Wood In Architecture Issue 2, 2019

28 ISSUE 2 • 2019 • WOOD IN ARCHITECTURE ENGINEERED WOOD Established in 1922, Freres Lumber may be one of the oldest family-owned and operated businesses in Oregon, United States, but it is also known for adopting cutting-edge technologies that transform and modernise construction practices. As a premier wood products manufacturing company known for its innovative, high- quality and sustainable wood products, Freres Lumber recently developed and released a new patented engineered wood product, the Mass Plywood Panels (MPP). PFA speaks to Tyler Freres, vice president of Sales. A veneer-based engineered wood product, MPP is a Mass Timber Panel that is produced by combining extremely thin 1/8 inch thick Douglas Fir veneers, resulting in a densely layered, large-format wood platform that can be made to exact specifications and cut with CNC machines. It is considered to be a Structural Composite Lumber (SCL), rather than plywood. “We call our product Mass Plywood Panels ‘plywood’ as an homage to the product we have been making for decades. In reality, the certification codes require the classification of the panels first as SCL under ASTM D 5456 and then as CLT under PRG 320. There is a required product path in the PRG 320 standard,” said Freres. SCL is a family of engineered wood products that includes laminated veneer lumber(LVL), parallel strand lumber (PSL), laminated strand lumber (LSL) and oriented strand lumber (OSL) and is typically used as structural elements such as headers, beams, joist and columns. THE ONLY MASS TIMBER PANEL MADE ENTIRELY OF SCL MPP is currently the only Mass Timber Panel constructed entirely of SCL. It has also earned a CLT classification. Simply put, the MPP is the embodiment of both the SCL and CLT. So what is the significance? In manufacturing terms, Freres explained that “Mass timber panels typically include CLT, NLT(nail laminated timber), and DLT(dowel laminated timber) which use lumber as the primary raw material to construct a panel with definable design values across the minor and major force directions.” By Szeto Hiu Yan FRERES LUMBER BRINGS TO MARKET A NEW TYPE OF MASS TIMBER PANEL – MASS PLYWOOD PANELS Kyle , Vice President of Operations (left) and Tyler Freres, Vice President of Sales, at the Freres MPP Plant