Piling System Quiz

The choice of piling techniques depends on the following factors EXCEPT...

• Soil conditions

• Load capacity

• Environmental constraints

• Types of pile material

Displacement piles are commonly used in .......... soil

• Gravel

• Hard clay

• Cohesive

• Compacted sand

The key difference with bored piles compared to driven piles is that bored piles involve the removal and replacement of soil during installation, while driven piles displace the soil as they are hammered into the ground. True or False?

• True

• False

What is the purpose of a permanent casing for Driven / Cast In-Situ Piles?

• Consolidate the subsoil around the pile casing
  

• Protect the concrete cast inside the lining against

  weak strata of subsoil that might otherwise fall into the

  pile excavation
  

• Protects the concrete against contamination

• All of the above

• None of the above

What is the main purpose of composite piles?

• To overcome environmental constraint

• To overcome problems resulting from particular site or ground conditions

• To minimize the cost

• To maximize the pile strength

• This method is suitable where piling is being carried out in close proximity to existing building or where vibration and/or noise is restricted. What is this piling technique?

• Displacement

• Replacement

It is difficult to monitor the quality of Rotary Bored Piles. True of false?

• True

• False

Continuous boards inserted into ground as earth retaining structure, support earth pressure, and to keep water out of an excavation. This statement is referring to which piling technique?

• Rotary bored pile

• Percussion bored pile

• Displacement - precast pile

• Sheet pile

The purpose of pile testing are as follows, EXCEPT

• To ensure compliance

• To check the pile integrity

• To introduce variations in pile lengths and diameters

• To ensure overall safety of the structure

• This test is the most expensive and time consuming to perform from the standpoint of setup requirements. Which test is this?

• Anchor

• Kentledge

• Dynamic load test

• Reference beam