Strong Wall
At the center of the east wall is a post-tensioned strong wall that is 20 ft wide, 19 ft high and 2 ft thick (6.1 x 5.8 x 0.61 m) (Figure 2). The wall is peforated with tie-down holes on the same 2 ft by 2 ft (0.61 x 0.61 m) grid as the test floor. The wall may be used in conjunstion with modular reaction blocks to permit a variety of reaction and acnhorage loading configurations including L-shaped systems.
