Anchor bolts are used to connect structural and non-structural elements to the concrete. The connection is made by assembling of different components such as anchor bolts (also named fasteners), steel plates, stiffeners.
Anchor bolts transfer different types of load: tension forces and shear forces. A connection between structural elements can be represented by a steel column attached to a reinforced concrete foundation. Whereas, a common cause of non-structural element attached to a structural one is represented by the connection between a facade system and a reinforced concrete wall.
Depending on when the anchors are installed, they can be classified into 2 distinctive categories.
1- Cast in anchors
Cast-in anchors These are the type of anchor bolts that are installed in place before pouring the concrete and are efficient in handling forces of high magnitude. The following are few varieties of the cast in anchors.
2- Post installed anchors
Post installed anchors: These are the anchor bolts that are installed into an existing concrete surface, usually by drilling. These bolts are also referred to as expansion bolts or chemical anchors, They transfer the loads to or from concrete by direct bearing or friction or both.
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