How do I Install a C Channel Joist to Cinder Block Walls?

Written by geoffrey noonan
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How do I Install a C Channel Joist to Cinder Block Walls?
Metal joists come in all sizes. (immeuble en construction image by Jerome Dancette from

Quality construction materials used at the start of a project will ensure a long lasting, maintenance-free product. Steel framing is one example of starting right because it guarantees that joists, studs and tracks are straight. Also, termites and wood rot will not attack steel framing. Install a C channel joist to breeze block walls and the end result will be a stable, disaster-resistant frame that will last for years.

Skill level:
Moderately Challenging

Things you need

  • Safety glasses
  • Hammer drill
  • 3/8 inch steel drill bit
  • 3/8 inch masonry drill bit
  • 2 ladders
  • Powder actuated fastening system
  • Laser level
  • 1 1/2-inch pins
  • Yellow or green charges
  • Hammer
  • Wrench
  • 3/8-inch expanding anchors

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  1. 1

    Place the ladders at either end of the wall where the joist will go. Prepare the laser so that it is giving you a clear red line at the underside of where the joist will be mounted. Hold the joist in place with the help of another person.

  2. 2

    Drive a 1 1/2-inch pin through the steel and concrete block using the powder-actuated fastening system. Move your ladder to the middle of the joist and drive another pin through. Repeat at the opposite end of the joist.

  3. 3

    Drill a 3/8-inch hole through the metal joist every 16 inches using a hammer drill. Change the bit to a 3/8-inch masonry bit and set the drill on "Hammer." Expand the holes you've just drilled to a depth of 3 inches.

  4. 4

    Hammer all the 3/8-inch expanding anchors in place. Tighten up all the anchors with a wrench.

Tips and warnings

  • Wear safety goggles when driving the pins through the steel.

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