How to Install and Set Concrete Anchors

There is a wide variety of concrete anchors in the market and it is important to take note the special features of each to come up with the correct one. Although the anchors are designed for different purposes, they each follow common installation procedures.

Tools and Materials Needed:

  • Concrete anchors
  • Hole brush with wire bristles
  • Compressed air
  • Carbide bit
  • Drill

Step 1 – Choose the Proper Concrete Anchor

Consider the weight to be supported, the angle or installation, and whether the installation is to be done outside or inside a building. Do some extensive research on the Internet and find out if the features of an anchor meet the specifications for a particular project. Anchor types include strike anchors, wedge anchors, drop-in anchors, Tapcon anchors, etc. Print a picture of the concrete anchor of choice and proceed to the supply store. Discuss your needs to the store clerk even if you think you already know the right type of anchors for your project. He can give you more information about your chosen concrete anchors and how to install them.

Step 2 – Drill the Anchor Holes

For strike anchors and other related types, drill a hole with the same diameter and at least 1/4 inches deeper than the length of the fastener. Wedge and sleeve anchors should also have the same diameter, but at least 1/2 inches deeper than the length. Tapcon types should have holes slightly smaller in size and with a depth 1/2 inch longer than the length of the fasteners. The fasteners should have proper drilling instructions on the product label so check out this information first to ensure that the hole is drilled with the correct diameter and depth.

Step 3 – Clean the Hole

Insert a hole brush into the drilled hole to remove stuck debris and dust. Twist the brush from side to side and pull it out to remove trapped debris. Clean leftover dust with compressed air. Use a dust mask to avoid inhaling the dust particles, especially when cleaning several holes.

Step 4 – Install the Anchor

Assemble the anchor properly as per manufacturer’s instructions. Strike anchors require the insertion of a nail through a washer and into the fastener itself before installation. Wedge anchors require placing a nut on the end of the fastener to protect it the threads during insertion. Some types are already preassembled. Determine which side of the fastener goes into the hole first.

Insert the fastener through the object to be installed and into the drilled hole. Use a hammer to drive the fastener into place until the head is flush with the surface of the object. Some fasteners can be pushed easily with the hand without using a hammer. Hand-tighten the fastener until it is set firmly in place. For other types of fasteners, the nut or washer should be tight against the surface of the object to be installed. Turn the nut clockwise with a wrench until it is tightly secured.

Install the other fasteners and double check on every installation. After every anchor is in place, find out if the object fastened is secured steadily onto the concrete surface.