4.2.2. Floating

Try these first

1. 1.

   What is the primary purpose of a surface vibrator?

   Hint

   Think about its function in construction.

2. 2.

   What is one condition where internal vibrators cannot be used?

   Hint

   Consider physical constraints.

3. 3.

   What is the range of vibrations per minute for surface vibrators?

   • 3,000 - 6,000
   • 5,000 - 10,000
   • 1,000 - 2,000

   Hint

   Recall the frequencies discussed in the session.

4. 4.

   True or False: Surface vibrators are more effective than internal vibrators.

   • True
   • False

   Hint

   Think about the effects of direct vs indirect application.

5. 5.

   You are tasked with constructing a floor slab that is 200 mm thick with high workability concrete. Discuss the potential issues you might encounter using surface vibrators.

   Hint

   Reflect on the maximum recommended depth for surface vibrators.

6. 6.

   Explain how you would determine the appropriate type of vibrator to use for a construction project with a mix of different concrete consistencies.

   Hint

   Think about the factors influencing the choice between internal and surface vibrators.