If the berm is too low on the downhill side, what is a likely consequence?

• A. Rolling material could cross the handline.
• B. The trench will collapse.
• C. The crew will be unable to communicate.
• D. There will be increased noise.

Answer: (A)

The barrier on the downhill side is meant to stop rolling material from crossing the handline. When the berm is too low, gravity will carry soil, rocks, and embers downhill and over the top, allowing material to cross the handline and reach the other side. This creates a real safety hazard for the crew by increasing the chance of injuries and may also compromise control of the line if debris or fire starts to cross. To prevent this, berms on the downhill side must be high enough to contain rolling material and protect the safety line.