Make sure to SUBSCRIBE for more videos: https://www.youtube.com/channel/UC6YG9GzecH2S8cZn10uDWdw?sub_confirmation=1
Check out more IPM Shorts: https://www.youtube.com/playlist?list=PLzZRnFJ154ELWPmP8YTa_JoBBa9pERdnR
Check out these pest videos: https://www.youtube.com/playlist?list=PLzZRnFJ154EIzXOy52yqBDzP0EdhKlfVq
Check out these horticulture videos: https://www.youtube.com/playlist?list=PLzZRnFJ154ELt_yLXt-BqWR0mx7IJHJBl
ISU Extension Forestry: https://naturalresources.extension.iastate.edu/forestry
IDNR Wood Industry/Logging: https://www.iowadnr.gov/conservation/forestry/wood-industry-logging
What occurs between woods and mill.
Quality matters, management leads to quality.
Terms, industry understanding.
Importance of timber to economy.
Promote forest management.
Inspire to learn more.
Highlight role of timber buyers. Especially for students, as career path.
An everyday, but complicated process – let’s break it down.
Log and tree scaling are estimates of final board footage expected. Objective is to estimate as closely as possible the volume of lumber to be produced from a given set of logs.
Log rules are used to estimate board footage from measurements of diameter and length. Then, defects subtracted.
Logs seldom round, thus two diameter measurements – at small diameter end.
There are rules for scaling out defects from total.
Stumpage = standing trees.
What’s the difference between log scaling and tree scaling?
Tree scaling, used when estimating volume of standing timber (stumpage). Buyer measures DBH, and then deducts for taper and bark thickness to estimate the scaling diameter at the top of the first log. The volume is then determined using a log rule (Ben does this in video 0230). Ocular estimates and local experience with taper and bark thickness are then used to determine the diameter and length of each additional log and hence to volume of the tree.
Knowing what you have when selling is critical – thus importance of forester. Like selling animals without weighing them.
Scaling vs. grading.
Before logs can be sold, we need to determine their content (volume) by some standard. Board foot is common standard for sawlogs and lumber.
Standing trees – volume of wood may be estimated by obtaining 2 measurements and applying these to tree scale volume tables. Diameter and merchantable height.
Merchantable height includes the portion of the tree from stump height to a point on the stem at which merchantability for saw timber is limited by branches, deformity, or minimum diameter. For smooth stems, this minimum diameter is usually not less than 60% of the tree DBH – which is the case for the smallest sawlog trees, usually 10” in diameter.
Log scale vs. tree scale.
Log scaling – measuring board foot content of a log or group of logs. Equipment needed is a yardstick and log rule. To speed this up, a log scaler uses a scaling stick (basically a yard stick with a log rule printed on it).
Scaling logs is the normal basis for transactions between loggers and sawmillers. Not as accurate as the lumber tally after sawing. Log scaling prompt settlement for timber cut and delivered without waiting for actual yield, and eliminates the need for separating logs on the yard by ownership (?).
Log rules estimate volume of sound, straight logs, with no accordance for defect. Thus, volume loss due to defect must be calculated separately and deducted from the gross scale given by log rule.
Timber is often sold on stumpage basis, which means it is sold in standing trees rather than cut products such as logs.
Sawtimber (sawlogs) are trees large enough to be sawn into lumber. Specifications refer to length and diameter inside bark. Log size specifications are regional.
How does product knowledge affect you?
It’s like selling a used car. To properly market, you need to know much about it, such as age, how it works, miles, owners. Without detailed understanding, your ability to sell it for maximum value is limited, especially when selling to experienced buyer like a dealer.
Same for marketing your timber! Species, type of timber, nearby mills, what products can be made, volume, age, condition, defect.
Lack of knowledge leads to less-than-full value received. Education prior to marketing = satisfied landowners when timber is sold.
Marketing is important step/stage in life of your forest. Before you market, learn all you can about what is in your forest. By doing so, you’ll help yourself get full value for your forest and ensure that a new forest will take its place in future. Above example from MS State pub.
#logger, #forest, #timber, #tree, #skidding, #scaling, #lovetrees, #loveforest, #forestlove, #lumberjack, #treetopper, #treejobs, #forestjobs, #intensejobs, #boardfoot, #treemeasurements, #timberbuyer,
ISU Extension Forestry: https://naturalresources.extension.iastate.edu/forestry
IDNR Wood Industry/Logging: https://www.iowadnr.gov/conservation/forestry/wood-industry-logging