How to Install a Wedge AnchorInstalling a wedge anchor is simple when the proper procedures are followed. - Drill a hole the same diameter as the anchor. For example, a 1/2" wedge anchor requires a 1/2" masonry drill bit.
- Drill the hole approximately 1/2 inch deeper than the required embedment depth.
- Remove all dust and debris using compressed air, a wire brush, or vacuum.
- Insert the anchor through the fixture and tap it into the hole until the washer and nut are seated.
- Tighten the nut to the manufacturer's recommended torque specification.
Installation Tip:
When installing into a slab-on-grade, drilling completely through the slab makes future removal much easier. Simply remove the nut and washer, then drive the anchor below the surface if the fixture ever needs to be removed. Proper Embedment and Edge DistanceCorrect embedment depth is critical for achieving the anchor's published holding values. Although requirements vary by manufacturer and anchor diameter, a common recommendation is an embedment depth of approximately four times the anchor diameter. Always verify the manufacturer's specifications for your specific anchor. Edge distance is equally important. Installing a wedge anchor too close to the edge of a slab can cause the concrete to crack or break away under load. If you're fastening into cracked concrete, make sure the wedge anchor has been tested and approved for cracked concrete applications. Advantages of Wedge Anchors- Excellent holding power in solid concrete
- Fast, easy installation
- Cost-effective fastening solution
- Available in zinc, mechanical galvanized, 304 stainless steel and 316 stainless steel
- Uses the same diameter drill bit as the anchor
- Installs directly through the fixture
- Includes nut and washer
- Proven performance with decades of successful use
Limitations of Wedge Anchors- Designed for solid concrete only
- Cannot be used in concrete block or hollow masonry
- More difficult to remove than concrete screw anchors
- Requires proper edge spacing
- Permanent expansion design makes relocation difficult
Alternatives to Wedge AnchorsIf your application requires a different fastening solution, consider these alternatives: Choosing the Right Wedge AnchorSelecting the correct wedge anchor depends on the concrete thickness, fixture thickness, required embedment depth, load requirements, and exposure to moisture or corrosive environments. Construction Fastening Systems stocks a complete selection of zinc plated, mechanical galvanized, 304 stainless steel, and 316 stainless steel wedge anchors in numerous diameters and lengths to meet virtually any concrete fastening application.
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