What is the term for any wall that is at right angles to another wall?

The term for any wall that is at right angles to another wall is known as a cross wall. Cross walls are commonly used in building construction to help create different spaces and can provide structural support or act as a means to distribute loads in various directions. These walls typically intersect with other walls to form the layout of rooms or spaces within a structure.

Understanding the concept of cross walls is essential for fire service personnel, as it helps them recognize how the building's layout may affect fire spread, ventilation, and overall safety during firefighting operations. Recognizing the relationship between walls, particularly those at right angles, is important for assessing a building’s structural integrity and potential hazards during emergencies.