil). But something tells me I'm over-complicating it.
It will be buried in the end, with only the top face exposed so I know it doesn't really matter and I could just use a sonotube but after seeing this detail I still would like to know how it could/should be done. We're getting near a lot of architectural concrete over the last few years -- We like pipe and dirt better, but more and more the GC's like to award entire site developments to one subcontractor, basically the "civil GC" as opposed to dealing with a half dozen different subs for the sitework... I suppose we have to ride the waves that come our way.
Thanks in advance!
PS - I've attached the detail (and colored the concrete base for clarity... also I would not want to have it made in precast if it happens to come up.
![Rectangle Font Parallel Slope Schematic]()
It will be buried in the end, with only the top face exposed so I know it doesn't really matter and I could just use a sonotube but after seeing this detail I still would like to know how it could/should be done. We're getting near a lot of architectural concrete over the last few years -- We like pipe and dirt better, but more and more the GC's like to award entire site developments to one subcontractor, basically the "civil GC" as opposed to dealing with a half dozen different subs for the sitework... I suppose we have to ride the waves that come our way.
Thanks in advance!
PS - I've attached the detail (and colored the concrete base for clarity... also I would not want to have it made in precast if it happens to come up.
