Rigid Pavement Design - Theory & Concepts

Structural design of Portland Cement Concrete (PCC) pavements, covering slab thickness, subbase support, and joint detailing.

Traffic Loading (ESALs)15 Million

Higher traffic volume requires a thicker slab to prevent fatigue failure.

Concrete Flexural Strength (S'c)4.5 MPa

Stronger concrete can withstand higher tensile stresses without cracking.

Modulus of Subgrade Reaction (k-value)40 MPa/m

Stiffer subgrade/subbase provides better support, reducing required thickness.

Include Dowel Bars (Load Transfer)

Tied Concrete Shoulders

250 mm

250 mm PCC Slab

Subbase / Subgrade (k = 40 MPa/m)

Load Transfer Coefficient (J): 2.8

* Simplified calculation for educational purposes.

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