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Tag Archives: helical piers

Helical Piers Technology: How Helical Tiebacks Work

Helical piers are so important we are revisiting this blog topic with some new information.

When your home settles, there is an engineered repair method for home foundation support. Most home foundations will settle after several years or decades depending on the weather, soil or quality of workmanship.

helical piers used in construction

The helical pier technology underpins a settling structure by raising it and supporting it. If the house is heavy, piers will be closely spaced. Load-bearing walls are heavier to underpin, too.

Also, the placement of the helical piers depends on the weight of the home, home foundation condition and the type of pier. Your home foundation repair contractor will consult you on the proper helical pier to use.

One method of helical piers technology is known as “helical tie backs”. Tiebacks anchor or support basement walls that are bowing, leaning or unsound.

Helical tiebacks are installed like this:

  1. A hole is drilled into the basement wall and a helical shaft is inserted.
  2. Then a helical screw anchor is installed.
  3. After finding the correct bearing depth, the wall plate is installed.
  4. The plate is tightened against the helical anchor bringing the wall back to its original location.
  5. The soil is then backfilled to the basement wall.

Helical tiebacks are an effective method of supporting damaged walls. They do not support a home foundation that is settling. You will need to work with a home foundation engineer to correct that. (We covered that topic in this blog.)

However, helical tiebacks are usually installed quickly and efficiently. They are load tested to verify the capacity and they can be loaded immediately after being installed. If your soil is sinking or unstable, helical tiebacks can also be installed.

Helical pier technology has many advantages and methods, more of which we will cover in future blogs. Consult your licensed home foundation engineer for the best method for your home foundation.

M Taylor Enterprise installs both helical piers and helical tiebacks. Call our experienced engineers for a consultation. We will analyze your home foundation issue and efficiently repair it. Call us for a consultation at (301) 649-3406 or email us at matt@mtaylorenterprise.com. We serve the Montgomery County, MD area.

Your Home’s Anchor: Helical Piers and How they Work

Boats have anchors.

Cars have brakes.

And, homes have helical piers.

A helical pier is, according to www.builderonline.com, is a:

A helical pier is a manufactured steel foundation pin that is driven into the soil to a depth below frostline using hydraulic machinery. Helical piers are primarily used in heavy commercial work, but they’re also well-suited for backyard decks, additions, and foundation repairs.

Helical piers which are also known as “anchors”, screwpiles or piles. They are foundation solutions that are utilized to new foundations or repair existing foundations. They are not difficult to install and are mainly used when soil conditions prevent standard foundation  repairs.

Helical piers are made by using steel shafts with helical shafts and are installed deep in the foundation underpinning elements constructed using steel shafts with helical flights. The shafts move to the deep below the foundation by  twisting them into the foundation soil. Torque is monitored to estimate the pile capacity.

Piers, which are galvanized steel, have a seven foot shaft with a helical bearing plate welded to the end and a cap on top. Length depends on the condition of the soil. Smaller piers are used heavy, rock-filled soils and larger piers for softer, clay soils. The helical anchor/pile is 3” and welded to a central steel shaft. The load is moved from the shaft to the soil using bearing plates.

So, when do you need to install a helical pier? Here are five reasons to install a helical pier:

  1. They cause minimal damage to lawn and vegetation.
  2. Your home’s foundation experiences minimal trauma and there is no     damage to it.
  3. Installation is completed in a small space.
  4. They can be installed in any weather.
  5. They are installed quickly with minimal traffic on your lawn.
  6. Can be installed to a any known load-bearing capacity.

M Taylor Enterprise  has used helical piers in construction and foundation projects throughout Montgomery County Maryland. Projects have included tiebacks for walls that were bowing and leaning, new construction, old construction, sloped areas and also to help add lift for sunken concrete and stone slabs.

Hydraulic motors are used to quickly and safely install these supports and our team has extensive experience utilizing this effective source of foundation repair support.

Contact us at (301) 649-3406 or at matt@mtaylorenterprise.com if you think helical piers may be an answer to your particular project. Advice is always free.