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How to Manage your Dirt and Gravel Road


Quiz Questions

1.

Over time many roads deteriorate in variety of reasons. Which one of the following can be a reason for deterioration

poor construction,
improper maintenance,
excessive weather events,
heavy traffic loads, and others.
All of the above
2. As shown in Figure 3, A sinuous road __________________ a straight path
Is not as good as
Can be better than
3. A road that follows close to a stream
Will never erode
Will erode over time
4.

The ditch outlets
Need to dissipate and disperse runoff flows
Does not need to dissipate and disperse runoff flows
5. Ditches are functional as soon as they are constructed so immediate stabilization is critical. During construction the ditches should be seeded, mulched and matted as soon as possible, as shown in Fig 7. Temporary matting that is staked in place is important to prevent mulch and seed washing. In some cases adding rock check dams will help slow runoff.
True
False
6. In a dirt road the crown height should be at least ______________ higher than the shoulder
6 inches
10 inches
12 inches
7. An erosion down the roadbed (such as Fig. 10) occurs when ____________________ and thereby a flat road is created; or when the ditches are obstructed or non-existent and the runoff then create a u-shaped road.
The crown is lost
A heavy trucks slam on the break
8. Lateral erosion (fig. 11) across the roadbed occurs at low spots in the road or where a ditch or cross culvert has been clogged with debris.
True
False
9.

Potholes are holes in the roadbed caused by poor drainage and traffic (fig. 12). Minor holes are isolated shallow depressions. Major holes are widespread and deeper than

6 inches
10 inches
10. Which one of the followings are the main functions involved with maintaining road surface.
Blading and Smoothing to remove high spots and redistribute materials. Blading and Smoothing is an annual task for the spring to clear accumulated materials left by the snowplows.
Grading and Reshaping repairs the road shape and improves road drainage. Grading and Reshaping is a repair task performed every couple of years to maintain the crown of the road.
Adding Materials to resurface the roadbed or stabilizing gravel with binding agents for dust control and strength. Adding Materials can be annual or as needed depending on the quality of the base materials, traffic and weather.
All of the above

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