Trees are a remarkable resource that, when managed responsibly, can meet a wide range of fundamental needs for people and the planet for generations to come.
With millions of acres across the U.S., we offer hunters, anglers and other outdoor enthusiasts a vast resource for enjoying outdoor recreation.
We’re one of the largest private landholders in the United States. As stewards of these assets, we maximize the value of every acre.
We’ve been developing new building products and solutions for more than 100 years. We offer exceptional product performance and unparalleled support.
We're committed to clean, renewable options that meet environmental standards and coexist with sustainable forestry.
We're focused on climate change solutions, creating sustainable homes for everyone, and supporting thriving rural communities.
For more than a hundred years, Weyerhaeuser has been building and enhancing a reputation for responsible corporate citizenship.
We offer a range of exciting career opportunities for smart, talented people who are passionate about making a difference.
We're working together to be the world’s premier timber, land, and forest products company.
Use these simple calculators to size Trus Joist TimberStrand LSL and Parallam PSL beams and headers. Select the application below you are looking to calculate.
Calculators are for use in Canada applications only. For U.S. switch to U.S. Sizing Table Lookup.
Header Supporting Floor and Roof -Continuous Span Floor
Header Supporting Floor and Roof -Simple Span Floor
Header Supporting Roof