Question

Any breaks in elevation of _______ or more require a step or riser. Stairs consisting of _______or more risers or those ________ or more in height require a handrail.

Answer 1

Stairs need a step or riser for elevation breaks of 7.5 inches or more, and a handrail if there are four or more risers or they are 30 inches high.

Step-by-step explanation:

Any breaks in elevation of 7.5 inches (19 cm) or more require a step or riser. Stairs consisting of four or more risers or those 30 inches (76 cm) or more in height require a handrail.

These measurements are based on safety codes and standards to prevent accidents and ensure the safe use of stairs. In constructing or evaluating stair safety, measurements such as the step width and step height are vital considerations.

For example, using provided reference measurements, if the step width is calculated as 20 cm and the step height as 15 cm, these dimensions would have to be consistent across all steps to ensure safety and compliance.