Helical piles are commonly referred to as helical anchors, helical piers, or screw piling. These piles work by avoiding weaker soil layers and transferring loads of a structure to competent load bearing strata.
Helical piles come in two basic designs, Round Shaft Pipe Piling and Solid Square Shaft. Round Shaft Helical piles are unsurpassed when piles must be exposed to greater lateral loads, while our Square Shaft Screw Piles are more effective and efficient in higher capacity requirements (especially in lime rock).
HOW DO HELICALS WORK?
THelical piles function by being twisted into the ground, in a comparable way that a big lag bolt can be rotated into wood timber. The foundation screw piling is rotated into the ground by a hydraulic anchor drive component attached to an excavator until the torque capacity for the structure is met.
The helices on the anchor rotate into the soil with a constant descend, as opposed to auguring through it. The helical fights and shafts are specifically shaped and designed to meet the specific demands of the structure to be supported.
WHAT DO HELICAL PILES DO?
Helical piles provide foundational support for all types of structures, whether on land or marine related.
Just like old-fashioned wood and concrete pile-foundations, helical piles (also known as screw piles, helical piers, helical anchors) are entrenched deep underground to support the structure which rest atop them. Building foundations, swimming pools and waterfront homes all contain numerous helical piles to support engineered loads. We regularly install helical piles across to support both new and existing structures including:
- Residential, Commercial, and Industrial Buildings
- Bulkheads, Seawalls, and Jetties
- Electrical Transmission Towers and Solar Farms
- Portable Buildings
- Bridges, Nature Boardwalks, and Docks
- Re-Levelling and Strengthening of Existing Foundation
- Permanent or Temporary Support for Re-Levelling of Existing Structures that have Settled
- Hurricane Capacity Improvements and Tiedowns
- Responding to Building Damage from Hazards such as Hurricanes, Tropical Depressions, and Wave Generated Forces
HELICAL PILES FOR MARINE APPLICATIONS
- Tie-Back Anchors for New Seawalls/Bulkheads
- Bridges, Nature Boardwalks, and Docks
- Underwater Support of Utilities
- Slope Stabilization and Shoring
- Permanent Support for Existing or New Retaining Wall Structures
- (Particularly if it is Required in a Short Time Frame)
Temporary Anchoring of Equipment or Vessels Particularly Against Wind Uplift. Piles can be Removed and Reused.
HOW SCREW PILES ARE INSTALLED
Helical piles are twisted into the soil, much like a wood screw. The helices propel into the soil pursuing a constant pitch, as opposed to auguring through it. The helical fights and shafts are specifically shaped and designed to suit the existing ground conditions.
Our piles are installed with a wide range of equipment dependent on accessibility and capacity of the helical piling. The equipment may range from small handheld hydraulic drive, a small excavator to installation by a 50,000-pound excavator. Hydraulic powerheads are used to apply the large torque that is required to screw a helical pile into the ground.
The combination of hydraulic drive head and handling machine required is determined by:
- Engineered installation torque requirements
- Torsional capacity of the shaft
- Site access constraints (height/width/clearance to obstructions)
- Soil profile and ground site conditions
Coastal Foundation Solutions possess state of the art high-power digital torque indicators to measure foot pounds of torque during installation. These units are calibrated annually to insure accurately detailed readings are available to the pile monitor.
Florida helical piling experts, Coastal Foundation Solutions, will provide you with a specifically designed, installed and certified helical pile service for all your residential, industrial, commercial and marine requirements.