Imagine a section of highway with a large outcrop of fractured rock that poses a serious rockfall hazard. Which of the following engineering controls would be the best choice for minimizing the chance of large rocks falling onto the roadway?
A. build a retaining wall
B. control the flow of water
C. cover the slope with vegetation
D. install a mesh fence
E. install rock bolts
Answer: E
You might also like to view...
Proven reserves of fossil fuels are those demonstrable to be economically recoverable.
Answer the following statement true (T) or false (F)
A world map drawn so that the size of each country is the reflection of its population rather than its size is called
A) a Mercator projection. B) a standard land-area map. C) a conic projection. D) a cartogram.
Autotrophic ____________ are single-celled with two whiplike projections called ____________that allow the
organism to move forward and rotate in the water. Fill in the blank(s) with the appropriate word(s).
Which of the following is determined by measuring the amplitude of waves recorded from an earthquake?
A) focus or hypocenter B) intensity C) epicenter D) magnitude