Which of the following is a requirement for fire-resistant construction in walls?

The requirement pertaining to fire-resistant construction in walls emphasizes that all fire-resistance rated assemblies necessitate specific penetrations. This is crucial because fire-rated walls are designed to maintain their integrity during a fire, thereby preventing fire and smoke from spreading between different areas of a building. Any penetrations through these walls, such as for electrical outlets, pipes, or ducts, must be carefully managed and protected to ensure that they do not compromise the fire-resistance rating. This often involves the use of firestop systems or other materials that can seal these openings to maintain the wall's integrity.

The incorrect options highlight alternative concepts that may not directly contribute to the effective fire-resistance of a wall. Non-combustible materials can enhance fire resistance, but not all fire-rated assemblies mandate exclusively non-combustible materials. The height of walls or applying fire retardant paint does not inherently address the requirements for fire-resistance rated assemblies regarding penetrations, making them less relevant in this context. Thus, the focus on specific penetrations provides a more accurate understanding of fire-resistant construction requirements.