What are the factors affecting the pavement design?

Factors Affecting Pavement Design

  • Wheel load.
  • Axle configuration.
  • Contact pressure.
  • Vehicle speed.
  • Repetition of loads.
  • Subgrade type.
  • Temperature.
  • Precipitation.

Which of the following factors is are considered for designing thickness of pavement?

Flexural strength of the concrete (modulus of rupture, MR) Strength of the subgrade, or subgrade and subbase combination (k) The weights, frequencies, and types of truck axle loads that the pavement will carry.

What is the most important while designing a pavement?

Foundation. Providing a uniform, stiff, moisture and frost resistant foundation is the most important aspect of pavement structural design. Special attention needs to be given to subgrade uniformity and stiffness and the inclusion of subbase layers for pavements on the NHS.

What is mean by pavement design?

PAVEMENT. Pavement: A layered structure supported by soil subgrade to form the carriageway of a road iscalledroadpavement. • It is of two types. ➢Flexible pavement or bituminous. pavement or black top pavement.

What are the considerations in concrete pavement design?

Design features to improve structural performance include support, stiffness, strength, reinforcement, and slab thickness. Improper design for structural performance could result in cracking due to the heavy loads, appearing as longitudinal cracks, transverse cracks, or corner cracks.

What are the factors that affects the design of overlay for runway?

 The type of material to be used in overlay construction will depend on several factors such as the importance of the road, the design traffic, the thickness and condition of existing bituminous surfacing, construction convenience and relative economics.

What are the methods of pavement design?

Two methods of flexible pavement structural design are common today: Empirical design and mechanistic empirical design.

What is the primary purpose of pavement design?

The objective in the design of the road pavement is to select appropriate pavement and surfacing materials, types, layer thicknesses and configurations to ensure that the pavement performs adequately and requires minimal maintenance under the anticipated traffic loading for the design life adopted.

Why is pavement design important?

Pavements are an integral part of this roadway network. Pavements provide a smooth and durable all-weather traveling surface that benefits a range of vehicles (cars, trucks, buses, bicycles) and users (commuters, commercial motor carriers, delivery and service providers, local users, leisure travelers).