Final answer:
A 3x3-foot landing should be installed at the top and bottom of the ramp, where doors open onto ramps, and where ramps change direction to ensure safety and stability.
Step-by-step explanation:
A 3x3-foot landing should be installed in four locations:
- At the top of the ramp: This landing area provides a safe place for individuals to step onto the ramp without any obstruction.
- At the bottom of the ramp: This landing area is necessary to ensure a smooth transition from the ramp to the ground, reducing the risk of tripping or falling.
- Where doors open onto ramps: Door openings onto ramps should have a landing area to prevent any collision or tripping hazard when opening or closing doors.
- Where ramps change direction: Changing directions in ramps requires a landing area to ensure stability and safety.