Two tree species native to the Northeast have been found to be structurally sound for use in cross-laminated timber (CLT) products.
Eastern white pine and eastern hemlock passed strength testing by a University of Massachusetts Amherst timber engineer. The findings, published in the Journal of Materials in Civil Engineering, suggest that these species could support local markets for CLT.
Researchers made composite building panels by gluing together wooden boards from hemlock and pine trees, and then broke them in a strength-testing machine. The researchers analyzed the results, comparing them to engineering requirements, and found that both tree species met building standards, with eastern hemlock outperforming pine.
Salvaging wood from eastern hemlock is a key forest-management priority because the trees are under attack by an insect, the hemlock wooly adelgid. The insect doesn’t harm the wood, but it kills the tree that then becomes hazardous fuel for forest fires.
Related Stories
Codes and Standards | Jun 8, 2020
5 must reads for the AEC industry today: June 8, 2020
Frank Lloyd Wright sites set to reopen and construction jobs rise by 464,000.
Codes and Standards | Jun 8, 2020
Reopened offices raise liability risk for businesses and owners
Risks may not be covered by property insurance.
Codes and Standards | Jun 4, 2020
American Wood Council updates report on fire resistance of wood members and assemblies
Provides new examples and background on mass timber calculations.
Codes and Standards | Jun 3, 2020
Virginia makes GCs liable for subs employee wages
New law allows workers to sue GCs for wages in class action.
Codes and Standards | Jun 2, 2020
Designers, owners reinventing restaurants to cope with COVID-19
Options include rearranged seating, mobile ordering, designated flow spaces.
Codes and Standards | Jun 1, 2020
How owners should comply with OSHA roofing safety guidelines
Buildings should have fall protection and restraint provisions for those who go on roofs.
Codes and Standards | May 29, 2020
AIA releases new, updated sustainable project documents
Streamlined sustainable design and construction process included.
Codes and Standards | May 28, 2020
USGBC outlines how it will support pandemic recovery efforts
Includes emergency guidance and upgrades to the LEED green building program.
Codes and Standards | May 27, 2020
Office market could be COVID-19 casualty
As companies get used to work at home, post-pandemic office market could collapse.
Codes and Standards | May 26, 2020
Architectural Reuse Council will step up efforts to reuse construction waste
Cabinets, appliances, lighting, and lumber diverted from landfills to be repurposed.