3.1. Basic Guidelines

Try these first

1. 1.

   What is the maximum drop height for placing concrete?

   Hint

   Think about how height affects the mixture.

2. 2.

   Why is it important to place concrete close to its final position?

   Hint

   Consider what happens if concrete is moved too much.

3. 3.

   What is the recommended maximum drop height when placing concrete?

   • 1 meter
   • 1.5 meters
   • 2 meters

   Hint

   Remember the guidelines for dropping heights.

4. 4.

   True or False: Concrete should be placed within 30 minutes of mixing.

   • True
   • False

   Hint

   Think about the time-sensitive nature of concrete.

5. 5.

   You are at a site where you accidentally dropped concrete from 2 meters. Predict what issues may arise and how you can mitigate them in future placements.

   Hint

   Think about the physical characteristics of concrete when dropped.

6. 6.

   If you have 45 minutes to pour a large footing, how can you ensure you are within the recommended timing for placement?

   Hint

   Plan your workforce and strategy carefully to minimize delays.