An Anchor fastener used to attach objects or structures to concrete. There are several varieties of anchor bolts, consisting of designs that area unit largely proprietary to the producing firms.

1. Anchor Fastener
Anchor
An Anchor fastener used to attach objects or
structures to concrete. There are several varieties of anchor bolts, consisting of designs that area
unit largely proprietary to the producing firms. All consist of a threaded finish, to which a nut and
washer will be connected for the external load.Anchor bolts are extensively used on all varieties of
comes, from standard buildings to dams and nuclear power plants.They can even be accustomed
firmly affix implant plates to a concrete foundation once used with a steel part.The simplest anchor
bolt could be a cast-in-place anchor. As seen in the figure, most designs consist of a customary bolt
with a polygonal shape head, which is forged in the wet concrete before it sets. There are different
styles, some consisting of a bent bolt with a hook on the tip, or some other kind of bending. Cast-in-

2. place anchor bolts are the strongest kind of fastener, but the casting is troublesome, and they are
sometimes solely used for significant machines mounted on poured concrete floors.
Anchor Fastener is Another use of this anchor bolt is to connect the concrete foundation of a
building to its wall. With this, the building is more resistant to earthquakes. Currently there area unit
many devices to assist in holding and in inserting anchor bolt to line within the concrete. These
devices are largely created from composite plastic.Wedge anchors, also identified as growth bolts
and growth anchors, secure themselves using a mechanical wedging result at the tip of the fastener.
There are 3 basic designs of wedge anchors: totally rib, partial threaded and the robust wedge
anchor.As shown in the figure, tightening the bolt results in a wedge being driven up against a
sleeve. This jams the end of the bolt, and provides the strength. Many completely different makers
give a variation on this theme, usually relying on the condition of the concrete, and the style of load.
If a mechanical anchor fails, it is usually within the type of birth control a wedge of concrete, and for
this reason, proper style appearance at the depth of embedment and ensures that the bolts area unit
not spaced too closely.A specialized type of the anchor bolt is that the rock bolt, used in rock
excavations. In many elements of the world seismal anchors area unit another specialised subject.