Types of Metal Carport Anchors & Their Importance

Types of Metal Carport Anchors and Their Importance

Metal and steel buildings are built to a stand well against a specific amount of wind speed. In areas that are subject to high winds, built quality should be taken in securing the structure to the ground very well. Depending on the type of structure, the building’s use, and the type of foundation or surface below the building, there are different kinds of anchors that are used to make building robust against wind. These include rebar anchors, concrete anchors, asphalt anchors, and auger anchors that are also known as mobile home anchors each anchor have its significant identity. Here is an explanation of the different types of anchors and their appropriate uses.

Rebar Anchors

Rebar anchors are used to secure a metal building to the ground in areas with low winds and that have strong, sturdy soil. Rebar anchors are one-half inch wide by 32 inches long. They are made from the same type of material that is used to make the metal rods that are placed inside concrete to provide structural soundness.

During installation of a metal building, the base rail is drilled with holes and then the rebar anchors are inserted into these holes and hammered into the ground. Stronger auger-style anchors are recommended in areas with high winds and if the soil is soft or if it has to be disturbed (leveled) for the building installation.

Concrete Anchors

Concrete anchors are used to secure a metal building to a concrete foundation. This type of anchor is very strong and effective in areas with high winds. Concrete anchors are expansion bolts. They are installed by drilling holes in the base rail of the metal building and then down into the concrete to the depth of about three to four inches. Then nuts with locking washers are placed on the ends of the bolts and tightened down.

The process of tightening the bolts causes them to expand in the drilled holes. This pressure on the walls of the holes makes it very difficult for them to be dislodged. The length of the concrete anchors that are used depends on the thickness of the concrete foundation.

Asphalt Anchors

Asphalt requires a special kind of anchor. Expansion bolts like those used as concrete anchors are not effective with asphalt because, when tightened down, the expansion can cause cracks to form in the softer asphalt. To avoid causing any cracks in the asphalt, an asphalt anchor has either a screw-like thread design or strong barbs that capture the asphalt, like a fish hook, after the anchor is inserted.

These specially-designed asphalt anchors should only be used for asphalt installations and are not suitable for use in concrete or soil. They have the unique design of a loop handle on the top. This loop is used by placing a metal rod or strong tool handle through it to be able to turn them as they go down into the asphalt. Then cables or straps are used to attach to the base rail to hold it securely in place.

Auger Anchors or Mobile Home Anchors

Auger anchors, which are also called mobile home anchors, are used to secure a metal building directly to the ground. The soil needs to be leveled prior to the installation. A pilot hole is first made in the soil at the place where an auger anchor is to be installed. Then, by using a metal rod or strong tool handle, placed through the loop at the top of the auger anchor, it is turned to go down into the ground.

Proper installation is to turn the auger anchor until the top of it is about four inches from the ground level and then use cables or straps to attach to the base rail to hold it securely in place. Most strong installations use an auger anchor about one for every two linear feet of the base rail.

For best results, use the correct type of anchors to install a metal building properly. Over-engineering of using more augers than required by minimal needs is warranted if there is a chance of high winds or gusting winds in the area. For proper anchoring, it is better to be stronger than required. Consult with the steel building installation experts and do a site inspection together to make a good decision about the types of anchors to use and how many should be used for a secure installation of a metal building, such as a carport.