NCIDQ IDFX Practice Exam

What is the main function of a butt hinge?

1. To allow a door to swing outwards

2. To provide a flush connection between the door and frame

3. To secure a door with a key

4. To support the weight of double doors

The correct answer is: To provide a flush connection between the door and frame

The main function of a butt hinge is to provide a flush connection between the door and frame. This type of hinge is typically installed on the edge of a door and allows the door to pivot smoothly while ensuring that the edges of the door and the frame are aligned when the door is closed. The flush connection is important for both aesthetic and functional reasons, as it helps maintain the visual integrity of the door’s profile and facilitates seamless operation. Butt hinges are commonly used for interior and exterior doors in various types of buildings and are designed to support the weight of the door while allowing it to open and close properly. In contrast, the other functions mentioned in the choices, such as swinging a door outwards or securing a door, do not accurately capture the primary role of a butt hinge. Instead, those functions might pertain to other hardware types or hinge configurations. This demonstrates the specific design intent of butt hinges in providing a neat and functional door operation mechanism.