Haul Roads

Question 1

poor hauls roads cause:

Answer 1

• low truck speed

- higher tyre wear, truck costs

Question 2

design consideration

Answer 2

• gradient
• traffic
• curves, intersection

Question 3

drainage

Answer 3

• slope across road for better drainage
• crown: each side slopes down from centre
• cross-slope: slopes to one side

Question 4

switchbacks

Answer 4

and curves, avoid if possible - use largest radius

Question 5

superelevation (camber)

Answer 5

outside of curve is higher than inside

Question 6

dust

Answer 6

amount of dust depends on climate, rainfall, temp and wind