Our house was built in 1999 and due to rain, snow and weather conditions in Iowa over the years our step to the front porch started to sink. We had a classic case of "saggy step". It had such a down slant that it made me nervous every time we had people over that they were going to trip as they stepped down. Something needed to be done and we decided it was time to pour a new step and Labor Day weekend was the perfect long weekend to tackle the project.
First thing to do...break out the old step. Enter sledge hammer. Tip number 1, cover up. I covered the step with an old sheet to minimize flying bits of concrete and it worked really well. Tip number 2, start on the edges and work in. I started to break up the step Friday night and got as far as the picture below. That was around 9pm and I decided to take a break till the following morning since the echoes of the sledge hammer could be heard through the neighborhood.
Then it was time for some digging and building a form! I dug two 40 inch footers, one on each side of the step. Similar to a deck, if I dig footers down below the frost line, the step shouldn't move and shift with the changing weather (in theory).