I'd like to calculate how much pulpwood (logs/poles) it takes to make OSB. Let's use L-P's Grayling plant as an example again. RDD determined it produces 165,000 (165,235) tons per year (450 million sq ft at 1/4" basis). So how many tons of pulpwood will it take?

In the paper industry it takes approximately 1.4 tons of pulpwood or scrap paper to make 1 ton of paper. I haven't found the calculation / formula for wood products.

The answer might be at this site but I could sure use some help understanding it http://www.ruraltech.org/projects/conversions/briggs_conversions/briggs_append2/appendix02_combined.pdf

As always thanks!