As ICC prepares to vote on codes for tall wood buildings, opposition is still strong

As The International Code Council prepares for a vote on new code provisions that would allow wood-framed structures up to 18 stories high, concerns and opposition are still strong.

For instance, the Portland Cement Association (PCA) sponsored an online survey resulting in 75% of respondents saying they did not believe raising the allowable height of wood buildings was prudent. Their reasons included concerns over the strength and maintainability of wood, the danger of fire, and vulnerability to disasters.

Some members of the ICC's Ad Hoc Committee on Tall Wood Buildings shared some of those concerns. Proponents of wood-framed high rises point to research indicating that charring of heavy timber allows wood structures to maintain up to 90% of their strength during a fire.

Oregon recently became the first state to enact codes for high-rise, wood-framed buildings. The ICC will hold a public comment hearing on the issue after its annual conference in October. Later, online voting on the new code provision will be held over two weeks.

New ideas in design and constructability are radically changing how metal systems are used as roofing for commercial and institutional buildings. Behind the investment in these new kinds of expressions and construction approaches is a growing interest in improved performance and reduced environmental impact. Metal roofing systems can cut cooling and heating loads significantly, according to the EPA.