Skin Friction for footing

[createutoo]

Would it be right to reference end bearing and skin friction for the design of footing which is 3' in dia and 15' deep?

 

[GeoPaveTraffic]

Sometimes, depends on the materials and the purpose of the foundation.

Mike Lambert

http://www.shannonwilson.com

 

[createutoo]

It is the footing for the flagpost. The footing is 4000 psi concrete.

 

[hokie66]

Flagpoles usually don't cause much in the way of vertical loading, so you can probably take it all in end bearing. Lateral loading causes bending of the pier, and has to be resisted by passive soil pressure.