Kupfer and others Kupfer et al., 1969 tested a set of simple concrete square panels of 0.20 m width and 0.05m thickness, subject to different distributed load status which is parallel to their plane, as indicated on Figure 3.
Kupfer y otros Kupfer et al., 1969 ensayaron un grupo de paneles cuadrados de concreto simple de 0.20m de lado y 0.05m de espesor, sometidos a diferentes estados de carga distribuida paralela a su plano como lo indica la Figura 3.