He was offered, without objection, as an expert witness with knowledge of codes and regulations affecting the design of buildings and structures. At plaintiff's request, Lisse inspected a particular area of the top level of the parking garage at the Mall that was identified by plaintiff. Lisse described that area as a perimeter wall that was forty-two inches high off the driving surface. He observed that near the base of the wall was a "step-like thing," sometimes referred to as a wheel stop, that was about twelve inches high and fourteen and a half inches across the top. The surfaces were all concrete and the horizontal surfaces had a textured anti-slip coating or membrane that served as a "barrier between the weather, salt, et cetera, and the concrete." The vertical surface had the basic protective coating but was not textured.