by Web Editor | Nov 30, 2015 | News
We get so excited about Cross-Laminated Timber (CLT), the fancy plywood on steroids that we talk so much about on TreeHugger. But in fact, there is a much older technology for building with wood, that warehouses and factories were built out of 150 years ago with a fancy new name: Nail-Laminated Timber, or NLT. It used to be known as heavy timber or mill decking and is drop-dead simple: you just nail a pile of lumber together and voila.
Lucas Epp of Structurecraft stunned the audience in a presentation at the Wood Solutions Fair in Toronto, showing extraordinary projects built out of the stuff. Because while CLT is great stuff, it’s pretty new in North America, it’s expensive, and it’s not fully understood by the building inspectors. Whereas if you are doing a simple span, NLT does the job just fine, it’s a lot cheaper, can be made by anyone with a hammer and has been in the building codes forever.
It’s now being used in a 210,000 square foot, seven story office building in Minneapolis, where the developer, Hines, wanted “the warmth of wood and the embrace of green construction techniques and materials” to attract the tech and creative sector of the market. It also goes together much faster than a conventional steel or concrete building.
Heavy timber office and warehouse construction fell out of favor early in the 20th century after major fires in a number of cities caused the switch to concrete and steel noncombustible construction. The development of effective sprinklers has reduced that risk, and concerns about the carbon footprint of concrete have made renewable wood look a lot more attractive.
From TreeHugger.com: https://www.treehugger.com/green-architecture/old-new-again-nail-laminated-timber.html?utm_source=WIT112715&utm_medium=Email&utm_campaign=WeekInTrees
by Web Editor | Jul 31, 2015 | News
Developer Hines has broken ground in Minneapolis’ North Loop on its all-timber office building, the first commercial property in the U.S. to use an engineered wood material for its interior and structure.
The Houston-based real estate company announced Monday the start of construction on the 220,000-square-foot, seven-story office building (being called T3 for its emphasis on timber, transit and technology) that has garnered national attention.
Hines hired Vancouver-based Michael Green Architecture, in conjunction with DLR Group, to design the building. Michael Green is among the world’s foremost experts in heavy timber construction and an advocate for timber as a sustainable building material. While old-growth timber — the kind needed to support the weight of a tall building — is unavailable for construction today, an engineering process that presses smaller pieces of wood together can re-create the load capacity of heavy timber.
Following the initial announcement in November, the Wall Street Journal showcased the project, saying it will be the tallest modern all-timber structure in the U.S. once completed. Hines said Monday that it expects the building to open in early fall 2016.
From the Star Tribune: https://www.startribune.com/developer-breaks-ground-on-modern-all-timber-office-building-in-north-loop-minneapolis/318684551/?utm_source=WIT073115&utm_medium=Email&utm_campaign=WeekInTrees
by Web Editor | Mar 4, 2015 | News
Last November, the Hines development company unveiled plans for a new office building in the North Loop section of Minneapolis. Seems like ordinary news, except that the building would be the first of its kind in the U.S to be made primarily of wood. The builders refer to the project as “T3” for “Timber, Technology and Transit.”
“This building is very unique,” the lead architect, Michael Green, told the Minneapolis Heritage Preservation Commission earlier this month. “It is the first large-scale office building built of timber in America. It is part of a revitalization of century-old ideas of how to build buildings.”
At the federal level, the U.S. is encouraging the use of sustainable wood products in building. The MinnPost reports that Green says that wood grown sustainably has a smaller carbon footprint than concrete and steel. If this seven-story building were to go forward, it would include a foundation and a first floor made of concrete and steel and six stories of mass timber construction.
As Next City columnist Alexis Stephens reported in “Can Taller Buildings Make Toronto More Affordable?,” the province of Ontario recently relaxed height restrictions on wood-frame construction to encourage residential density.
In Minneapolis, the MinnPost notes, the city has been flexible. Dan Callahan, supervisor of the city of Minneapolis’ plan review section, said he has had several meetings with the T3 team to talk through building code issues. The building would fit under code sections for heavy timber buildings. Callahan said he expects further meetings to get more information and to present the design team with other issues the city has before a formal permit application is received.
From NextCity.org: https://nextcity.org/daily/entry/minneapolis-office-building-wood-plans
