Which of the following statements correctly defines a Rafter?

• A. Bollard
• B. Water Hammer
• C. Check Valve
• D. Rafter

Answer: (D)

Rafters are the sloped timber members that form the roof’s framing. They run from the ridge or peak down to the top of the exterior walls, creating the skeleton that supports the roof deck and coverings. They carry the roof loads (both the weight of the roof materials and any imposed loads like snow) and transfer those forces to the walls. Rafters are spaced regularly and sized to meet span and load requirements in the building codes. In a fire inspection, recognizing rafters helps you understand the roof construction, how fire could spread through the attic, and where ventilation or fire stopping may be needed.

Other terms refer to different components: a bollard is a protective post, water hammer is a pressure surge in piping caused by rapid valve changes, and a check valve prevents backflow in a piping system.