Can Corrosion Cause a Helical Pier to Fail over Time?
Yes, corrosion is a critical factor that can cause helical piers to fail over time. It is an electrochemical reaction—primarily involving moisture and steel—that leads to progressive section loss of the pier shaft.
This process impacts structural integrity in several ways:
- Reduced Load Capacity: As the steel cross-section diminishes due to rust, the pier’s ability to support design loads decreases proportionally. This can lead to differential settlement or, in severe cases, cause the pier to buckle or fail entirely.
- Environmental Acceleration: Corrosion can be accelerated by soils with low electrical resistivity (high chloride, sulfate, or acid content), persistently high moisture levels, or stray DC currents from nearby utility lines and rail systems.
- Triggering Other Failures: A weakened shaft may become more susceptible to negative skin friction, where shifting surrounding soils grip the pier and exert downward pressure that the compromised steel can no longer withstand.
To mitigate these risks, it is essential to use products that meet ICC-ES AC358 standards, which require a minimum 0.002-inch hot-dip galvanized coating. In highly aggressive environments, additional protections like cathodic protection (using sacrificial anodes) may be necessary to ensure the pier’s long-term service life.
Related FAQs
-
What are the Deck Financing Options for Homeowners in the Us?
Read More »: What are the Deck Financing Options for Homeowners in the Us?Homeowners in the United States have several deck financing options to fund their construction projects. These methods range from unsecured loans for smaller builds to secured options for more extensive projects involving advanced foundation systems like helical piers. Common financing…
-
What are the Options for Contractor Financing for New Decks?
Read More »: What are the Options for Contractor Financing for New Decks?Homeowners and contractors have several financing options for deck construction, ranging from unsecured personal loans to government-backed programs. Choosing the right method often depends on the project’s scale and the borrower’s financial profile. Common financing avenues include: Personal Loans: These…
-
What is the Difference between Push Piers and Helical Piers?
Read More »: What is the Difference between Push Piers and Helical Piers?The primary difference between push piers and helical piers lies in their mechanical principles, load transfer mechanisms, and installation methods. While both systems bypass weak surface soils to reach stable strata, they do so using different techniques: Load Transfer Mechanism:…
-
Who Offers Crawl Space Repair near Me?
Read More »: Who Offers Crawl Space Repair near Me?Helical Technology provides professional crawl space repair solutions for commercial and residential projects, specifically serving the Littleton, Colorado area and the Front Range. As a premier national distributor, they offer engineered products and a network of structural engineers to address…
-
Can Helical Piers be Used to Stabilize a Leaning or Bowing Seawall?
Read More »: Can Helical Piers be Used to Stabilize a Leaning or Bowing Seawall?Yes, helical piers are an effective solution for stabilizing leaning or bowing seawalls. These systems act as advanced earth anchors that transfer structural loads deep into competent soil, which effectively counteracts lateral soil pressures and hydrostatic forces that typically cause…