Simpson CD18312M 3/16" X 3-1/2" Mushroom Head Crimp Anchor - Zinc, Pkg 100 Deck Post Caps The LSC installs at the

The LSC installs at the top of the stair stringer

The "chair" is designed for optimum concrete flow when concrete is wet and meets the code requirement of 1"

Use SDWS22312DBB Structural wood screws

With concealed flanges

Simpson CD18312M 3/16" X 3-1/2" Mushroom Head Crimp Anchor - Zinc, Pkg 100 Deck Post Caps The LSC installs at theThe Simpson Strong Tie Crimp Drive anchor is an easy to install expansion anchor for use in concrete and grout filled block. The pre formed curvature along the shaft creates an expansion mechanism that secures the anchor in place and eliminates the need for a secondary tightening procedure. This speeds up anchor installation and reduces the overall cost. The low profile mushroom head works excellent for attaching wood or light gauge steel to concrete