Floors and Other Openings Injuries in the workplace because of holes in walking and working surfaces are commonplace. Slips, trips and even falls from one level to the next can be as painful as a fall from a roof. The following items should be considered when dealing with floors and other types of openings. Guide for Discussion Hazard Identification: Floor Openings (2”x2” minimum at any depth) Temporary openings Plumbing Ventilation (Vault Ceilings?) Skylight wells Manholes Holes in Ground (Trenches and Excavations) Wall/Window Openings Temporary guardrail system Washington Fall Protection Standards Methods of Protection Use of standard guardrails Use of covers Able to...