Podcast
Questions and Answers
What does the term 'grade' refer to in the context of highways?
What does the term 'grade' refer to in the context of highways?
- The color of the road surface
- The width of the highway lanes
- The amount of traffic on the highway
- The incline or slope of the highway (correct)
Which factor significantly influences the selection of a highway location?
Which factor significantly influences the selection of a highway location?
- The color of the soil
- The terrain of the land (correct)
- The availability of restaurants
- The proximity to airports
What is the primary earthwork factor considered when laying a grade line?
What is the primary earthwork factor considered when laying a grade line?
- The availability of construction workers
- The amount of earthwork needed (correct)
- The cost of asphalt
- The number of trees to be cut down
How can the amount of earthwork be reduced when laying a grade line?
How can the amount of earthwork be reduced when laying a grade line?
What balance should be considered in laying the grade line?
What balance should be considered in laying the grade line?
Flashcards
Highway Grade
Highway Grade
The incline or slope of a highway, often expressed as a percentage.
Terrain
Terrain
The contour and features of the land's surface which impacts road construction.
Earthwork
Earthwork
The amount of digging and filling required to build a road at the desired grade.
Cut and Fill Balance
Cut and Fill Balance
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Level road surface
Level road surface
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Study Notes
- The term "grade" is used in several different ways concerning roads and highways.
- The grade of a highway measures its incline or slope.
- The terrain affects laying the grade line, it significantly influences the selection of a highway location.
- The amount of earthwork needed for the chosen grade line is the primary factor considered by designers for laying it.
- One method to reduce the amount of earthwork is to set the grade line as close as possible to the natural ground level.
- Notice the balance between the excavated volume and the volume of embankment.
- Consider the existence of fixed points, high enough above in laying the grade line.
- The water level should be considered in laying the grade line.
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Description
Highway grade refers to the slope or incline of a road. Terrain is a key factor in determining highway location and grade line. Balancing excavated volume and embankment volume helps minimize earthwork. Fixed points and water levels also need consideration.
