4 states, "Not less than a single obtainable route shall hook up Each and every available stage, like mezzanines, in multilivel properties and facilities" with Exception 1 looking at, "An obtainable route just isn't needed to tales and mezzanines that have an aggregate place of not in excess of 3,000sf https://emiliotsmel.mdkblog.com/44412786/the-single-best-strategy-to-use-for-mezzbarriers