Which is one of the three primary roof designs?

The three primary roof designs commonly recognized in fire service and architectural contexts include gable, hip, and mansard roofs. Among these, gable roofs are characterized by their triangular shape formed by two sloping sides that meet at a ridge, creating a pronounced peak. This design is efficient for shedding water and snow and is prevalent in residential structures.

Curved roofs, while they do exist and have their benefits such as enhanced aesthetic appeal and potential for increased interior space, are not classified as one of the three primary designs. Understanding the types of roof designs is crucial for firefighters as different styles may affect the structural integrity and fire behavior during incidents. Recognizing a gable roof can assist firefighters in strategizing their approach to ventilation, fire spread, and overall safety during operations.