Environmental Protection Agency (EPA) Model Lead Based Paint Risk Assessor Practice Test

What is defined as the vertical part of a step in a staircase?

1. Riser

2. Tread

3. Landing

4. Balustrade

The correct answer is: Riser

The term that describes the vertical part of a step in a staircase is known as the riser. In stair design, the riser is crucial because it determines the height of each step, which affects the overall safety and comfort of climbing or descending the stairs. A consistent riser height is important to prevent tripping hazards and ensure that users can navigate the stairs easily. In contrast, the tread refers to the horizontal part of the step where a person places their foot. The landing is a level area at the top or bottom of a staircase, often used to provide a transition between different flights of stairs or other areas. The balustrade consists of the railing or guard that runs along the open sides of the stairs to prevent falls. Understanding these definitions is essential for anyone involved in designing, constructing, or assessing staircases, particularly in contexts where safety and accessibility are critical.