How To Set A Wedge Anchor

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Different types of concrete wedge anchors are manufactured for employ in different applications. The only differences between the types of physical wedge anchors are the material that they are fabricated from and the plating or coating that is used for improving the corrosive resistance of the steel.

Carbon Steel – the carbon steel concrete wedge anchor comes with either zinc plating for indoor applications where moisture is not present or hot-dipped galvanized coating for outdoor applications where wet may be nowadays.

Rule of Thumb:
The larger the diameter, the better the holding value.

Stainless Steel 303/304 – different manufacturers use either the 303 or 304 stainless steel for their physical wedge anchors. They are used in applications where moisture is present or where the application is submerged in h2o.
Stainless Steel 316 – the highest grade of stainless steel that physical wedge anchors are made from and are for utilise in submerged applications and where some chemicals are nowadays, such as chlorine in and effectually swimming pools.

Concrete wedge anchors are made from a single bar of steel that is threaded on i finish, and the other end is necked downward with a permanently attached clip. They are packaged with the correct-sized nut and washer and come in nine different diameters ranging from i/four in. to 1-ane/4 in. Each bore of concrete wedge ballast is available in different lengths from 1-3/four in. in the one/four in. diameter to 12-in. long in all diameters larger than i/ii in.

Read about anchor bolt tolerances at ForConstructionPros.com/12281002.

The diameter of concrete wedge ballast to use for any particular application depends on the weight of the object being fastened, on the diameter of the hole size in the object being fastened, and on whatever specifications of diameter recommended by an engineer. The rule of thumb is that the larger the bore than the improve the holding values. Concrete Fastening Systems Inc. provides a tabular array for holding values and technical specifications for wedge anchors online.

The length of physical wedge anchor to utilise is based on the thickness of the material being attached plus the embedment depth of the physical wedge anchor into the concrete. Each bore of a concrete wedge anchor has a minimum embedment depth that the anchor must be inserted into the concrete for it to obtain minimum holding values. Calculation the minimum embedment of the diameter of concrete wedge anchor being used to the thickness of the material being attached plus the thickness of the nut and washer will give the minimum length of physical wedge anchor that should exist used.

Minimum Embedment Depths by Diameter

Wedge Anchor Diameter	Minimum Embedment
3/8 in.	1 one/two in.
1/2 in.	2 i/four in.
5/8 in.	2 three/four in.
3/four in.	3 ane/iv in.
7/8 in.	iii vii/8 in.
one in.	4 1/2 in.
1 ane/4 in.	5 1/two in.

Pigsty Bore & Depth

The diameter of the pigsty to drill for a concrete wedge anchor is equal to the diameter of the concrete wedge anchor being installed. A 5/8" physical wedge anchor requires a five/viii" hole to exist drilled into the physical.

The pigsty in the physical needs to be drilled a minimum of 1/two" deeper than the physical wedge ballast will penetrate into the physical. This actress space is required to make sure that the concrete wedge anchor does non bottom out in the hole before reaching the intended embedment depth, and besides allows for whatsoever dust that may be created during the installation to fall out of the style.

Concrete Wedge Anchor Installation

With a hammer drill in the hammer mode and a carbide-tipped drill bit that meets ANSI standard B212.15 and is also the same diameter as the diameter of the concrete wedge anchor beingness installed, drill a hole in the concrete.
Drill the depth of the pigsty a minimum of 1/two" deeper than concrete wedge anchor volition penetrate, or 1/2" deeper than the minimum depth of embedment.
Using a wire brush, compressed air or vacuum, clean the hole of all droppings and dust.
Thread the nut onto the threaded stop of the concrete wedge anchor so that the top of the nut is flush with the acme of the concrete wedge ballast. This volition protect the threads from damage during installation.
Insert concrete wedge ballast, clipped terminate kickoff, into the predrilled hole in the physical. If the physical wedge anchor is existence installed through a hole in a fixture, make certain that the hole bore is larger than the diameter of the physical wedge anchor existence used.
With a hammer, strike the nutted end of the physical wedge ballast until a minimum of vi threads is below the surface of the concrete or below the surface of the detail beingness attached.
Using your fingers, tighten the nut.
Take a wrench and plough the nut clockwise 2 to 3 turns or until the proper torque values for the diameter of the wedge anchor being used are obtained.

Virtually the author

Bob Carlisle has been president of Concrete Fastening Systems, Inc. for 29 years, and has been involved in the concrete anchor business since 1981.

Source: https://www.forconstructionpros.com/concrete/equipment-products/concrete-anchoring/article/21440145/concrete-fasteners-inc-concrete-fastening-systems-inc-how-to-install-concrete-wedge-anchors