The elevator pit is the portion of the elevator shaft that extends below the level of the lowest landing served by the elevator. The pit houses the buffer devices, compensation rope tensioner, pit ladder, lighting, stop switch, and drainage system. Minimum pit depth is determined by the rated speed of the elevator and the type of buffer used, and is specified by EN 81-20 and local building codes. A properly designed and waterproofed pit is essential for safe elevator operation and maintenance.