Safety Concerns with Anchor Bolts in Concrete
Anchor bolts in concrete work as effective fasteners, but only when they are installed properly. The main reason why anchor bolts in concrete fail is that they are not properly installed, not properly set, and not properly mounted. Anchor bolts rely on friction with the concrete to produce a strong and firm hold. When the bolt does not have a strong bond with the concrete, this can lead to serious injuries or damage, especially if the object that has been fastened is mounted on the ceiling or on the side of the wall. Here are some common safety concerns with anchor bolts in concrete.
1. Improper Installation
Improper installation can cause serious issues especially if the anchors lose their bond with the concrete and cause the object mounted to loose stability. Therefore, it is just right to follow installation instructions carefully. Always follow the required diameter and depth when drilling holes for the anchors. If the hole is too wide or too deep, it may cause the anchor to come loose easily.
One way to ensure that the anchor remains firmly in place is to apply chemical anchors like epoxy. Epoxy strengthens the hold of anchor bolts and secures even loose anchors in place.
2. Using Improper Type of Anchor Bolt
Anchor bolts are designed differently for different types of uses. The most common anchor bolt used in concrete is the cast-in-place bolt. This bolt has a head that needs to be embedded in the concrete, allowing the threads to stick out of the concrete structure. This type of bolt is mainly used in building foundations and not for any other reason. Take note that different types of anchors are used to fasten pipes, cabinets, and other objects to concrete. Therefore, it is best to determine for what type of purpose the anchor bolt is to be used before using them as fasteners. If not, the fastening system will not work.
3. Not Following Safety Standards
Like any other project, using anchor bolts as concrete fasteners should follow safety standards. This is true especially when dealing with concrete foundations for tall or huge buildings. Buildings rely on the strength of the foundation in order to withstand natural disasters or calamities such as hurricanes and earthquakes. When anchor bolts are installed, they should be done in conformity to set standards. When installing anchor bolts in concrete foundations, they should follow the correct spacing, embedment, and allowable load. Anchor bolt manufacturers provide this information in their product description, user manuals and websites.
As an example, the recommended embedment for an anchor bolt that is one inch in diameter is 7-inches. Therefore, when these anchors are set in place, the stem of the anchor should be embedded in the concrete 7 inches deep.
Spacing should also be followed correctly in order to provide maximum strength. The rule is to have the anchor bolts ten anchor diameters from each other. Therefore, if the anchor bolt is 1-inch in diameter, they should be spaced 10-inches apart.