2.3. Pre-stressing Method

Try these first

1. 1.

   What is the purpose of pre-stressing in concrete piles?

   Hint

   Think about what internal stresses can do.

2. 2.

   List one advantage of using bentonite slurry in piling.

   Hint

   Consider what happens during drilling.

3. 3.

   What is the main benefit of pre-stressing concrete piles?

   • Increased load-bearing capacity
   • Lower cost
   • Simplified handling

   Hint

   Think about the role of internal stresses.

4. 4.

   True or False: Pre-tensioning is applied after concrete is cast.

   • True
   • False

   Hint

   Consider the order of operations.

5. 5.

   You are tasked with designing a pre-stressed concrete pile for a bridge. Describe the steps you would take to assess the appropriate length and load-bearing capacity necessary.

   Hint

   Think about each type of soil and how it responds to loads.

6. 6.

   Job conditions demand that you extend the length of pre-cast concrete piles beyond the normal limit of 15 meters. Explain how pre-stressing techniques could allow for this change.

   Hint

   Consider the structural dynamics involved in loading.