A pavement consists of 5 inches of asphalt underlain by a crushed stone based course. There is no sub base. The asphalt has an elastic modulus of 350,000 psi at room temperature and the base course has a CBR of 70. Determine the thickness of the crushed stone base needed to reach an SN of 2.85. Assume the base course is saturated 5% of the time and drains within a day

Q: QUESTION 4 Normally, a flexible pavement contains: surface layer+base layer surface layer+subgrade…

A: We have to determine answer of question 4 and question 5 in which we have to choose correct option…

Q: Characteristics of concrete (rigid) pavement (Select two) Please select all applicable answers.…

A: There are lots of characteristics  of rigid pavement

Q: What purpose does the building of the pavement serve? The numerous layers that go into the building…

A: The pavement is a surface that is safe, smooth and durable enough for traffic movement. The main…

Q: A concrete pavement slab is 20 cm thick, with a modulus of elasticisty of 3x105 kg/cm2 and a…

A:

Q: One of the unbound pavement layer road base materials is “Dry-bound Macadam”. When is this material…

A: Traditionally, a covering of stone that is approximately one size and has spaces covered with such a…

Q: To select an asphalt binder for a specific location, the mean seven-day maximum pavement temperature…

A: Consider the condition which satisfies by high-temperature grade of the pavement. High temperature…

Q: What standard PG asphalt binder grade should be selected under the following conditions: The…

A: It is required to determine the high temperature grade. High temperature grade=Mean maximum…

Q: Choose standard PG asphalt binder grade for the following condition: (show your calculation) The…

A: PG asphalt binder  PG grading establishes the grade of a binder based on numerous measures of its…

Q: A flexible pavement is constructed with 4 inches of hot-mix asphalt wearing surface, 10 inches soil…

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Q: An interstate highway pavement composed of asphalt surface course, cement treated base course and…

A: Step 1:Step 2:Step 3:

Q: A flexible pavement is constructed with 3 inches of hot-mix asphalt (HMA) wearing surface, 6 inches…

A:

Design of pavements

Pavement is a structure that is made up of different layers such as sub-base course layer, base course layer, binder course, and a surface course formed with different materials such as gravel, above the subgrade soil constructed to act as a path or carriageway enabling the movement of vehicles. The surface of the pavement should possess characteristics such as adequate friction, light reflection, and drainage. The pavements are classified based on structural design into rigid pavements, flexible pavements, composite pavements, and unpaved pavements. The process of determining a suitable pavement type, its constituent layers, and its thickness is called pavement design.