The stringers bear on brackets bolted to the concrete landing.
The stringers are fastened to the porch framing with structural screws driven through a doubled rim joist.
Here, the author is using an impact driver to tighten one of the bottom tread brackets.
Each concrete tread weighs 105 pounds, making it a good idea to enlist help when placing the treads into position.
There are threaded inserts cast into the ends of each tread for the supplied galvanized machine bolts that fasten the treads to the brackets.
The bottom and top treads were installed first.
As the crew installed the remaining treads, they maintained a 1/4-inch gap between the ends of the treads and the stringers for drainage.
A Deckorators baluster and rail system was used to complete the stairs.