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23 records – page 1 of 3.

Accelerated drying of British Columbia framing lumber

https://library.fpinnovations.ca/en/permalink/fpipub779
Author
Mackay, J.F.Graham
Date
April 1984
Edition
37108
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Mackay, J.F.Graham
Contributor
Science Council of British Columbia.
Date
April 1984
Edition
37108
Material Type
Research report
Physical Description
13 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Steam
Seasoning steam
Seasoning high temperature
Seasoning
Drying
High temperature
Series Number
W-327
Location
Vancouver, British Columbia
Language
English
Abstract
Seasoning - Steam
Seasoning - High temperature drying
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Assessment of accuracy of species-temperature correction tables for resistance-type moisture meters

https://library.fpinnovations.ca/en/permalink/fpipub744
Author
Mackay, J.F.Graham
Date
May 1984
Edition
37057
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Mackay, J.F.Graham
Date
May 1984
Edition
37057
Material Type
Research report
Physical Description
10 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Moisture content
Lumber drying
Series Number
W-267
Location
Vancouver, British Columbia
Language
English
Abstract
Moisture determination, Electrical
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Comparison of two kiln systems used in drying western hem-fir : Dehumidifcation (Heat pump) Hot air (Direct fired natural gas)

https://library.fpinnovations.ca/en/permalink/fpipub36973
Author
Mackay, J.F.Graham
Date
June 1985
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Mackay, J.F.Graham
Date
June 1985
Material Type
Research report
Physical Description
18 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Seasoning kilns
Seasoning kiln drying
Seasoning high temperature
Seasoning
Drying
Kilns
High temperature
Series Number
W-90
Location
Vancouver, British Columbia
Language
English
Abstract
Seasoning - Kilns - Tests
Seasoning - Dehumidification
Hem-fir - Seasoning
Seasoning - High temperature drying
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The development of kiln schedules for hem-fir 4 x 4-inch "baby squares"

https://library.fpinnovations.ca/en/permalink/fpipub37164
Author
Avramidis, S.
Mackay, J.F.Graham
Date
October 1987
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Avramidis, S.
Mackay, J.F.Graham
Date
October 1987
Material Type
Research report
Physical Description
13 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Seasoning
Series Number
W-421
Location
Vancouver, British Columbia
Language
English
Abstract
Hem-fir
Seasoning
02-12-43-K-205
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Drying spruce-pine-fir lumber

https://library.fpinnovations.ca/en/permalink/fpipub7315
Author
Garrahan, Peter A.
Mackay, J.F.Graham
Oliveira, Luiz C.
Savard, Marc
Elustondo, Diego
Jozsa, Les A.
Date
January 2008
Edition
49470
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Garrahan, Peter A.
Mackay, J.F.Graham
Oliveira, Luiz C.
Savard, Marc
Elustondo, Diego
Jozsa, Les A.
Date
January 2008
Edition
49470
Material Type
Research report
Physical Description
172 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Test methods
Softwoods
Seasoning kiln drying
Seasoning
Drying
Kilns
Manual
Series Number
SP-527E
Location
Sainte-Foy, Québec
Language
English
Abstract
This manual is intended to serve as an educational resource and working tool for people actively involved in the drying of Spruce-Pine-Fir (SPF) lumber. The manual covers subject matter from the basic principles of drying through to the application of techniques specific to the drying of this species group. The range and depth of information presented has been selected to meet these objectives.
Disponible en français: https://library.fpinnovations.ca/en/permalink/fpipub7507
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The effect of steaming prior to pressure treatment on the penetration of borates into western hemlock

https://library.fpinnovations.ca/en/permalink/fpipub41124
Author
Morris, Paul I.
McFarling, S.M.
Byrne, Anthony (Tony)
Mackay, J.F.Graham
Date
March 1995
Material Type
Research report
Field
Sustainable Construction
Author
Morris, Paul I.
McFarling, S.M.
Byrne, Anthony (Tony)
Mackay, J.F.Graham
Date
March 1995
Material Type
Research report
Physical Description
8 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Tsuga Heterophylla
Tsuga
Pressure
Preservatives penetration
Preservatives boron
Preservatives
Preservation
Penetration
Balsam
Fir
Series Number
1759K515
W-1194
Location
Vancouver, British Columbia
Language
English
Abstract
The recent interest in borate treatment for the production of termite-resistant lumber has led to the need for improved treatment processes. Pre-steaming prior to pressure treatment was known to have a number of potential benefits in terms of improved permeability, moisture distribution and effectiveness of the vacuum. This process was therefore tried on western hemlock dodai (105 mm squares) in an attempt to achieve 80% cross sectional penetration with a minimal diffusion period after pressure treatment. Western hemlock pre-steamed to a core temperature of 82 degrees C in four hours took up almost double the amount of treating solution of end-matched unsteamed samples. There was an improvement in mean heartwood penetration of 45% immediately after treatment and a 134% increase in penetration after one week storage. This was not entirely due to diffusion within the wood but to mass flow of treating solution continuing after the end of the pressure process. After one week storage 64% of samples had 80% of the cross section penetrated. Reducing the vacuum time from 30 minutes to zero had a detrimental effect on penetration. Increasing time under vacuum to 60 minutes provided no beneficial effect. Pre-steaming of hemlock dodai appears to be a very effective means of improving uptake during pressure treatment.
Preservatives - Boron
Preservatives - Penetration
Tsuga heterophylla - Preservation
Abies amabilis - Preservation
Preservation - Pressure processes
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The effect of sticker thickness on the efficiency of heat pasteurization

https://library.fpinnovations.ca/en/permalink/fpipub37312
Author
Mackay, J.F.Graham
Date
March 1993
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Mackay, J.F.Graham
Date
March 1993
Material Type
Research report
Physical Description
8 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood
Stickers
Pinus
Kilns
Insects
Series Number
Forestry Canada No. 13A
Contract no. 1212K031
W-1026
Location
Vancouver, British Columbia
Language
English
Abstract
To retain access to European markets all green softwood lumber except cedar will have to be heat treated to a core temperature of 56°C. To reduce processing costs it may be possible to use thinner strips between rows of lumber than used in kiln drying, so that packages could be shipped with strips in place. This would eliminate unstickering and repackaging after treatment. To determine the effect of strip thickness on heating time, laboratory scale runs using 63 mm green hem-fir were compared using stickers 3, 6, 9.5 and 19 mm in thickness. Heating times increased as sticker thickness decreased. The 3 mm stickers produce too great a resistance to air flow and are not recommended. An increase in heating time of only 25 percent was found with 6 mm stickers compared to the standard 19 mm stickers. Further mill scale evaluation would determine if the costs associated with longer heating times with 6 mm stickers would be offset by the savings resulting from increased volume per kiln charge, reduced handling and repackaging costs.
Stickers
Pine wood nematodes - Control
Insects - Control by kiln sterilization
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Evaluation of lumber kilns and drying practices in a number of B.C. and Alberta sawmills

https://library.fpinnovations.ca/en/permalink/fpipub37116
Author
Mackay, J.F.Graham
Date
June 1985
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Mackay, J.F.Graham
Date
June 1985
Material Type
Research report
Physical Description
22 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Seasoning kiln drying
Seasoning
Drying
Kilns
British Columbia
Alberta
Series Number
W-344
Location
Vancouver, British Columbia
Language
English
Abstract
Seasoning - Kiln drying - Alberta
Seasoning - Kiln drying - British Columbia
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Improved technology for hem-fir drying : Progress report

https://library.fpinnovations.ca/en/permalink/fpipub37015
Author
Mackay, J.F.Graham
Date
March 1985
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Mackay, J.F.Graham
Date
March 1985
Material Type
Research report
Physical Description
16 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Tsuga Heterophylla
Tsuga
Seasoning kiln drying
Seasoning
Drying
Kilns
Balsam
Fir
Series Number
CFS Contract 02-40-12-403
W-221
Location
Vancouver, British Columbia
Language
English
Abstract
Hem-fir - Seasoning
Abies amabilis - Seasoning
Abies grandis - Seasoning
Tsuga heterophylla - Seasoning
Seasoning - Kiln drying
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Kiln drying lumber sawn from second-growth coastal Douglas-fir

https://library.fpinnovations.ca/en/permalink/fpipub37148
Author
Mackay, J.F.Graham
Date
August 1986
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Mackay, J.F.Graham
Date
August 1986
Material Type
Research report
Physical Description
8 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Second growth
Seasoning kiln drying
Seasoning
Pseudotsuga menziesii
Pseudotsuga
Drying
Kilns
Growth
Series Number
W-398
Location
Vancouver, British Columbia
Language
English
Abstract
Seasoning - Kiln drying, pseudotsuga menziesii - Seasoning, second growth
02-12-43-027
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23 records – page 1 of 3.