Goal: I’m working on a civil engineering project and need the explanation and an

Goal: I’m working on a civil engineering project and need the explanation and answer to help me learn.
I just need you to complete task 2 that is shown at the end of the document titled “attachment 1”.All data will be provided with the documents I am attaching. Please make sure you give me all of the steps worked out and explained with a correct final answer. Thank you.