Final answer:
The minimum height for required guards on stairways, porches, balconies, and landings is 3 feet.
Step-by-step explanation:
Required guards on a stairway, porch, balconies, and landings should not be less than 3 feet in height, according to most building codes. These guards or railings are an essential safety feature to prevent falls and other accidents.
In comparison to tall buildings, as in the context of Table 12.31 where the height of buildings is related to the number of stories, guard heights are a small but critical aspect of construction that ensures the safety of the occupants and users of the building.
Building regulations are in place to protect the well-being of people using various structures, so adherence to the minimum guard height requirements is not only a legal necessity but also a practical measure to reduce the risk of injuries.