Resistance or “Push” Piers are hydraulically driven sections of steel pipe that can be driven through unstable soil into load bearing strata. Resistance piers come in varying widths and lengths depending on the scope of the repair and the depth of the load bearing soil. Resistance Piers can be galvanized or non galvanized depending on the engineers specifications and are recommended where load bearing soil or bedrock is relatively close to the topsoil. Resistance piers do not require heavy equipment to be installed and the repairs can be performed using light weight, portable equipment. Looking for a quote on resistance piers to stabilize your foundation? Contact us today!
Composition of a Resistance Pier
Liftech’s resistance pier is a manufactured, two-stage pile foundation system designed specifically to produce structural support strength. First, the pier pipe is driven to a firm bearing stratum; then the lift equipment is typically combined with a manifold system to lift the structure (if required). This procedure provides measured support strength. Atlas piers are spaced at adequate centers where each pier is driven to a suitable stratum and then tested to a force greater than required to lift the structure. This procedure effectively load tests each pier prior to lift and provides a measured Factor of Safety (FS) on each pier at lift. Workspace is not normally a problem when using resistance piers. They can be installed using portable equipment in an area that measures approximately three feet square. The pier may be installed from the interior or on the exterior of the footing.
Advantages of Liftech’s Resistance Pier System
- Portable equipment allows for installation in areas of limited access
- Immediate loading piers are individually load-tested during installation
- No soils to remove
- No vibrations