Çankaya Civil Engineering Department
CE 451 Traffic Engineering
2019-20 Spring
HOMEWORK #1
Due…… 12 March 2020
Surname, Name………………………………………………….
Stud. No…………………………………………………………….
(only handwriting and handsketching is allowed)
1. Define Transportation and Transportation Engineering .
2. Define Highway Engineering and Traffic engineering.
3.The basic phases of Highway Design Process are : ???
4. What is the difference between “Asphaltic Concrete” and “Bituminous Concrete”?
Define each .
5.What is the difference between “gradeline” and “groundline” of a highway? In which step of Highway Design we use them??
6.Define Vertical Profile of a highway using a simple sketch .
7.Define subgrade soil and function of it.
8.What is the depth of pavement. Count down the layers.
9. Define the types of Particle Size Distribution?? What kind of aggregates (as far as granulometries are concerned) for wearing course,
surface dressing, base course and rigid payment surface course? Show these distributions on a Particle Size Distribution Chart
(Granulometric Chart).
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10. What is the difference between “Road” and “Highway”?
11. Briefly define “Full Access Control”? Give examples of “highways” where full-, semi- and no-Access control is provided…
12.Fill in the names of parts (components shown as ????) of a typical highway cross-section shown below. Briefly define each part
(component).
Briefly define each component:
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13 .Define “grade of a road”?? What is the unit of road grade?? What is its importance ? Show on a simple sketch.
14. Briefly define the Planning Process of a transportation Project.
15. Define subgrade, subbase, base, and surface bituminous layers.
What type of materials are used for these layers?
What is the difference between flexible pavement and rigid pavement?
16. How many types of Design Drawings are there for a Project Realization Process? Give brief explanations.
17. Briefly define plan and profile of a roadway.
18. Define “side ditch” and “intercepting ditch”. Functions and sketches? Would you prefer construct both ditches in every road design? why?
19. Define “borrow pit” and “Waste Area”. When do we need them? What is the effect of using borrow pit on the earthwork cost?
20. Define Traffic Engineering as a sub-branch of Transportation Engineering.
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20. How many types of cross-sections are there when the earthwork calculations are concerned? Draw representative figures for each type of cross
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