deck. 55 Figure 5.3. ANSYS model of TCB with a coarse mesh grillage of the timber deck. 56 Figure 5.4. Reactions from truck loads that were applied to the ANSYS model. 57 Figure 5.5. Midspan cross-sectional view of the Thrall flatcar. 59 Figure 5.6. ANSYS bridge model of the Thrall flatcar. 61 Figure 5.7.