Q6.2: In Section 6.1 of the official rules, it states that “Structures will be subjected to 2 scaled and modified ground motions”. How does SDC intend on scaling/modifying ground motions for the shake table that will be used during competition? In order to successfully scale the ground motions to our shake table, we plan to choose between preserving acceleration, preserving impulse experienced, or preserving frequency as given by the power spectral density of the ground motion data. Which of these options will give ground motions that are the most similar to the ones used on the competition shake table?