24 / FRAME BUILDER - VOL7 NO2 Hockessin, Del., showcases a modern approach to timber design using glulam trusses in southern yellow pine with a natural clear finish. It features expressed steel connections and tension-rod joinery in a matte black powder- coat finish. With a span of 12 x 20 m (40 x 65 ft), the lobby incorporates 161 pieces of timber totaling 22.45 m³ (9,515 board ft). Outside, 35 timber brackets supporting exterior overhangs express the timber beneath the eaves. The scale of the project highlights the intentional celebration of timber in design. Spiritual sustainability Beyond aesthetic and structural considerations, sustainability has come to the fore when considering timber’s role in spiritual spaces. In an era of growing environmental consciousness, wood embodies a connection to the planet and a commitment to responsible stewardship. The Chabad of Bedford illustrates this concept. By strategically combining Douglas fir glulam and solid timber, the design team was able to minimize material use while maximizing structural efficiency. The project incorporated structural insulated panels with an impressive R–40 insulation value to provide superior energy efficiency and performance to the building. Timber framing has a lower embodied carbon footprint than steel or concrete.1 This advantage stems from timber’s natural carbon sequestration process: trees absorb carbon dioxide as they grow, storing it within their fibers even after harvesting. Timber production also requires less energy-intensive processing than steel or concrete manufacturing. The renewability of timber, coupled with responsible forestry practices and efficient construction techniques, further contributes to its reduced environmental impact. Mark Hughes, professor of Wood Material Technology at Aalto University in Finland, notes in the book, Rethinking Wood: Future Dimensions of Timber Assembly,2 that building construction accounts for between 30 and 50 percent of material usage, while construction and demolition waste accounted for 32 percent of total waste in the EU 27 in 2012. SACRED STRUCTURES THE OFFICIAL NFBA MAGAZINE The Chabad of Bedford features a combination of Douglas fir glulam and solid timber. Photos by Jana Bannan
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