I am trying to optimize the design. My best solution would be a 3.5' dia. shaft with a 8ft. bell bearing at 45'.
qu = 6 KSF
Skin friction = 450 #/ft
Laffective = 37-18 = 19ft (no skin friction above the bell).
P total = 400 kip
sk = 94 kip
P = 306 kip
D= square root(4p/piQU) = 8.05 ft...
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...
