The maximum PGA that the shake table can apply for a specimen weight of 40 t is 0.875g in the y-direction (longitudinal) and 0.625g in x-direction (transversal, for the axis orientation see Figure 1).

At the moment, it is foreseen to reach this limit through in four steps, applying the ground motion at 25%, 50%, 75% and 100% of the ground motion given in the files Montenegro_Albatros_EW(SN)_100p_shake_table.txt. At each level, three tests will be conducted (always in the same order):

  • Firstly, a uni-directional test in the y-direction will be conducted (Substep I);
  • Secondly, a uni-directional test in the x-direction will be conducted (Substep II);
  • Thirdly, a bi-directional test in the x- and y-direction will be conducted (Substep III).

The given limit will be reached through four steps as described in Table 5.

Note that the exact testing sequence is still under discussion and the information might be updated in the future.

Table 5. Testing sequence

Level of shaking Substep I Substep II Substep III
25% shake table capacity
PGA 0.219/0.156g y/x-dir
y-direction x-direction Both directions
50% shake table capacity
PGA 0.438/0.313g y/x-dir
y-direction x-direction Both directions
75% shake table capacity
PGA 0.656/0.469g y/x-dir
y-direction x-direction Both directions
100% shake table capacity
PGA 0.875/0.625g y/x-dir
y-direction x-direction Both directions