SHEAR WALL HOLD DOWNS & ANCHOR BOLTS
Traditional anchor bolts are still used to secure the 2×6 interior walls of this Kirkland home to the concrete floor. The mudsill anchor is installed at the time of the concrete foundation pour. Depending on the application, the foundation anchors are spaced 3 to 6 feet apart. One end of the bracket penetrates the wet concrete foundation at an angle. When the concrete hardens, the framing crew lays down the treated wood sill plate. Visible in the photo just below the sill plate is a layer of 1/4″ white foam. This is a sill seal that reduces airflow under the framed wall and makes the home more energy efficient and helps the home pass the required blower door testing. It also serves as a barrier to pests and insects entering the home and reduces moisture infiltration.
Another important structural fastener system is the shear wall strapping or hold downs.