We started a project installing 10 of our 2” diameter pipe pilings to stabilize the corner of a home in Renton that has settled about 3”. This home is on a bit of a slope and has very soft soil under the South West corner. The project was reviewed by a structural engineer who factors in the weight of the entire house and determined that the pilings need to be installed at 3’ on center. We drive the pilings with either a 90lb pneumatic jack hammer or a 140lb Rhino hammer until they meet refusal criteria. Refusal is considered 1” of penetration or less per minute of continues driving. We are attaching a Dixie* brand foundation bracket to attach the piling to the foundation.
Once the pilings are complete, we raise the foundation and house framing up level.
Foundation repair brackets provided by Helical Supply LLC.