KNOWLEDGE TEST - CPCCCO2013 CARRY OUT CONCRETING TO SIMPLE FORMS Answer each of the questions below. You need to answer all questions correctly to receive a satisfactory outcome for this task. 1. Briefly describe the following simple forms of concrete. Beam thickeners Channels Concrete aprons Post holes Pathways Garden edges 2. Explain the reason why concrete should be vibrated. 3. Explain what can happen if concrete is over vibrated. 4. Briefly describe each of the following types of concrete finishes, and how you perform them. Broom finish Trowel finish Machine-trowelled finish Wood-float finish 5. Briefly describe each of the following types of concrete materials, and how they are used. Bar chairs Braces Edge boards Pegs/pins Reinforcement mesh Spacers Reinforcing bars Vapour barriers