Foundation piering is one of the best methods for repairing settling or sinking foundations. Not only it is up to ten times cheaper than replacing the building foundation, but more importantly it allows to remedy the cause of settlement and level your home back to its normal position so no cracks or other issues related to foundation settlement occur in the future.
There are two types of foundation piers PEP Waterproofing uses to fix settling or sinking foundation - push piers and helical piers. Schematically both types of piers are strong steel tubes driven into the soil with a hydraulic equipment under your home footing. Proper installation of the foundation piers requires driving them down deep enough to hit bedrock or other competent load-bearing strata.
The Grip-Tite foundation push piers are used to fix foundation settlement. The push piers are pushed into the ground with a hydraulic pump until they reach bedrock or other stable strata. After the piers properly installed the load of the structure is fully transferred to the piers through underpinning brackets that are positioned under the footing. The piers are spaced a maximum of 6 feet apart and are used to level or stabilize an existing foundation.
The Grip-Tite push pier consists of pier tube, tube reinfocing insert, and foundation bracket. The push pier parts are manufactured from high strength/low alloy hot rolled steel. Push pier structural tubes are 3" in diameter. There are two thicknesses for the tubes' walls; Standard Duty is 0.12", and Heavy Duty is 0.188". Also, there are two types of the brackets; Standard Duty Bracket for the most cases, and Heavy Duty Bracket for the special cases.
Foundation pier system is tested by an independent laboratory to peak loads exceeding 70,000 pounds (70 kips).
End-bearing pier that does not rely on friction for capacity
Each pier load tested during installation
Ability to reach greater depths using a starter tube with friction collar
High-strength steel pier sections and sleeved couplings have high resistance to bending
Long life span, resistance to corrosion (design life in moderate soils more than 100 years)
Available with hot-dipped galvanized coating for added corrosion resistance
The Grip-Tite foundation helical piers are used to repair an existing foundation structure. The helical piers are screwed into the soil with a hydraulic torque motor until a pre-determined torque is reached. A bracket is then placed on the steel shaft and positioned under the footing of the structure, transferring the load of the structure to the helical piers. The structure can then be stabilized or lifted back level. The helical pier can be both time and cost effective.
The Grip-Tite helical pier are either manufacatured with square or round shafts, and one or more helix bearing plates welded to the shaft. Grip-Tite helical piers have a true helix, meaning the helix and helix spacing along the pile shaft allows the second and/or third helical plate to follow the same general path as the first helix when “screwed” into the soil. This minimizes the disruption of soil.
The helical pier threaded rod ulimate tensile strength is 150,000 psi, yeld tensile strength = 130,000 psi.
Can be installed with either handheld or small equipment
Can be installed in areas of limited or tight access
Foundation concrete can be poured immediately following installation
Lead sections can be configured to achieve design depth and capacity
Cost-competitive versus other deep foundation alternatives
Vibration-free installation (unlike traditional driven piles)