What is a cripple wall?

A cripple wall is a short wall that extends from the foundation to the first floor framing of a building. It is typically used in houses with raised foundations to provide additional support and stability during seismic events.

Cripple walls are vulnerable to damage during earthquakes because they are not securely anchored to the foundation and can collapse easily. To improve the structural integrity of a cripple wall, it is often recommended to reinforce it with plywood or steel bracing.

In areas prone to earthquakes, building codes may require cripple walls to be properly reinforced to minimize the risk of structural damage. Regular inspections and maintenance of cripple walls are also important to ensure the safety of a building in the event of an earthquake.