Mercer Middle School

Innovative design sets this school apart. Glulam columns march down the corridor in a rhythmic series of diagonals, rising like mountain peaks from concrete plinths to create a dynamic structural repetition that provides both lateral and gravity load resistance. Rather than relying on conventional vertical supports, the second-floor mezzanine is suspended from the mass timber roof above, creating a dramatic structural expression while allowing greater flexibility in the building’s layout. The angled columns and suspended floor system showcase the versatility of mass timber design, demonstrating both its structural efficiency and ability to support unconventional load paths.

More than 95 percent of the Type III-B structure was comprised of wood, but designers used steel where it made sense. They chose metal trusses to achieve the long spans required for the gymnasium and commons. In the library, glulam beams were paired with an acoustic metal deck system; the combination preserved the wood’s warm aesthetic while meeting budget and performance goals. Smart structural detailing also added value. The project team designed shoulder-bearing glulam column connections that eliminated steel components and simplified installation.

Middle school students can be boisterous. To control vibration and sound transmission between floors, a gypcrete topping and sound isolation mat were installed over the CLT floor panels. Acoustic wall and ceiling panels are strategically located in classrooms, common areas, the library, corridors, and the gymnasium to absorb sound and reduce reverberation.

Designed to support the cultural diversity of the surrounding neighborhood while promoting collaboration, the school’s construct emphasizes comfort, inclusivity, and accessibility. Mercer Middle School shows that mass timber can create sustainable, human-scaled spaces that strengthen biophilic connections and support student well-being.