Molder and Caster how-to

How to Pour and Vibrate a Precast Form

Good pours avoid voids.

Updated By the Career Education Institute Curriculum Team
Quick answer

Good pours avoid voids. In short: check; test; pour, then complete the remaining steps below.

Step by step

  1. Check the form.

  2. Test slump.

  3. Pour in layers.

  4. Vibrate each layer.

  5. Don’t over-vibrate.

  6. Finish the surface.

Safety reminders for molder and casters

  • Wear respirators for silica
  • Follow crane signals
  • Lift safely
  • Wear PPE

Precast · Release agent · Rebar · Slump · Vibration · Stripping: see the full molder and caster glossary.

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