In the spring, I plan on replacing the stairs down to the lake. Currently, there are 15 steps that are 15'' square patio stones with wood ties around them. My plan is to remove all of it and start from scratch. Instead of a long set of stairs, I want to put a couple in, and then have a flat landing, then a few more, then a landing, etc. I am trying to figure out the footings needed as well as what I need to build them.