Flagpole Footing
Flagpole Footing
(OP)
Hello,
I'm working on a project that will use flagpole-type footings. Some of the footing locations will have a finished surface (such as asphalt) to help resist some lateral load, but I don't feel the surface is strong enough to fully constrain my footing, so I want to approximate a partially-constrained condition. Some engineering software is able to tell me what my constraining force will be, but I can't see what formula is being used and I don't see any reference to constraining force in the IBC. Do any of you know how the flagpole footing equations in the IBC are derived, and how the constraining force may be calculated? I've tried manipulating the IBC equations to get a better idea of what these equations are doing, but I'm having trouble getting the statics to work out.
If anyone has guidance to offer or references to cite, it would be greatly appreciated.
I'm working on a project that will use flagpole-type footings. Some of the footing locations will have a finished surface (such as asphalt) to help resist some lateral load, but I don't feel the surface is strong enough to fully constrain my footing, so I want to approximate a partially-constrained condition. Some engineering software is able to tell me what my constraining force will be, but I can't see what formula is being used and I don't see any reference to constraining force in the IBC. Do any of you know how the flagpole footing equations in the IBC are derived, and how the constraining force may be calculated? I've tried manipulating the IBC equations to get a better idea of what these equations are doing, but I'm having trouble getting the statics to work out.
If anyone has guidance to offer or references to cite, it would be greatly appreciated.






RE: Flagpole Footing
https://www.enercalc.com/sel_help/pole_footing.htm
http://www.oregon.gov/ODOT/hwy/traffic-roadway/doc... (see pages 28 and 29)
http://www.google.com/url?sa=t&rct=j&q=&am... (ASABE EP 486)
RE: Flagpole Footing
http://elibrary.asabe.org/abstract.asp?aid=43919