First Mass Plywood Panel Gets APA Certification

by | Aug 24, 2018 | News

First Mass Plywood Panel Gets APA Certification

Freres Lumber Company says it has achieved Mass Plywood Panels (MPP) certification under the APA – The Engineered Wood Association’s ANSI/APA PRG 320 standard.

The product is the first Mass Timber Panel constructed entirely out of Structural Composite Lumber (SCL) worldwide, making it much more cost effective than CLT (cross-laminated timber) options, according to a Freres news release. Mass Timber Panels will allow rapid construction of multi-story structures with pre-fabricated structural wood panels, the release says.

The predictable char rate of mass timber panels allows buildings to be built taller with wood, allowing multi-story structures out of wood up to 18 stories anticipated in the next iteration of the International Building Code (IBC). Wood structures carry a smaller carbon footprint, provide greater sustainability, faster construction with less waste and are an economically favorable construction method compared to concrete and steel, Freres says.

The company says it is continuing to refine the design values of the product line, and will roll out additional MPP product configurations.

From Building Design + Construction: bdcnetwork.com

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Permit Approved For Nation’s First All-Wood High-Rise In Oregon

by | Jun 7, 2017 | News

Officials in Oregon have approved construction permits for the first all-wood high-rise building in the nation. Construction on the 12-story building, called Framework, will break ground this fall in Portland’s trendy and rapidly growing Pearl District and is expected to be completed by the following winter.

The decision by state and local authorities to allow construction comes after months of painstaking testing of the emerging technologies that will be used to build it, including a product called cross-laminated timber, or CLT.

To make CLT, lumber manufacturers align 2-by-4 boards in perpendicular layers and then glue them together like a giant sandwich before sliding the resulting panels into a massive press for drying. The resulting panels are stronger than traditional wood because of the cross-hatched layers; CLT can withstand horizontal and vertical pressures similar to those from a significant earthquake with minimal damage. They also are lighter and easier to work with than regular timber, resulting in lower cost and less waste.

For this project, scientists at Portland State University and Oregon State University subjected large panels of CLT to hundreds of thousands of pounds of pressure and experimented with different methods for joining them together. The project materials also underwent extensive fire safety testing and met fire codes.

State officials hope the building will stir greater interest in high-rise construction using mass timber and help revitalize the state’s lagging logging industry. Logging, once a major source of revenue in Oregon, has dropped sharply in the past few decades because of greater environmental protections for salmon and the spotted owl. The loss of the industry has devastated some of the state’s rural communities.

From The Register-Guard: https://registerguard.com/rg/news/local/35651365-75/portland-approves-permit-for-nations-first-all-wood-high-rise.html.csp