Renton foundation repair & leveling project

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.