Calculate Pulpwood to make OSB

Posts that don't fit in the other train categories. Off Subject Chit Chat I tell you. :)

Calculate Pulpwood to make OSB

Unread postby AARR » Sun Jan 15, 2017 10:20 am

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!
PatC created a monster, 'cause nobody wants to see Don Simon no more they want AARR I'm chopped liver, well if you want AARR this is what I'll give ya, bad humor mixed with irrelevant info that'll make you roll your eyes quicker than a ~Z~ banhammer...
User avatar
AARR
Ann Arbor RR Nerd
 
Posts: 31127
Joined: Wed Dec 22, 2004 7:39 pm
Location: Washington, MI

Re: Calculate Pulpwood to make OSB

Unread postby Raildudes dad » Sun Jan 15, 2017 1:44 pm

I did a little research and was quite surprised by what I found. Moisture content of fresh cut timber can range from 75% to 110% (oven - dried basis). In the case of Grayling, that would mean 165,000 tons x 2 = 330,000 tons of raw wood was hauled in for processing.

I wouldn't call it pulpwood That implies the timber was used to make pulp in the paper making process.

I also found they figure 8.5% of the weight of dried manufactured wood (plywood, OSB etc) is glues, resins, and additives.

Any more questions? 8) I'll let Saturnalia check your math :lol:
Raildudes dad
Roadmaster
 
Posts: 4539
Joined: Fri Dec 23, 2005 9:12 am
Location: Grand Rapids, MI

Re: Calculate Pulpwood to make OSB

Unread postby AARR » Sun Jan 15, 2017 3:58 pm

Thanks again, RDD. I really appreciate your response.

I've been reading and came up with 1 ton of board to 1.5 ton of logs. But you've got better knowledge so I'm going with your answer 8) .

Raildudes dad wrote:I did a little research and was quite surprised by what I found. Moisture content of fresh cut timber can range from 75% to 110% (oven - dried basis). In the case of Grayling, that would mean 165,000 tons x 2 = 330,000 tons of raw wood was hauled in for processing.

I wouldn't call it pulpwood That implies the timber was used to make pulp in the paper making process.

I also found they figure 8.5% of the weight of dried manufactured wood (plywood, OSB etc) is glues, resins, and additives.

Any more questions? 8) I'll let Saturnalia check your math :lol:
PatC created a monster, 'cause nobody wants to see Don Simon no more they want AARR I'm chopped liver, well if you want AARR this is what I'll give ya, bad humor mixed with irrelevant info that'll make you roll your eyes quicker than a ~Z~ banhammer...
User avatar
AARR
Ann Arbor RR Nerd
 
Posts: 31127
Joined: Wed Dec 22, 2004 7:39 pm
Location: Washington, MI


Return to Chit Chat Babble Room

Who is online

Users browsing this forum: Pixl and 2 guests

x