Overturning calculation for sonotube
Overturning calculation for sonotube
(OP)
Obviously a sonotube is not meant to be used for much overturning capacity. But when doing a calc for its overturning capacity, do you typically maybe treat the sonotube area and base dimensions as a square circumscribed with a circle? Doesn't make too much difference, but I though I'd ask what others do. Thanks.






RE: Overturning calculation for sonotube
RE: Overturning calculation for sonotube
RE: Overturning calculation for sonotube
enjoy
RE: Overturning calculation for sonotube
RE: Overturning calculation for sonotube
RE: Overturning calculation for sonotube
RE: Overturning calculation for sonotube
Unless you tell us otherwise, I suspect your sonotube pier is not deep enough (long enough embedment) to really develop a point of fixity, like might exist on a long drilled pier or pile. Your pier will more than likely just tend to pivot about its base plane (top of footing), and you will be dealing with passive and active soil pressures like you might have with a retaining wall, foundation wall or some such. There are a number of papers on pier foundations for signs, flag poles, canti. columns and the like, and their resistance to moments applied at grade, but I can’t point you to one off the top of my head. I think the IBC has a procedure, a number of highway depts. will have some methods, etc.
RE: Overturning calculation for sonotube