First I must state that I no longer live or work in a prone zone. However I have been through many in Japan and California and two here (NY's Adirondack's). Most modern building in the zones have flexible foundations and containment shelving. Machines are normally bolted to the floor and extra rebar is used the the perimeter of the foundation. Some critical equipment with cast iron frames are mounted on a lord type mount. Especially if it has a high center of gravity like a vertical Mill. Fortunately in today's world of food service, rigid frames have been replaced with steel stamping s. Much more forgiving to flex and lighter.
Going through your first one above a 5 is a scary deal. Especially when your on a fifth floor and have had a drink or 2.