How to Calculate Bearing Capacity in Clay for Foundations?

[Chapman2233]

Homework Statement

View attachment.

Homework Equations

View attachment.

The Attempt at a Solution

View attachment.

Everything should be in the attachment, i back tracked my working with the answer given on the sheet but i still don't end up with the right solution?

 

[PhanthomJay]

Everything should be in the attachment, i back tracked my working with the answer given on the sheet but i still don't end up with the right solution?

You don't show your workings. Please do so in order that we may better assist. Note that the shear strength is given. You need to correlate that with the bearing capacity of the clay.