Question-Answer:

Which one of the following coffer dams is suitable for small heights?

• (a) Cantilever sheet pile coffer dam 
• (b) Braced coffer dam 
• (c) Embankment protected coffer dam 
• (d) Double wall coffer dam

Ans. (a)
A coffer dam may be made of earth materials, timber or steel sheet piling. Cantilever sheet pile coffer dams are suitable for small heights, since these are susceptible to large leakage and flood damage.

Question-Answer civil engineering study