Understanding Helical Screws vs Traditional Concrete Piers for Your Construction Project

When it comes to supporting structures, choosing the right foundation method can make a big difference in cost, time, and durability. Two popular options for foundation support are helical screws and traditional concrete piers. Both serve the same purpose but differ significantly in installation, application, and overall impact on your construction project. This post explains what helical screws are, how they compare to concrete piers, and why they might be the right choice for your next build.

Helical screw foundation installation in progress

What Are Helical Screws?

Helical screws, also known as helical piles or screw piles, are steel shafts with one or more helical plates welded to the shaft. They look like giant screws that are twisted into the ground to provide deep foundation support. The helical plates help anchor the screw firmly into the soil, transferring the load from the structure above to stable soil layers below.

These screws come in various sizes and load capacities, making them versatile for different types of projects. They are often galvanized to resist corrosion and ensure long-lasting performance.

How Helical Screws Are Installed

Installation of helical screws is straightforward and fast. A hydraulic motor attached to an excavator or skid steer rotates the screw into the ground. The process requires minimal excavation and no concrete mixing or curing. Installation depth depends on soil conditions and load requirements but typically ranges from a few feet to over 20 feet.

Because the screws are installed quickly and with little disturbance to the site, they are ideal for projects where speed and minimal disruption are priorities.

What Are Traditional Concrete Piers?

Concrete piers are cylindrical columns poured into drilled holes in the ground. They support structures by transferring loads to deeper, stable soil or bedrock. The process involves drilling or digging holes, placing steel reinforcement bars (rebar), and pouring concrete. The concrete must then cure for several days to reach full strength before construction can continue.

Concrete piers have been a trusted foundation method for decades, especially for heavy structures like decks, porches, and buildings.

Installation Process for Concrete Piers

Installing concrete piers requires several steps:

• Drilling or digging holes to the required depth

• Placing rebar cages for reinforcement

• Pouring concrete into the holes

• Allowing the concrete to cure, which can take 3 to 7 days depending on conditions

  
  

This process can be time-consuming and disruptive, especially in tight or sensitive sites.

Common Projects for Helical Screws and Concrete Piers

Both foundation types are used for similar projects, but their suitability varies:

Helical screws are commonly used for:

• Decks and patios

• Modular and manufactured homes

• Boardwalks and piers over water

• Temporary structures and additions

• Areas with poor soil conditions or limited access

  
  

Concrete piers are commonly used for:

• Residential foundations

• Heavy structural supports

• Retaining walls

• Large commercial buildings

  
  

The choice depends on project size, soil conditions, timeline, and budget.

A newly installed wooden deck basking in the warmth of the setting sun, surrounded by lush greenery.

Cost Comparison Between Helical Screws and Concrete Piers

Cost is a major factor when choosing between these foundation options. For a standard 3-inch diameter pier designed to support up to 30,000 pounds, both a concrete pier and a helical screw typically cost between $350 and $650 under normal conditions. This price range includes materials and installation.

While the upfront costs are similar, helical screws often save money in other ways:

• Faster installation reduces labor costs

• No curing time means construction can proceed immediately

• Less site disruption lowers cleanup and restoration expenses

  
  

Concrete piers may require additional equipment and time, especially if soil conditions are challenging or if curing delays the project schedule.

Advantages of Helical Screws Over Concrete Piers

Helical screws offer several benefits that make them attractive for many projects:

• Speed: Installation can be completed in hours rather than days.

• Minimal site disturbance: No large holes or concrete trucks needed.

• Immediate load-bearing: No waiting for concrete to cure.

• Versatility: Can be installed in tight spaces and difficult soils.

• Environmentally friendly: Less soil displacement and waste.

  
  

These advantages often translate into faster project completion and fewer headaches on site.

When to Choose Helical Screws

If your project requires quick turnaround, minimal site impact, or is located in an area with poor soil or limited access, helical screws are an excellent choice. They work well for decks, small buildings, and temporary structures. They also provide a reliable foundation for modular homes and additions.

For heavy commercial buildings or projects requiring deep, reinforced concrete foundations, traditional concrete piers may still be preferred.

Next Steps for Your Project

Choosing the right foundation support is crucial for the safety and longevity of your structure. If you want to explore whether helical screws are the right solution for your project, contact Jake’s Construction Services. Their experienced team can assess your site, discuss your needs, and recommend the best foundation option to fit your budget and timeline.

Building strong starts with a solid foundation. Reach out today to get started.