Consider a Steep Highway Cut Made by Removing Slightly Weathered

question 28

Multiple Choice

Consider a steep highway cut made by removing slightly weathered to fresh, fractured, granite bedrock. Which of the following situations is most stable against rockslides?

• A) three sets of closely spaced angular fractures
• B) one set of widely spaced, sub- horizontal fractures
• C) two sets of fractures, one widely spaced and sub- horizontal, the other inclined towards the highway
• D) two sets of fractures, one inclined toward the road and the other into the slope