GAD Editorial · Published · · English study · Chinese summary · Study dated 2026-10-02
Timber is often introduced through atmosphere: warmth, grain and the contrast with glass or concrete. A more precise reading begins with the job each component performs. Does it carry a floor, span a room, filter a view or provide the visible face of a composite product? Tamedia in Zurich, Centre Pompidou-Metz and Aspen Art Museum offer three related but distinct answers. Reading them together makes material description more useful than a shared label of wooden architecture.
Tamedia: the connection establishes the frame
Shigeru Ban Architects describes Tamedia's principal structure as a seven-storey timber rigid frame without steel joints or braces. Columns and paired beams are connected through an oval member, making the geometry of the joint central to the system. The architect's account also connects the shorter perimeter spans with intermediate spaces such as lounges and stairs. The structural module has consequences for occupation as well as load transfer. Official Tamedia account.
The useful drawing is a sequence from joint to bay to occupied floor. Trace where members meet, then locate a person beside them. Keep the claim scoped to the documented timber frame: it should not become a statement that every part of the building contains no steel, concrete or other material. A carefully described system is more informative than an absolute material claim.
Metz: separate structure from weather enclosure
The Centre Pompidou-Metz identifies its roof structure as a glued-laminated timber lattice, covered by a waterproof fibreglass and PTFE membrane. It also describes concrete gallery volumes arranged at different levels beneath and through the larger roof. The building therefore combines systems with different roles. Timber establishes the expansive roof geometry, while the membrane supplies an enclosing layer and the galleries organise the exhibition spaces. Credit belongs to Shigeru Ban and Jean de Gastines, with Philip Gumuchdjian involved in the winning competition design. Museum architecture account.
A section can clarify relationships that an exterior photograph compresses: the roof's depth, its supports, the galleries and the spaces between them. Ask where enclosure follows structure closely and where it permits a different spatial order. This is an interpretive exercise, not a structural assessment.
Aspen: a screen and a roof have different tasks
At Aspen Art Museum, the woven exterior screen is documented as Prodema, a composite involving paper and resin with a wood veneer. The museum separately lists a wooden roof truss among its architectural features. The screen's woven appearance should therefore not be used as shorthand for the whole structural system. It mediates the street-facing experience, while the roof structure serves a different purpose. Architect's project account · Museum building information.
Use a material-role checklist
For each project, identify the load-bearing members, weather layer, interior finish and replaceable components. Then ask how inspection, maintenance and future alterations would affect them. Those questions need project-specific technical evidence; photographs alone cannot establish fire performance, embodied carbon or service life. Begin with the GAD records for Tamedia, Centre Pompidou-Metz and Aspen. Their value as a comparison lies in the different relationships between material, assembly and the space people occupy.