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Each edition of GroundED features a lead article written by one of Foundation Supportworks' engineers or product experts. It also includes case studies from across the Foundation Supportworks Network showcasing the real-world use of Foundation Supportworks' various foundation, retaining wall and slab support products.
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Helical piles utilize helix-shaped bearing plates as the primary load transfer mechanism at depth. A helical pile, therefore, must penetrate through the same soils it will use for its end-bearing capacity.
The previous GroundED 57 article topic, "Bearing Capacity Factors for Helical Pile Design," referenced the individual bearing method for calculating the end-bearing capacity of a helical pile.
Helical Pile Capacity: It has been our experience that most design professionals utilize the individual bearing method in calculating the end-bearing capacity of a helical pile.
Helical piles, also known as screw anchors or screw piles, have a rich history dating back to the original screw pile patent granted to Alexander Mitchell in 1833.
A helical tieback system is a factory-manufactured steel foundation designed to resist axial tension loads.
Helical piles quite literally come in different shapes and sizes. The most popular shapes for helical shaft cross-sections are solid square and hollow round.
Two of the most common methods for predicting helical pile capacity are the Individual Bearing Method and the Torque Correlation Method.
The Foundation Supportworks PolyLevel product line consists of polyurethane foams and resins for use in a wide range of geotechnical and structural applications.
The first step in evaluating anchor capacity is to determine if the anchor has a shallow or deep condition.
As a helical pile and push pier designer, I long for that soil profile that is "ideal" for the project...
There may be times when you want to document the capacity of a push pier beyond the capacity information obtained during a typical installation.
The company recently held its fifth annual Redefine Conference near its world headquarters in Omaha, Nebraska.
Consider this, you receive two widely different helical pile quotes from two contractors, for the same project and the same compression loading.
Supportworks is pleased to announce the addition of the Model PP237 push pier system to our existing push pier evaluation report, IAPMO ER-289.
The Torque Correlation Method is widely used for estimating or verifying helical pile capacity during installation.
Helical tiebacks are commonly used to provide additional lateral support for poured concrete retaining walls, sheet pile walls, soldier pile and lagging walls or other earth retention systems.
Protective coatings for steel piling include, among others, coal tar epoxy, fusion-bonded epoxy, zinc coatings and powder coatings.
Supportworks designs, manufactures and distributes best-in-class foundation and concrete stabilization and repair products, while also providing software, business resources and consultative trainingand support to contractors who purchase those products.
Small diameter helical piles are a proven, economical foundation that can be installed with relatively small installation equipment, yet be advanced deep into the ground to achieve high capacities.
Supportworks, Inc. celebrated a major milestone by moving into its new national headquarters in June-just two months after celebrating its 10-year anniversary.
Often the engineers at Supportworks will make recommendations for shaft sizes of helical piles and push piers based on the pile buckling potential.
Building products are commonly evaluated by third-party evaluation services to show compliance to existing building codes. These evaluations are particularly useful for code officials and design professionals to verify suitability of a manufactured product for a building project.
Helical soil nails are a relatively new alternative to grouted soil nailing and differ from grouted tendons in how they develop resistance.
Designers and manufacturers continue to provide push pier systems capable of ever-increasing load capacities and improved performance. This edition of GroundED summarizes the development of the push pier system and includes case studies of commercial applications by Supportworks dealers.
Supportworks' Model HP350 helical pile system has received compliance from the ICC Evaluation Service, LLC (ICC-ES).
Here at Supportworks, we continually strive to better educate engineers and design professionals on the unique foundation stabilization solutions we offer.
The eighth issue of this newsletter (Summer 2011) included a discussion of the three most common methods used to predict helical pile capacity.
Helical piles and tiebacks are installed with hydraulic drive heads that rotate the product into the ground by the application of torque.
Helical piles can be installed in areas of limited access with smaller equipment, yet achieve relatively high capacities.
You discovered that your project requires a deep foundation to provide adequate structural support. You also suspect based on the design loads and soil conditions, coupled with limited equipment access, high groundwater, contaminated soil, tight construction schedule, or just economy that helical piles could be the ideal solution. Now what?
Even smaller diameter helical piles can develop relatively high capacities, yet be installed with hand held equipment and smaller machines such as mini-excavators and skid steers.
Design professionals are becoming confident with utilizing helical piers on their retrofit foundation stabilization or repair projects.
The torque correlation method is a well-documented and accepted method for estimating or verifying helical pile capacity.
HelixPro™ - Helical Foundation Design Software for Professionals" was released on September 4, 2012 after nearly a year of design, development and programming efforts.
Design professionals rely on site-specific geotechnical investigations to provide soil strength parameters for use in foundation design.
Soil nailing is a method of earth retention that relies on a grid of individual reinforcing strands or members installed within a soil mass to create an internally stable gravity wall/retaining system.
The term "corrosion" is used to describe the degradation of a material or its properties due to reaction with its environment.
Many designers view helical foundation systems with some degree of skepticism as a fairly new technology, especially in applications such as deep foundation support for a structure.
We often receive phone calls from designers and specifiers asking whether a hollow round shaft or solid square bar helical pile would be better suited for a certain application. This appears to be a great opportunity to provide some clarity and offer our opinions and recommendations to the masses.
Supportworks, Inc. (Supportworks) is a leading manufacturer and distributor of foundation stabilization systems for new construction applications, retrofit applications, walls and retaining walls. With major dealer support offices in Omaha, Nebraska and Seymour, Connecticut, our goal is to provide the industry with innovative solutions that are appropriately designed and tested, expertly installed and dependable to perform as promised.