1. A flexible pavement carries a static wheel load of 60 kN. The circular contact area of the tire is 25600n mm2 and the transmitted load is distributed across a wide area of the subgrade at an angle of 45°. The subgrade bearing value is 0.15 MPa, while that of the base is 0.42 MPa. Design the thickness of pavement and that of the base.

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: ********** Problem 1 The total load on a tridem axle is 44 kip. Consider a p, of 2.5 and SN of 4.…

A: Tridem axle load = 44 kipsTerminal servicibility, Pt = 2.5Structural number, SN = 4To find:The EALF…

Q: A flexible pavement is constructed with 5 inches of hot mix asphalt wearing surface (material…

A: Flexible pavement: Flexible pavement is made out of a bituminous material surface course and basic…

Q: A flexible pavement is designed with 4 inches of sand-mix asphalt wearing surface, 6 inches of…

A: Thickness of sand-mix asphalt wearing surface = 4 inThickness of dense-graded crushed stone base = 6…

Q: Differentiate function of bound and unbound layer of flexible pavement.

A: Flexible pavement transmit load from wheel to the lower layer by grain to grain transfer which take…

Q: Traffic loading in the flexible pavement design equation is equal to the number of vehicles that use…

A: Flexible pavement consists of a surface layer of bitumen-bound aggregate (asphalt concrete), several…

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

A: Two methods of flexible pavement structural design are empirical design and mechanistic-empirical…

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

A:

Q: Q5. Given the following information: A concrete pavement for two lane highway has doweled joints and…

A: Given;Modulus of subgrade reaction = 200 pci = (54.2 MN/m3)Modulus of rupture = 650 pci = (4.5…

Q: Q2) A wheel load with circular area has a radius 6 in. and uniform pressure 552 kPa is applied on a…

A: Consider the given data P=Pressure=552 kPa=80 psiσ=8 psiEsub=70000 psiEHMA=350000 psi

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.