Arno Hefer Administrator Posts: 18 9/15/2023

Arno Hefer Administrator Posts: 18 The LET Standard Axle Design tool can be used to design concrete block pavements. This can be done by defining the pavement structure using the following typical input assumptions for the paving blocks and bedding sand: Paving blocks: Thickness, Stiffness = 3200 MPa, Poisson’s ratio = 0.3. No failure criterion selected (default NONE under failure criteria drop-down) Bedding sand: Thickness, Stiffness = 200 MPa, Poisson's ratio = 0.35. No failure criteria selected (default NONE under failure criteria drop-down) A standard mechanistic-empirical analysis is then performed with the focus on the behaviour of the supporting structure, i.e., either analysing a layer for deformation or fatigue failure depending on the materials under consideration. Note that as with any layer material defined in a mechanistic-empirical design setup, a proper specification or reference to the standard specification for both the paving blocks and bedding sand is critical to ensure good performance. edited by on 9/18/2023 edited by on 9/18/2023

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