Figure 30(a) Standard Stall. The minimum width of the stall is 60 inches (1525 mm). The centerline of the water closet is 18 inches (455 mm) from the side wall. The location of the door is in front of the clear space and diagonal to the water closet, with a maximum stile width of 4 inches (100 mm). An alternate door location is permitted to be on the adjacent side (side wall) of the stall also diagonal to the water closet with a maximum stile width of 4 inches (100 mm). If a wall mounted water closet is used, the depth of the stall is required to be a minimum of 56 inches (1420 mm). If a floor mounted water closet is used, the depth of the stall is required to be a minimum of 59 inches (1500 mm). A grab bar at least 36 inches (965 mm) long shall be located behind the water closet, with one end no farther than 6 inches (150 mm) from the inside corner of the stall. Another grab bar shall be mounted adjacent to the water closet on the side wall and extend from no more than 12 inches (305 mm) from the back wall to at least 52 inches (1320 mm) from the back wall.