AVCN CĐ UNIT 5

Road design is the __________design process which begins with topographic surveys.

• physical

• scientific

• geometric

• temporary

There are twelve __________ in the design process.

• conditions

• steps

• movements

• classes

The load-carrying capacity of roads must be adequately designed or properly constructed in areas where seasonal __________ and thawing occur.

• moving

• coming

• traveling

• freezing

Road selection and design depend on the sub-grade __________which requires adequate drainage and proper load distribution by the surface and base courses.

• stability

• ability

• capacity

• mobility

Drawing the proposed __________ on the topographic survey is the first step in the design process.

• slope

• curve

• centerline

• pothole

In most good-quality topographic surveys, the __________ needs to be clearly described with a minimum 5-foot contour interval.

• alignment

• structure

• surface

• terrain

Plotting new__________on the plan and profile in those locations should be done before designing horizontal and vertical curves for all tangent intersections.

• tangents

• shapes

• circles

• curves

The engineer must determine the best vertical and horizontal__________of the facility concerned before building a road.

• sides

• alignments

• directions

• orientations

The completed design must meet the requirements for the given load class and allow safe and efficient traffic __________.

• light

• control

• movement

• jam

Surface and __________of sufficient thickness and quality to spread the wheel loads over the sub–grade are necessary.

• cut slope

• base course

• compound

• contour