1. Highway functional classifications include arterial, collector, and local road, respectively for urban and rural areas. 2. Single unit truck is usually used as the design vehicle for rural highways, such as arterial, collector, and local roads. 3. Both cross slope (crowned shape) and superelevation are used in highway design with the purse of facilitating drainage.
1. Highway functional classifications include arterial, collector, and local road, respectively for urban and rural areas. 2. Single unit truck is usually used as the design vehicle for rural highways, such as arterial, collector, and local roads. 3. Both cross slope (crowned shape) and superelevation are used in highway design with the purse of facilitating drainage.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:1. Highway functional classifications include arterial, collector, and local road, respectively for
urban and rural areas.
2. Single unit truck is usually used as the design vehicle for rural highways, such as arterial,
collector, and local roads.
3. Both cross slope (crowned shape) and superelevation are used in highway design with the
purse of facilitating drainage.
4. The typical traveled lane width is 12ft and traffic capacity gets reduced as the lane width is
smaller than 12ft.
5. The sight distance requirement at intersections depends on the traffic control type (no control,
stop, yield, or signal control).
6. Fatigue cracking, thermal (low-temperature) cracking, and rutting are typical distresses for
flexible pavement; while transverse/corner cracking, spalling, and faulting are typical
distresses for rigid pavement.
7. Jointed Reinforced Concrete Pavement (JRCP) can carry more load than Jointed Plain
Concrete Pavement (JPCP) because of the steel reinforcement in the JRCP.
8. Based on Superpave specification of asphalt binder, PG 64-22 binder can be used at the
location having higher temperature in summer and lower temperature in winter, as compared
to PG 70-28 binder.
9. The aggregate in the open-graded friction course is usually uniform-graded; while the
aggregate in the dense-grade asphalt mixture is usually well-graded.
10. In AASHTO rigid pavement design, after the loss of support correction, the modulus of
subgrade reaction is greater than the modulus of subgrade reaction without correction.
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