Wall Tiebacks When your wall has both cracking and moderate movement, you are a candidate for this type of repair. Wall Tiebacks are mainly used when the goal is to prevent any further lateral movement. The advantage to wall tiebacks is the cost factor. This type of repair is generally one half of the cost of rebuilding a foundation. Also a lifetime warranty against failure.
The main goal for a wall tieback system is STABILIZATION.
|Step 1: The cement block is opened up approximately 8 inches. The Helix is installed along with the lead section. Normal starting length is 7 feet.|
|Step 2: The crew spins the helix deeper into the soil on the outside of the structure. This is done with a hydraulic unit and every step of the way is monitored with a pressure gage.|
|Step 3: If the proper torque is achieved, we will move to step #4, if not an extension is put into place to drive the helix deeper to a depth to achieve a locking load.|
|Step 4: Once the helix is locked in, we attach a threaded rod connection onto the shaft. The threaded rod comes in through the block and is then completely sealed. We use brick and mortar to repair the opening in the block.|
|Step 5: The cement block opening was restored with brick and mortar. Then the steel plate is installed with the washer and bolt. This is tightend to approximately 110 - 120 foot pounds.|