I'm trying to figure out a recommended caisson diameter and depth for a structural load of 400 kips. I attached a table with recommended lateral load design.
Below is what I came up with.
450 #/sf (12.57SF) = 5,655 #/FT
5,655 lb/ft (57 ft) = 322,327.41 lb
=322.33 kips
400kip - 322k
=78kip
qu...