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23 Cards in this Set
- Front
- Back
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what defects are firmwood deductions made from (4) |
-rot -char -hole -missing wood |
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how is saprot accounted for when determining net firewood measurements (2) |
-inner soundwood core inside saprot is measured -gross and net scales are taken and the difference is the grade reduction volume |
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define trim allowance |
-the soundwood surrounding the rot and other defects made in grade reductions to account for loss in lumber recovery as defects must be squared out by sawyer |
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firmwood deduction |
-the loss of wood fibre due to rot, hole or chat |
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grade reduction |
-portion unavailable to manufacture lumber/products |
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collar (2) |
-shell -portion between inside of bark and a hole/rot in the heart of the log |
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how is an undersized log ID'ed (2) |
-ID: if evidence of undercut or but flare or thing to indicated the tree is compromised is present -if outside bark measurement is 15cm from butface and is less that minimum dia at stump height as specified in cutting authority |
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how is an undersized log measured |
-diameter outside bark 15 cm above highest ground at tree base |
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how does butrot calculation for grade reduction differ from other rots |
-the volume of rot used in the grade reduction is found, converted to conical and then cylindrical volume |
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define special forest products |
-products that can be partially or fully manufactured before timber is scaled |
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how are fence posts SPF scaled (3) |
-depends of split or round -split: stacked method -rounded: piece sampling |
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how are Christmas trees SPF scaled |
-piece count |
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how are building logs SPF scaled |
-piece or weight scaled |
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what does timber mark tell you |
-tells the cutting authority under which timber was harvested
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the cutting authority under which timber was harvested tells us what? (4) |
-royalty rate, -if timber can be exported without being exported -markholder -area of origin |
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what does timber brand tell us |
-the forest district and scale site the timber came from |
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what is a firmwood deduction |
-loss of wood due to rot, hole, char |
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what is grade reduction |
-the portion unavailable to manufacture into limber and other products |
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what is the difference between firmwood deduction and grade reduction |
-grade reduction is used only in the assessment of log grade |
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what administrative requirement must occur before licensed scale can scale |
-the MOF must examine and authorize scalers |
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what is the purpose of check scaling |
-to maintain scaling standards and practices throughout BC |
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what type of errors are made in scaling (7) |
-mistakes -natural errors -personal errors -instrumentation -systematic -compensating -lost data |
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what info is provided by waste and breakage surveys (2) |
-data for billing of avoidable waste as damages for non-compliance -determination of waste and residue volumes for cut control |
