Final answer:
The minimum distance of clear travel or clearance at the bottom of stairs is commonly at least 36 inches, which is necessary for safety and unobstructed foot traffic.
Step-by-step explanation:
The minimum distance of clear travel or clearance required at the bottom of stairs is often mandated by building codes. This clear space is crucial to provide safety for users exiting the stairs. It is used to avoid any obstructions that might cause accidents or impede the flow of traffic, particularly during emergencies.
While the specific distance can vary depending on local building codes and regulations, a common standard is to have at least 36 inches (approximately 91.4 cm) of clear space at the bottom of the stairs. This measurement ensures enough room for a person to step off the last stair without immediately encountering an obstacle.