The commonly used screw washer has a flat top surface, which is convenient, but the maximum yield strength is just under 8kN. That means it will also lose to 10kN corner hardware.

When using high-strength type corner hardware as a foundation, it is necessary to use foundation anchors appropriate for the strength to ensure that the pull-out force of the columns is transmitted to the foundation.

​Reference hardware:Omega round washer 70

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​[Point! ] Be careful with discontinuous foundation beams

For wooden foundations, the rising part of the foundation is treated as a foundation beam.

The rise of the foundation tends to be discontinuous due to access points, etc., but it will not function as a beam unless you are careful about reinforcement.

It is important to consider foundation discontinuities by using underground beams or flat beams.