PRODUCTS

Helical Piers & Helical Piles

Helical piers, also known as anchors, piles or screwpiles, are deep foundation solutions used to secure new or repair existing foundations. Due to their design and ease to install, they are most commonly used whenever soil conditions prevent standard foundation solutions. Instead of requiring large excavation work, they thread into the ground. This minimizes installation time, requires little soil disturbance, and most importantly transfers the weight of the structure to load bearing soil.

When should they be used?

Helical Piers and Piles are needed for numerous new and existing residential, commercial, and industrial applications and may be used when the job specifies caissons, driven piles, or mini piles. Once foundations are exposed to moisture over a long period of time or construction is cited on unstable soil, structural and foundation damage becomes visible. This is when helicals are also used to correct compromised foundations. Helical Applications include, but are not limited to:

Piertech™

Square shaft Anchor & Round Shaft piers

Technical Drawings

  • Sample Footing Design
  • Sample Tie Back Design
  • Mechanical Properties
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Piertech™

APPLICATIONS

Our Applications

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HELICAL PIERS

Two type of Helical Piers

PierTech™ manufactures two patented types of piers. Round shaft, best used in compression situations, and square shaft best used in tension situations.

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ROUND SHAFT

Round Shaft Helical Piles

In applications where compression is the primary consideration, we recommend using round shaft piers. In Compression our round shaft has several advantages over the typical square shaft.

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Round Shaft Advantages

  • Superior lateral stability
  • Greater section modulus strength to resist twisting and deflection
  • Patented cross-bolt connection
  • Greater load capacities
  • Easy to install
  • Installs in any season
  • Minimal soil disturbance
  • Not affected by a high water table

Composition:

  • A round hollow shaft 2 7/8″ thru 12 ¾” O.D. typical.
  • Circular tapered plates (helices) are welded to the center of the shaft.
  • Helix diameters can range between 6″ – 48″ with a thickness of 3/8″ – 1″.
  • Helix pitch will range from 3″ – 6″.
  • Galvanized or bare steel options available

SQUARE SHAFT

Square Shaft Helical Piles

In applications where tension is the primary consideration, we recommend the Square Shaft Piers. They have several advantages over the typical square shaft anchors.

Square Shaft Advantages:

  • Greater yield and Tensile strength
  • Patented Cross-bolt Connection
  • Increased safety factor
  • Higher torque capacity
  • Easy to install
  • Installs in any season
  • Minimal soil disturbance
  • Not affected by a high water table

Composition:

  • square solid shaft 1 ¼” thru 2″ O.D. typical.
  • Circular tapered plates (helices) are welded to the center of the shaft.
  • Helix diameters can range between 6″ – 48″
  • with a thickness of 3/8″ – 1″.
  • Helix pitch will range from 3″ – 6″
  • Galvanized or bare steel options available
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Piertech™
Piertech™

CONNECTION

Cross lock™ connection

Our Patented Cross lock™ Connection was awarded ESR-3969 from ICC-ES for our 2.875″ diameter helical pile system. The connection instantly aligns and locks in place, eliminating the issue of lining up bolt holes or wasting time threading a bolt through a deformed hole. The Cross-Lock allows installers to simply connect and quickly continue the installation process.

Cross lock™ Advantages

  • Instant alignment
  • Complete steel on steel connection
  • Torque is fully contained in the coupling
  • Zero bolt hole elongation during installation
  • ICC-ER (ESR-3969) Certified
  • Superior strength and lateral stability
  • Reduce installation times up to 50%
  • Offered Exclusively by PierTech™ Systems
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How work?

How Do They Work?

The helical screw pile is screwed into the soil until a desirable load capacity has been achieved. It is then spaced at pre-calculated intervals to spread the load of the structure. In foundation repair applications, brackets are then attached to the foundation wall bases and weight is transferred to the pile.

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Piertech™

INFORMATION

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