**6.8 Plate loading test (PLT)**

This test aims to help determine important parameters such as Young's modulus, deformation, and strengths characteristics, and modulus of subgrade reaction. Different methods are used according to the type of structure. Due to the frequency of

**Figure 8.** *a) Ballast box test apparatus; b and c) ballast box dimensions; d) LVDT location [38].*

**Figure 9.** *The CBR device.*

*Developing a Novel Superstructure System for the Ballasted Railways Using RRP235special... DOI: http://dx.doi.org/10.5772/intechopen.111470*

**Figure 10.** *PLT test device.*

loading and unloading cycles in transportation engineering, incremental and cyclic loading can be used. The test can be done at surface level or subgrade depth (**Figure 10**).
