Problem $3-$ Anchored Bulkhead Design Using Free Earth Support

The conditions at the site of a proposed anchored bulkhead are shown below. Determine the requirements for design of the bulkhead as follows:

$(1)$ Develop and plot the design pressure loading and resistance diagram for the wall.

$(2)$ Set up a spreadsheet to determine the required depth of embedment, and Free Earth Support Values of maximum bending moment and tie force.

$(3)$ Using Rowe's procedure, determine the design value of the bending moment.

Perform a sensitivity analysis by changing the friction angles to $35$ and $40$ to determine its effect on the embedment, moment and tie force. Comment on the effects of increasing the friction angle on $K_{ah},K_{ph},$ required embedment, maximum moment and tie force in a table.