Advance Pavement Design (CE-603 (C)) - Important Questions

Explain the factors/variables influencing pavement design, including load variables and structural variables.

Explain how subgrade strength is assessed by the California Bearing Ratio (CBR) test and describe the test procedure.

Explain the concept of Equivalent Single Wheel Load (ESWL) and its determination using the equal vertical stress criterion.

Consider the following data with respect to the design of flexible pavement: Design wheel load = 4200 kg, Tyre pressure = 6.0 kg/cm2, Elastic modulus = 150 kg/cm2, Permissible deflection = 0.25 cm. Compute the pavement thickness using Burmister's two-layer theory.

Explain the structural and functional requirements of flexible and rigid pavements.

What are the factors influencing stresses on rigid pavement? List the assumptions in Westergaard's analysis of rigid pavement.

Determine the warping stresses at interior, edge and corner of a concrete pavement slab 20 cm thick with transverse joint spacing 4.5 m and longitudinal joint spacing 3.5 m, modulus of subgrade reaction 8.0 kg/cm3 and temperature differential 15 deg C. Take E = 3x10^5 kg/cm2, Poisson's ratio = 0.15 and thermal coefficient = 10x10^-6 per deg C.

Outline the IRC recommendations for determining the thickness of CC pavement.

Explain the various types of joints used in cement concrete pavements.

Explain the design steps for flexible pavement overlay thickness using BBD data.

State the limitations of the CBR method of pavement design and also enlist the different tests on road aggregates.

Discuss the conditions under which stresses in cement concrete pavements lead to most critical combinations.

Discuss the AASHTO method of pavement design.

How does the Benkelman Beam method contribute to the evaluation of existing pavements, and what are the key steps involved in conducting this assessment?

Explain how climatic variation affects pavement design and performance.

Differentiate EASL and Design EASL and discuss how Design EASL is estimated?