Ever considered a high-rise built with timber? The International Code Council's Ad Hoc Committee on Tall Wood Buildings has. For the past two years, they've developed a statement of alternate method (SAM) for the use of corss-laminated timber and structural composite lumber based on scientific findings. The Oregon Building Codes issues the SAM and introduced three new types of construction for tall wood buildings, which makes them the first state to allow the construction of wood buildings taller than six stories without special consideration.
These new types of construction can all be found under the Type IV heavy timber construction category. All three types must meet required fire resistance and safety guidelines. They are as follows:
Type A can be built as high as 18 stories and 270 feet, but must encapsulate exposed timber surfaces.
Type B can be built as high as 12 stories and 180 feet and a percentage can have exposed timber surfaces.
Type C can be built as high as nine stories and 85 feet, but has no restrictions on exposed timber surfaces.
Now that Oregon has paved the way, will Louisiana follow suit? Only time will tell.
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