Discuss NCARB PDD Exam Topic 2 Question 18

For which of the following reasons is sheet piling used? (Check the three that apply)

AA grade beam needs support.

BRaked shoring should be created.

CA pile cap needs support.

DAn excessive slope on the sides of the excavation would be required.

EThe soil surrounding an excavation site will not support itself during or after the digging.

FThe excavation adjoins a property line and the adjacent property cannot be disturbed.

Suggested Answer: D, E, F

Sheet piling is a type of earth retention system used in excavations to prevent soil collapse. Reasons include:

D . When the natural soil slope is too steep to remain stable, sheet piling acts as a vertical barrier.

E . When soil cannot support itself during excavation, sheet piles provide lateral support.

F . When excavation is adjacent to a property line or existing structure and adjacent soil must not be disturbed.

Options A (grade beam support), B (raked shoring), and C (pile cap support) are not typical or primary uses of sheet piling.

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12 comments · newest first

Gail 1 month ago

I’d go with A too. A grade beam needs solid support.

Novella 1 month ago

Agreed, E makes sense. Also, F is important for property lines.

Wayne 1 month ago

I think E is definitely one. The soil can collapse.

Francisca 2 months ago

Yeah, E is a must if the soil is unstable!

Roosevelt 2 months ago

I disagree, I don't see how D applies here.

Felice 2 months ago

Wait, are we really using sheet piling for raked shoring?

Lorriane 2 months ago

I think A and C are also valid.

Merissa 2 months ago

Definitely E and F for sure!

Jonell 2 months ago

I vaguely recall that sheet piling can also help with adjacent properties, so option F might be correct too, but I need to double-check my notes.

Noel 3 months ago

I practiced a similar question where we discussed the importance of preventing soil collapse, so I feel confident about option E.

Kimberely 3 months ago

I think options E and F are definitely reasons for using sheet piling, but I'm a bit unsure about the others.

Olga 3 months ago

I remember studying that sheet piling is often used to support excavations, but I'm not sure which options specifically apply here.

NCARB PDD Exam - Topic 2 Question 18 Discussion