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Hemlock drying in coastal BC: 2015-2016

https://library.fpinnovations.ca/en/permalink/fpipub49817
Author
Friesen, Charles
Date
March 2018
Material Type
Research report
Field
Fibre Supply
, there are two distinct trajectories for hemlock wood moisture content, depending on if the tree was felled
Author
Friesen, Charles
Date
March 2018
Material Type
Research report
Physical Description
25 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Wood
Drying
British Columbia
Moisture content
FPI TR
Series Number
Technical Report ; TR 2018 n.14
Language
English
Abstract
Based on the data from this study and a literature review, there are two distinct trajectories for hemlock wood moisture content, depending on if the tree was felled before or after May. Hemlock trees felled before May gain the full benefit of spring drying according to the ambient conditions of their local micro-climate. Trees felled after May suffer from a physiological spike in moisture content that the tree generates to promote its growth and survive the summer soil drought.
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Hemlock drying update: 2016/17

https://library.fpinnovations.ca/en/permalink/fpipub49818
Author
Friesen, Charles
Date
March 2018
Material Type
InfoNote
Field
Fibre Supply
Author
Friesen, Charles
Date
March 2018
Material Type
InfoNote
Physical Description
2 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Wood
Drying
British Columbia
Moisture content
Series Number
InfoNote ; 2018 n. 7
Language
English
Abstract
The problem of second-growth western hemlock (Tsuga heterophylla) sinking when watered continues to plague the coastal logging industry of British Columbia. A study conducted by FPInnovations in 2015-16 concluded that felled hemlock logs took two distinct trajectories in their drying patterns through time, depending on whether they were felled before or after May.
Documents

InfoNote2018N7.PDF

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Observations of the Peterson Pacific DDC 5000 log delimber-debarker-chipper

https://library.fpinnovations.ca/en/permalink/fpipub39930
Author
Araki, Dennis
Date
September 1994
Material Type
Research report
Field
Fibre Supply
Author
Araki, Dennis
Date
September 1994
Material Type
Research report
Physical Description
8 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Costs
Chips
Productivity
Bark
Processing
Machines
Moisture content
Alberta
Series Number
FO Technical Note Wood Harvesting ; TN 214
Language
English
Abstract
In-woods chipping
In-woods debarking
Satellite operations
Software
COSTS
Fuji/King debarker
Bruks 1512 drum chipper
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Wicking to reduce moisture content in Western Hemlock: Vancouver Island study

https://library.fpinnovations.ca/en/permalink/fpipub49848
Author
Friesen, Charles
Date
March 2018
Material Type
Research report
Field
Fibre Supply
FPInnovations ─ Report Title 1 Wicking to Reduce Moisture Content in Western Hemlock
Author
Friesen, Charles
Date
March 2018
Material Type
Research report
Physical Description
25 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Wood
Drying
British Columbia
Moisture content
FPI TR
Series Number
Technical Report ; TR 2018 n.26
Language
English
Abstract
The idea that a wicking treatment – leaving tops, branches, and needles attached to the stem after felling – would reduce stem moisture content and lead to reduced loss of western hemlock logs from sinking during watering was tested. This study did not show that wicking produces a different result from normal bucking in average stem moisture content if both groups are treated equally. Further, after curing for two months logs did not increase in moisture content during watering.
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