NCIDQ Interior Design Professional Exam (IDPX) Practice Exam

Your client wants a frameless glass door with concealed door hardware for sound isolation. Which option meets this requirement best?

1. Provide a center-hung pivot with surface mounted closer

2. Provide a center-hung pivot door with concealed closer and optional pile seal

3. Provide an offset pivot with surface mounted closer

4. Provide an offset pivot with concealed closer

The correct answer is: Provide a center-hung pivot door with concealed closer and optional pile seal

The requirement for a frameless glass door with concealed door hardware for sound isolation is crucial, as sound control typically necessitates tightly sealed entries. The best option, which includes a center-hung pivot door with a concealed closer and an optional pile seal, addresses both the aesthetic and functional needs effectively. A center-hung pivot design allows the door to pivot smoothly from a single point at the top and bottom, which facilitates ease of use and enhances the door's overall stability. By utilizing a concealed closer, the hardware isn't visible, which maintains the clean lines and minimalistic aesthetic that frameless glass designs typically embody. This design choice also minimizes any potential gaps between the door and the frame, which is essential for sound isolation as it helps to dampen sound transmission. Additionally, the inclusion of an optional pile seal further enhances the soundproofing capabilities. Pile seals are soft, flexible strips that compress against the door when closed, effectively reducing sound leakage and improving the overall acoustic performance of the door. While other options might include closer hardware, they do not fulfill the requirement as effectively as this choice does. For instance, options featuring surface-mounted closers may compromise the aesthetic appeal of the door and can create gaps that would allow sound to pass through. Therefore