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FOUNDATION REPAIRS

Correct Foundation Problems with Helical Piers

Sinking foundations, protruding retaining walls, and leaning chimneys are very common in residential and commercial sites. Sinking foundations can be caused by, for example, poor drainage, unstable soil, tree roots, and other natural factors. Settlement can be discovered by uneven floors, buckled walls, doors not shutting correctly, gaps/cracks in floors and drywall, “step cracks”, vertical cracks, and horizontal cracks in block and brick foundation/retaining walls.

New homes take on average 20 years to finish settling. During that time, cracks can start to form in the foundation wall as the home’s footing gets moved and displaced. Through the process of lifting and stabilizing foundations using helical piers, Jacksonville Contracting can repair your issue! We can effectively and professionally handle all residential and commercial projects.

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Reinforce Retaining Walls with Helical Tiebacks

If you are experiencing a horizontal crack in your outdoor retaining wall, helical tiebacks might be the solution to your problem. Helical tieback anchors are used to stabilize and even push retaining walls back to their original position.

Helical tiebacks are used to secure retaining walls or to secure shoring of excavations. Multi-helix screw anchors are used because they enable the tiebacks to remove the performance uncertainties and costs associated with a grouted anchor when used in loose, sandy and low-shear-strength clay soils. When screwed into the soil, the helical anchor acts as a deep, end-bearing tension member to secure the retaining wall.

Other advantages to tiebacks for retaining walls and shoring include:

  • Tiebacks may be installed with conventional rotary drilling equipment.
  • Screw anchors are quick to install. Typical installation time per tie back is 20-30 minutes with no spoils removal necessary.
  • Elimination of grout allows for immediate loading or testing.
  • In some cases, the screw anchors can be withdrawn and reused.
Helical Tiebacks (30)

HOW TIEBACKS WORK FOR A RETAINING WALL

The lead section of the tie back anchor can be equipped with one or more helical bearing plates ranging from 6” to 16” diameters. Plates are welded onto a steel shaft, each one acting as a separate anchor for maximum holding capacity. The lead section is followed by extension rods as it is drilled through the no load zone directly behind the wall and into the load zone.

David Marcus Rehoboth Beach 4 Large

SINKING FOUNDATION

If you are experiencing “step” cracks in your block or brick wall, that means that your home’s footing has cracked. This can lead to major openings and support issues in your home’s foundation. To fix this issue, helical piers are needed.

A helical pier is a screw pile that will be drill into the ground until the acceptable torque rating is reached in order for the pier to reach its load capacity. To use a helical pier, excavation around the problem area will be needed. The pier(s) will be placed at/near the problem area of the foundation (footing) in order to eliminate the sinking. The “L” shaped underpinning bracket(s) will be attached to the chiseled section of the footing so the pier(s) can begin to take on the weight of the structure.

Once the pier(s) and bracket(s) are in place, the lifting begins by a hydraulic jack pushing down on the helical pier and raising the footing back to its original position. Backfilling the excavation site is then the last step to the process. Depending on how many helical piers are needed to repair the foundation, most projects are complete in one day!

Reasons why chimneys, foundations, and/or your retaining walls settle:

LEANING CHIMNEY

If you are experiencing a leaning chimney, Jacksonville Contracting can fix that for you! A leaning chimney can be dangerous to the structure of a home. Also, it will not pass any home inspection. In most cases of a leaning chimney, the chimney will remain intact, but the foundation underneath has most likely deteriorated over time. This can cause the chimney to “break away” from the home causing a gap to form between the chimney and the house. This will allow water to enter causing more damage to the home as well. Jacksonville Contracting can re-attach the chimney to the house by using helical piers! 

By using helical piers, we can lift the chimney back to its original position without any damage to the chimney or the home. To be able to lift the chimney, excavation around the chimney is required to install the helical pier(s). The pier(s) will be placed at the required positions around the chimney’s foundation (footing) in order to stabilize the chimney. Then the “L” shape underpinning bracket(s) will be attached to the chiseled section of the footing so the pier can begin to take on the weight of the structure. 

Once the pier(s) and brackets(s) are in place, the lifting begins by a hydraulic jack pushing down on the helical pier(s) and raising the chimney back to its original position. Backfilling the excavation site is the last step in the process. Depending on how many helical piers are needed to repair the chimney, most projects are complete in one day!

Jeff Rink Chimney Bel Air 10 Large
Gold Mine Helical Pier 155 Large

NEW CONSTRUCTION

New construction helical piles are for poor soil areas, that are too unstable to construct new buildings/structures on. They consist of lead sections with bolted couplings, extensions, and pile caps. They are cost efficient and have no disturbance to the surrounding areas. The piles will be drilled into the ground to the required depth and torque to eliminate the active soil that the building will be constructed on. 

With a “speedy” installation time frame, these helical piles can be installed in any weather condition, limited access areas, and can take on the load immediately after installation. Our piles are evaluated by ESR-2794 from ICC Evaluation Service. Per the engineering requirements, the piles will be placed per the provided engineering plans to provide the strength and durability that the helical piles can accomplish.

Advantages in using helical piles for new construction:

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Jacksonville Contracting has been a certified Chance Installer since 1997.

Below is a more in-depth look from Chance on their Systems that we utilize. https://www.hubbell.com/chancefoundationsolutions/en/solutions/residential/basement-wall-repair 

Problems with your foundation?

If you are experiencing a horizontal crack in your outdoor retaining wall, helical tiebacks might be the solution to your problem. Helical tieback anchors are used to stabilize and even push retaining walls back to their original position.