What is the horizontal line at the junction of the top edges of two sloping roof surfaces?

• A. Solid-Core Door
• B. Stud
• C. Truss
• D. Ridge

Answer: (D)

The line where two sloping roof surfaces meet is called the ridge. It runs along the roof’s peak and represents the intersection of the two roof planes. In framing terms, the ridge is formed where the rafters meet (often on a ridge board or ridge beam), creating that horizontal crest along the top of the roof. This distinguishes it from other terms: a solid-core door is unrelated to roofs; a stud is a vertical wall framing member; a truss is a triangular framework that supports the roof, not the specific line at the junction of the two slopes.