BACK TO CATEGORIES Photo ID: 1445 (Click photo to view original size.) Category: Falls Hazard: fall Standard Violated: 1910.23(a)(2) Corrective Action: Provide guardrails or a cover for the pit. Description: This photo shows pit with ladder access to a vertical conveyor system. The pit's opening is 20 inches by 24 inches with a depth of 11 feet 6 inches.