Q4: State whether the following statements are true or false: 1. Rigid pavement is a layered system so that all layers carry part of load 2. Flexibility in flexible pavements comes from the asphalt 3. The strength of layers in flexible pavements increases with depth 4. The design of rigid pavements depends on load distributing characteristics of the component layers while for flexible pavements, it depends on flexural strength 5. The initial construction cost of flexible pavements is high compared to rigid pavement

Q4: State whether the following statements are true or false: 1. Rigid pavement is a layered system so that all layers carry part of load 2. Flexibility in flexible pavements comes from the asphalt 3. The strength of layers in flexible pavements increases with depth 4. The design of rigid pavements depends on load distributing characteristics of the component layers while for flexible pavements, it depends on flexural strength 5. The initial construction cost of flexible pavements is high compared to rigid pavement

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter18: Bituminous Materials

Section: Chapter Questions

Problem 2P

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Concept explainers

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.

Question

Q4: State whether the following statements are true or false:
1. Rigid pavement is a layered system so that all layers carry part of load
2. Flexibility in flexible pavements comes from the asphalt
3. The strength of layers in flexible pavements increases with depth
4. The design of rigid pavements depends on load distributing characteristics of the
layers while for flexible pavements, it depends on flexural strength
component
5. The initial construction cost of flexible pavements is high compared to rigid pavement

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An asphalt pavement has a typical cross-section shown in Figure SPC-802. The maximum permissible stresses of the road materials are as follows: 1. Base allowable bearing pressure Subgrade allowable pressure 0.18 MPa 0.50 MPa Determine the following: Maximum allowable static wheel load, W that can be applied on the surface layer if the radius of contact between tire and pavement is 186 mm. The actual bearing stress induced on the base course layer when subgrade reaches maximum allowable pressure. c. The actual bearing stress induced on the subgrade when a static wheel load of 104 kN is imposed on the pavement. a. b. 50 mm Asphalt Base 180 mm 3.20 m Subgrade Figure SPc-802 Typical Road Cross-Section
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Highway engineering civil engineering Question number (36)
Design of pavement
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