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

New Bill Will Push Research For U.S. Wood Building Construction

by | May 9, 2016 | News

A new bill from Congress would establish performance driven research for advancing tall wood building construction in the U.S.

The “Timber Innovation Act” would:

· Authorize the Tall Wood Building Prize Competition through the U.S. Department of Agriculture (USDA) annually for the next five years
· Create federal grants to support state, local, university and private sector education, outreach, research and development, including education and assistance for architects and builders, that will accelerate the use of wood in tall buildings
· Authorize technical assistance for USDA, in cooperation with state foresters and state extension directors (or equivalent state officials), to implement a program of education and technical assistance for mass timber applications

Recent advances in technology, engineering and safety have made it possible to build taller wooden buildings using newly-developed mass timber products, like cross-laminated timber. In the last five years, 17 buildings between seven and 14 stories have been built using heavy timber construction globally. Canada, Norway, Australia, the United Kingdom, Italy, Sweden and France all have constructed and occupied multiple tall-wood buildings.

Other countries have already been considering wooden skyscrapers. Researchers presented the Mayor of London with plans for an 80-story wooden building just a few weeks ago.

Multiple organizations in the U.S. wood industry, including The American Wood Council (AWC), American Forest Foundation (AFF), Binational Softwood Lumber Council (BSLC) and Southeastern Lumber Manufacturers Association (SLMA), have all announced strong support for the bill.

From Woodworking Network: https://www.woodworkingnetwork.com/news/woodworking-industry-news/new-bill-would-push-research-timber-building-construction-us?utm_source=WIT050616&utm_medium=Email&utm_campaign=WeekInTrees