Skip header and navigation

117 records – page 1 of 6.

Duration of load effects on 2 x 4 spruce lumber in bending, tension and compression: fifth (final) combined data report. April 1991 to March 1992

https://library.fpinnovations.ca/en/permalink/fpipub5496
Author
Karacabeyli, Erol
Stroh, L.
Date
March 1992
Edition
37269
Material Type
Research report
Field
Sustainable Construction
Author
Karacabeyli, Erol
Stroh, L.
Date
March 1992
Edition
37269
Material Type
Research report
Physical Description
24 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Tension
Strength load bearing
Compression
Bending
Mechanical properties
Picea
Loads
Series Number
Forestry Canada Contract
Contract no. 1565K402
W-908
Location
Vancouver, British Columbia
Language
English
Abstract
This report is the fifth (and final) combined data report in a series of reports containing constant bending, tension and compression test results, prepared annually in partial fulfilment of the requirements of a Forestry Canada/Forintek Canada Corp. contract.
Strength - Load bearing - Influence of duration
Strength - Bending
Strength - Compression
Strength - Tension
Picea - Strength
Documents
Less detail

Rivet connection design with sawn lumber - progress report. April 1991 - March 1992

https://library.fpinnovations.ca/en/permalink/fpipub5497
Author
Karacabeyli, Erol
Fraser, Henley
Deacon, William (Bill)
Date
March 1992
Edition
37270
Material Type
Research report
Field
Sustainable Construction
Author
Karacabeyli, Erol
Fraser, Henley
Deacon, William (Bill)
Date
March 1992
Edition
37270
Material Type
Research report
Physical Description
27 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Nailing
Series Number
Forestry Canada No. 18
Contract no. 1510K019
W-909
Location
Vancouver, British Columbia
Language
English
Abstract
The Fastenings Subcommittee of the CSA Technical Committee (TC) on Engineering Design in Wood has identified a need to extend the use of glulam rivet connections to sawn timber with appropriate service condition factors, and to investigate the effect of plate thickness on joint capacity. A total of 640 lateral resistance tests on glulam rivet/sawn timber specimens were performed. The load carrying capacity of glulam rivet/sawn timber connections was determined in rivet yielding mode. Preliminary data analysis on the effect of species, loading type and direction, environmental conditions, density, waiting period between assembly and test, pre-drilling, and plate thickness on the load carrying capacity was performed. In the 1992/93 fiscal year, the remaining testing will be completed, findings will be discussed with the members of the Glulam Rivet Task Group, and then submitted to the Fasteners Subcommittee of CSA TC on Engineering Design in Wood.
Nails
Lumber - Nailing
Documents
Less detail

Relative density trends in second-growth lodgepole pine

https://library.fpinnovations.ca/en/permalink/fpipub5498
Author
Jozsa, Les A.
Sen, P.
Date
March 1992
Edition
37281
Material Type
Research report
Field
Sustainable Construction
Author
Jozsa, Les A.
Sen, P.
Date
March 1992
Edition
37281
Material Type
Research report
Physical Description
35 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Second growth
Pinus contorta
Pinus
Growth
Series Number
Forestry Canada No. 28
Contract no. 1212K023
W-934
Location
Vancouver, British Columbia
Language
English
Abstract
11 lodgepole pine study sites were selected in British Columbia, and Alberta for a study of basic wood properties. At each site 20 trees were selected, felled, and sampled at five height levels for relative density, fiber length, longitudinal shrinkage, lignin and extractives content determinations. This report presents wood relative density trends, stem sizes, and juvenile-mature wood distribution in 80 to 100 year-old lodgepole pine stands which grew under various stocking densities (500 - 2300 stems/hectare). In all three diameter classes sampled, a high degree of intra-ring density uniformity was evident, as low density earlywood and high density latewood ranged between 0.30 to 0.60 for western-red-cedar and Douglas-fir 0.25 to 0.80. This density homogeneity contributes to excellent machinability and veneer peeling qualities. When lodgepole pine trees of similar environment were compared at equal age and equal height level there was no relationship between growth rate and relative density. Comparatively low density wood in the large diameter trees was the result of normal physiological influence of the live crown. As crown dominance is reduced, through higher stocking densities, wood density is enhanced in the lower bole but at the expense of log size. And herein lies the paradox because both the solid wood and pulp and paper industry experts believe that industry will maximize profit by planning to grow, harvest, and process larger, rather than smaller, trees.
Pinus contorta Dougl. var. latifolia - Density
Second growth
Documents
Less detail

Yellow-cypress wood quality

https://library.fpinnovations.ca/en/permalink/fpipub5499
Author
Jozsa, Les A.
Sen, P.
Date
March 1992
Edition
37282
Material Type
Research report
Field
Sustainable Construction
Author
Jozsa, Les A.
Sen, P.
Date
March 1992
Edition
37282
Material Type
Research report
Physical Description
35 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood quality
Wood
Quality control
Qualitative analysis
Series Number
Forestry Canada No. 31
Contract no. 1212K022
W-935
Location
Vancouver, British Columbia
Language
English
Abstract
There is very little information about basic wood properties for yellow-cypress. This report presents wood relative density trends, stem sizes, heartwood-sapwood distribution, and longitudinal shrinkage characteristics in 13 old-growth, 10 second-growth, and 20 in off-site (out of its natural range) plantation-grown yellow cypress trees. Based on these comparisons and previous work at Forintek, yellow-cypress wood appears to be the most homogenous commercial softwood species in Canada. In terms of wood relative density yellow-cypress had comparatively high-density juvenile core-wood. The old-growth resource average density of 0.42 was met or surpassed in all three age classes. Yellow-cypress resource managers and the users of yellow- cypress wood can be confident that wood quality can be maintained in second-growth stands. Wood density comparisons with other softwoods and Japanese hinoki demonstrated why yellow-cypress wood is an excellent substitute for hinoki in terms of product properties.
Wood quality
Chamaecyparis nootkatensis
Documents
Less detail
Author
Hamilton, Peter
Date
December 1992
Material Type
Research report
Field
Fibre Supply
Author
Hamilton, Peter
Date
December 1992
Material Type
Research report
Physical Description
2 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Forestry
Efficiency
Costs
Series Number
Field Note ; General ; FNG No. 26
Language
English
Abstract
The Talkman (TM) is a voice-recognition data logger that allows one person to collect data while leaving his/her hands free for other tasks.
COMMUNICATION
Forest workers
EFFICIENCY
Documents
Less detail

Excavator attachments for site preparation in British Columbia

https://library.fpinnovations.ca/en/permalink/fpipub39937
Author
von der Gonna, Marc A.
Date
July 1992
Material Type
Research report
Field
Fibre Supply
Author
von der Gonna, Marc A.
Date
July 1992
Material Type
Research report
Physical Description
8 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Mechanical method
Scarifying equipment
British Columbia
Series Number
FO Technical Note Silviculture ; TN 180
Language
English
Abstract
FORESTS
Documents
Less detail

Harvesting low-volume pine stands in the Williams Lake timber supply area British Columbia

https://library.fpinnovations.ca/en/permalink/fpipub39944
Author
Andersson, Björn
Date
December 1992
Material Type
Research report
Field
Fibre Supply
Author
Andersson, Björn
Date
December 1992
Material Type
Research report
Physical Description
31 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Sites
Processing
Harvesting
British Columbia
Timber
FOP Technical Report
FPI TR
Series Number
FO Technical Report ; TR 106
Language
English
Abstract
HARVESTING
Old growth
Second growth
FELLING
Manual method
Mechanical method
PROCESSING
EXCAVATOR-FORWARDERS
LOADERS
LONG-BOOM LOADERS
Grapple yarders
PRODUCTIVITY
COSTS
PERFORMANCE
POST-HARVEST SITE ASSESSMENT
Coastal British Columbia
ACL 771B FELLER-BUNCHER
JOHN DEERE 992D LOADER
HITACHI EX-400 LOADER
MADILL 075 LONG-BOOM LOADER
Documents
Less detail

Mechanized tree-length harvesting using a KETO 150 harvester head

https://library.fpinnovations.ca/en/permalink/fpipub39952
Author
Gingras, Jean-François
Date
March 1992
Material Type
Research report
Field
Fibre Supply
Author
Gingras, Jean-François
Date
March 1992
Material Type
Research report
Physical Description
2 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Harvesting
Series Number
FO Field Note ; Felling 11
Language
English
Abstract
Harvesting systems
Shelterwood systems
SOFTWOODS
Comparison
PRODUCTIVITY
Site disturbance
New Brunswick
Documents
Less detail

Initial thinning trials with the Valmet Woodstar 546 harvester and forwarder

https://library.fpinnovations.ca/en/permalink/fpipub39956
Author
Mitchell, Janet L.
Date
January 1992
Material Type
Research report
Field
Fibre Supply
Author
Mitchell, Janet L.
Date
January 1992
Material Type
Research report
Physical Description
2 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Valmet
Productivity
Harvesting
Harvesters
British Columbia
Series Number
FO Field Note Silviculture ; FNS 47
Language
English
Abstract
HARVESTERS
Single grip harvesters
FORWARDERS
Machine evaluation
PRODUCTIVITY
VALMET 546H HARVESTER
VALMET 546F FORWARDER
VALMET 960 HARVESTING HEAD
Lodgepole pine
BRITISH COLUMBIA
Documents
Less detail

John Deere JD643 rubber-tired carrier with Rotosaw felling head : observations

https://library.fpinnovations.ca/en/permalink/fpipub39962
Author
Araki, Dennis
Date
November 1992
Material Type
Research report
Field
Fibre Supply
Author
Araki, Dennis
Date
November 1992
Material Type
Research report
Physical Description
2 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Rubber
Tires
Felling head
British Columbia
Series Number
FO Field Note Felling ; FNF 15
Language
English
Abstract
Debarking
SEPARATION
WOOD WASTE
Smallwood
Sortyards
Processors
PROTOTYPES
Portable systems
BRITISH COLUMBIA
DEAL PROCESSOR
Documents
Less detail

Evaluation of the Ultimate feller-processor

https://library.fpinnovations.ca/en/permalink/fpipub39970
Author
Araki, Dennis
Date
June 1992
Material Type
Research report
Field
Fibre Supply
Author
Araki, Dennis
Date
June 1992
Material Type
Research report
Physical Description
2 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Feller
Harvesting
Processors
Machines
Productivity
Costs
Series Number
FO Field Note ; Processing FNP 31
Language
English
Abstract
In-woods chipping
In-woods debarking
Satellite operations
Software
COSTS
Fuji/King debarker
Bruks 1512 drum chipper
Documents
Less detail

Steel arches for stream crossings

https://library.fpinnovations.ca/en/permalink/fpipub39973
Author
Provencher, Yves
Date
June 1992
Material Type
Research report
Field
Fibre Supply
Author
Provencher, Yves
Date
June 1992
Material Type
Research report
Physical Description
2 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Water crossings
Water
Steel
Roads
Alloy
Series Number
FO Field Note ; Roads & Bridges 30
Language
English
Abstract
Forest roads
Water crossings
Steel culverts
Culverts
Documents
Less detail

Strength of roof diaphragms

https://library.fpinnovations.ca/en/permalink/fpipub37357
Author
Stieda, C.K.A.
Date
February 1992
Material Type
Research report
Field
Sustainable Construction
Author
Stieda, C.K.A.
Date
February 1992
Material Type
Research report
Physical Description
1 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Panels
Design
Building construction
Analysis
Series Number
W-1143
Location
Vancouver, British Columbia
Language
English
Abstract
The objective is to broaden the market for sheathing panels by establishing shear strength values for the design of floor and roof diaphragms using 18.5mm and 20.5mm thick plywood panels. As a result of an emergency no work was done on this project.
Diaphragm analysis
Building construction - Design
Panels
Documents
Less detail

Resource assessment program development: problem analysis

https://library.fpinnovations.ca/en/permalink/fpipub923
Author
Middleton, G.R.
Date
March 1992
Edition
37283
Material Type
Research report
Field
Sustainable Construction
Author
Middleton, G.R.
Date
March 1992
Edition
37283
Material Type
Research report
Physical Description
14 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood quality
Wood
Utilization
Research
Renewable natural resources
Quality control
Qualitative analysis
Growth
Series Number
Forestry Canada No. 25
Contract no. 1212K020
W-936
Location
Vancouver, British Columbia
Language
English
Abstract
Forest resource issues in Canada vary by region, but in general, the forest industry is faced with a continuing decline in the volume and quality of available timber. Doing more with less will be the key to profitability. Changing, and increasingly fragmented markets, mean that industry must have improved information descriptive of the end- product potential of the current forest resource. Rapidly increasing expenditures on stand management make it imperative that governments and industry be provided with information describing how present silvicultural practices will impact on future wood quality. In some regions, where managed forests are approaching rotation age, information is needed to help industry examine its options for harvesting, processing and marketing this emerging resource. Forintek Canada Corp. has established a national program of resource assessment to meet the need for information that will permit the consideration of wood quality in processing, marketing and stand management decisions. The objective of this problem analysis was to ensure that resource characterization research is structured such that results of interdisciplinary work, done within Forintek or by cooperating agencies, can be successfully integrated to provide comprehensive answers to resource utilization and stand management questions. This report describes the development of the resource assessment research program, the goals established for it and the framework within which they will be accomplished.
Renewable natural resources
Utilization - Research
Wood quality
Growth - Influence on quality
Forest products - Research
Documents
Less detail

Bending strength properties of incised and preservative treated commercial 2 x 4 western softwood lumber

https://library.fpinnovations.ca/en/permalink/fpipub924
Author
Palka, L.C.
Morris, Paul I.
Walser, D.C.
Date
March 1992
Edition
37284
Material Type
Research report
Field
Sustainable Construction
Author
Palka, L.C.
Morris, Paul I.
Walser, D.C.
Date
March 1992
Edition
37284
Material Type
Research report
Physical Description
28 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Preservation
Mechanical properties
Series Number
Forestry Canada No. 4
Contract no. 1712K007
W-937
Location
Vancouver, British Columbia
Language
English
Abstract
This study evaluated the effect of two different incisors followed by chromated copper arsenate pressure treatment on the bending strength and stiffness of No. 2 and better nominal 2 x 4 inch (38 x 89 mm) spruce-pine-fir and hem-fir lumber. The double-density incising method, developed at Forintek, allows SPF to meet the CSA O80 wood preservation standards. The high-speed incisor was developed by Forintek for operation immediately behind the planer in a sawmill to produce a treatable lumber product. The prototype tested here employed two solid rollers to lay down two superimposed patterns of incisions at a density of 17500/m2. Approximately 2900 specimens of SPF and 1200 specimens of hem-fir were sorted into nine and four matched groups, respectively, according to their average flatwise modulus of elasticity values tested in centre point bending. The matched groups were then given various combinations of drying, incising and pressure treatments. Bending strength properties were tested. It was found that kiln-dried SPF and green hem-fir commercial dimension lumber, treated by the above processes, can be safely used for all structural purposes for which preservative treatment is required.
Preservation - Influence on mechanical properties
Preservation - Incising
Documents
Less detail

Resistance of mechanical connections to seismic loads : wood-to-concrete anchor bolts

https://library.fpinnovations.ca/en/permalink/fpipub982
Author
Stieda, C.K.A.
Date
February 1992
Edition
37356
Material Type
Research report
Field
Sustainable Construction
Author
Stieda, C.K.A.
Date
February 1992
Edition
37356
Material Type
Research report
Physical Description
3 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Building construction
Series Number
W-1142
Location
Vancouver, British Columbia
Language
English
Abstract
This Simple Progress Report combines the results of two separate 92/93 projects on the behaviour of nailed and bolted connections for wood structures subjected to seismic loads.
Earthquakes, Effect on building construction
Documents
Less detail

Boron wood preservative treatments - progress report

https://library.fpinnovations.ca/en/permalink/fpipub4304
Author
Byrne, Anthony (Tony)
Morris, Paul I.
Date
March 1992
Edition
41069
Material Type
Research report
Field
Sustainable Construction
Author
Byrne, Anthony (Tony)
Morris, Paul I.
Date
March 1992
Edition
41069
Material Type
Research report
Physical Description
2 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Preservatives boron
Preservatives
Series Number
Forestry Canada No. 37A
Contract no. 1712K023
W-938
Location
Vancouver, British Columbia
Language
English
Abstract
The objective of the program is to catalyze the development of boron as an environmentally acceptable chemical treatment and improve process technology to produce a boron-treated lumber product. There is a need for low environmental impact wood preservatives, particularly for the residential market. Although the hazards associated with treated wood may be negligible, the public perception of potential hazards may be sufficient to proscribe the future use of the present preservatives. Boron is an environmentally benign preservative which has been used for many years in New Zealand and Australia and has started to be used in the U.S.A. but is not yet used in Canada. There is a potential market for termite-proof wood for southern Ontario and boron promises to be a suitable candidate. Opportunities also exist in overseas markets for boron treated lumber provided that a rapid and cost effective diffusion process can be developed. Western softwoods, which are naturally wet species, particularly lend themselves to diffusion treatments with boron. Despite there being a good body of scientific literature available on borate treatment of wood there is a lack of basic technical knowledge on borate treatment of Canadian woods. This project seeks to address this need.
Preservatives - Boron
Documents
Less detail

Chemical analysis development - first of two reports. Analysis for boron in treated wood.

https://library.fpinnovations.ca/en/permalink/fpipub4306
Author
Johnson, E.L.
Ingram, Janet K.
Date
March 1992
Edition
41071
Material Type
Research report
Field
Sustainable Construction
Author
Johnson, E.L.
Ingram, Janet K.
Date
March 1992
Edition
41071
Material Type
Research report
Physical Description
12 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Preservatives boron
Preservatives
Analysis
Series Number
Forestry Canada No. 37
Contract no. 1712L022
W-941
Location
Vancouver, British Columbia
Language
English
Abstract
Methods for the analysis of boron in wood were reviewed and one, a method in which base titration of a mannitol/boron complex is done, was chosen for possible routine use. Method parameters were tested and the stages were modified to arrive at a routine which can determine boron content in wood within 5% accuracy. Hot water leaching of chip samples, 2.54 x 2.54 cm x 2 to 3 mm thick, of wood which has been given borate/antisapstain treatment is better than 95% efficient within four hours; this is as efficient as a ten-cycle extraction on a soxhlet apparatus. Using an automatic titrator, analysis for boron is done by titrating a mannitol complex of the boron in the extract. The simplicity, low expense, speed, and accuracy of this routine give it the advantage over several other methods. The aqueous extracts of wood, the mannitol reagent, and secondary components of boron treating formulations can all add to the apparent boron content of the wood sample; these factors are variable but generally total about 8 *g boric acid equivalent per cm2 of wood surface. The method is also suitable for the analysis of boron in heavily (preservative) treated wood.
Preservatives - Boron
Preservatives - Chemical analysis
Documents
Less detail

Arches en acier galvanisé pour franchir les cours d'eau

https://library.fpinnovations.ca/en/permalink/fpipub3220
Author
Provencher, Yves
Date
June 1992
Edition
39881
Material Type
Research report
Field
Fibre Supply
Author
Provencher, Yves
Date
June 1992
Edition
39881
Material Type
Research report
Physical Description
2 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Forestry
Subject
Water crossings
Water
Steel
Roads
Alloy
Series Number
Communiqué Technique No: Routes et Ponts ; CTRP 30
Language
French
Abstract
Forest roads
Water crossings
Steel culverts
Culverts
Abstract
Les opérations forestières en bordure de cours d'eau doivent être conformes aux lois provinciales mises en place pour protéger cetter ressource fragile. Les traverses de cours d'eau sont généralement régies par des règlements concernant les dimensions des structures, la protection des rives et enfin la migration des poissons.
Documents
Less detail

Avancement des travaux : projet d'optimisation d'une raboteuse : annee 1991-92

https://library.fpinnovations.ca/en/permalink/fpipub2257
Author
LeBlanc, G.
Date
August 1992
Edition
38805
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
LeBlanc, G.
Date
August 1992
Edition
38805
Material Type
Research report
Physical Description
21 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Digitalization
Subject
Planers
Planing
Optimization
Series Number
E-2718
Location
Ottawa, Ontario
Language
French
Abstract
Planers - Optimization
Planing
Raboteuse - Optimization
Documents
Less detail

117 records – page 1 of 6.