File memo of calculation and served the same on respondent before hearing date

You can follow this link for your answer.

https://www.codot.gov/programs/bridge/bridge-manuals/sample-calculations

Thank you. But this is so complicated. Can you pls help with which exactly needs to be referred? And some insight on what exactly is this procedure? I presumed it to be a 1-page document to declare the amount of claim I wish to put on the Respondent/Builder.