WoodWorks Refines Carbon Calculator with Mass Timber Products

Feb. 3, 2017

The carbon calculator is a useful tool for building owners and designers who’d like to gain insight on the environmental value of alternate designs. 

WoodWorks-Wood Products Council launched an updated version of its free carbon calculator, giving out more options for buildings made from cross-laminated timber (CLT) and other mass timber products. Using wood products that store carbon instead of building materials that require fossil fuel energy to manufacture can help reduce greenhouse gases, points out WoodWorks.

To caculate the carbon benefits of a wood building, users access the carbon calculator and enter nominal wood volume information. The calculator then estimates:

  • How much time it takes U.S. and Canadian forests to grow that volume of wood;
  • The amount of carbon sequestered in the wood products; and
  • Greenhouse gas emissions avoided by not using more fossil fuel-intensive materials.

The carbon calculator also uses the U.S. Environmental Protection Agency’s (EPA) Greenhouse Gas Equivalencies Calculator to equate the total carbon benefit to number of cars off the road and home operational energy.

"The carbon calculator is a useful tool for building owners and designers who’d like to gain insight on the environmental value of alternate designs--It also provides information that allows them to express the carbon benefits of their wood building projects," says Bill Parsons, Senior National Director of the Architectural and Engineering Solutions team at WoodWorks.

The carbon calculator, which was already robust in terms of lumber, engineered wood products, decking, siding and roofing, was expanded to include new mass timber products available to North American building designers. Mass timber products such as CLT and nail-laminated timber (NLT) may now also be selected for use in a mass timber, light-frame/post and beam, or combination structural system.

Results are based on wood volumes only and are estimated based on research by Sarthre, R. and J. O’Connor, 2010, A Synthesis of Research on Wood Products and Greenhouse Gas Impacts, FPInnovations. The carbon calculator, as well as a complete list of changes, references and assumptions, is available on the WoodWorks website.

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