experience wood: empppowered to experiment - … · experience wood: empppowered to experiment ......
TRANSCRIPT
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Experience Wood:Empowered to Experimentp p
Barbara BellInnovation Support Specialist
David FellResearch Leader
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“The Wood Products Council” isa Registered Provider with TheAmerican Institute of Architects
This course is registered withAIA CES for continuingprofessional education. As
Continuing Education Systems(AIA/CES), Provider #G516.
such, it does not includecontent that may be deemedor construed to be anapproval or endorsement by
Credit(s) earned on completionof this course will be reported toAIA CES for AIA members
the AIA of any material ofconstruction or any method ormanner ofhandling, using, distributing,AIA CES for AIA members.
Certificates of Completion forboth AIA members and non AIAmembers are available uponrequest
or dealing in any material orproduct.___________________________________________request.Questions related to specific materials,methods, and services will be addressedat the conclusion of this presentation.
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Course Description
The use of wood as a finishing materialcreates a special connection between thebuilding and its occupants due to itsbiological context and natural variability.The visual, auditory, tactile and olfactoryexperiences is rooted in the way trees grow.Examining the “experience of wood” from ascientific perspective, this session willprovide a guide to the use of wood basedfinishes on attributes such as hardness,reflectance of visual surfaces, grainpatterns, light conditioning, acoustics, color,humidity control, and more.
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Learning Objectives
1. Examine the connection between wood’s anatomy and theh i l dit t til d lf t i f dhuman visual, auditory, tactile and olfactory experience of woodapplied in buildings.
2 Consider how lumber veneer and panel grades can yield very2. Consider how lumber, veneer and panel grades can yield verydifferent visual effects.
3. Apply technical information on wood species to the finishingstrategies of building projects.
4. Discuss case study examples where the knowledge of woody p ganatomy has translated into notable building design.
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Experience Wood:Empowered to Experimentp p
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Have you every really looked at Wood?
Building View
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Have you every really looked at Wood?
Grain and color contribute to buildings
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Have you every really looked at Wood?
Grain and color happen at the microscopic level
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Overview
1. Inspirationp
2. Understanding
3 A li ti3. Application
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I i tiInspiration
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Inspiration – History
2000190015002500BC4500BC7000BC
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Inspiration – Design
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Inspiration Environment
Resurgence in wood because of carbon story
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Inspiration – Human Interaction
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Inspiration – Visual
Wood is a preferred visual material bothcognitively and psychophysiologically.g y p y p y g y
Japanese study (Tsunetsuga et al 2007)Japanese study (Tsunetsuga et al. 2007)• Subjects preferred 45% room• Blood pressure and heart rate lowest in 90%
roomroom
Austrian Classroom Study (Keltz et al., 2011)• Over the course of a year students with woodOver the course of a year students with wood
furniture has greater stress lowering responsethan students with non wood desks
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Inspiration – Visual wooddreduces stress
Test (15 min.) Baseline (10 min.) Recovery (10 min.)
Stress activation (SCL) Stress responses per minute (SCR)
Acute stressApprehension stress Recovery
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But wood is variable…
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Stress activation Physiological
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Healthy – Self report (Cognitive)
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Natural Self report (Cognitive)
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Warm Self report (Cognitive)
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Inspiration – Tactile
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Inspiration – Tactile
Wood tactile responseproduced no increase insystolic blood pressureAcrylic surfaceAcrylic surface
• Raised BP when roomcold
Al min mAluminum• Raised BP at roomtemperature and whencold
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Inspiration – Olfactory
Cedar
Stepinit Design
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Inspiration – Olfactory
Shinrin yoku Forest BathingJapan, Korea, California
– alpha pinenealpha pinene(bronchodialator, antiinflamatory, antibiotic,memory, attention deficitdisorder)disorder)
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Inspiration – Auditory Sound Dampening
Perforations, revealsor slats, acoustic,backing
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Inspiration – Auditory
Sound Reflection – auditoriums, conference hallsSound Reflection auditoriums, conference halls
Material NRC
Steel .00 .10
Concrete .00 .05
G 05Gypsum .05
Wood .05 1.5
Plywood .10 1.5
Cork .10 1.5
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Inspiration – Auditory
Tonewood
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Inspiration Health
Stress reduction found:• Office study (Canada)• Home studies (Japan)• School study (Austria)
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Inspiration Health
Moisture buffering• Used extensively in interiors, wood acts as a passive
humidifier/air conditioner and can cut down on ventilation/costs
• Reduction of peak moisture loads by 10 25%• End grain permeable finishes• End grain, permeable finishes• CLT
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Inspiration Health
Shock Absorptionp
R d b d f ti• Reduces body fatigueby dissipating force
• Floors can be ‘sprung’for added flexibility
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U d t di dUnderstanding wood
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Wood was already a structure
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34
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Understanding ANISOTROPIC
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Understanding – Wood Anatomy
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Understanding Grain
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Understanding – Grain (Flat Grain)
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Understanding – Grain (Edge Grain)
Grain macro Grain Effect in use
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Understanding – Grain (End Grain)
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Understanding – Grain
Hardwoods
Understanding Grain
Oak is ring porousg
Red Alder is diffuse porousp
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Understanding
Veneer• More stable than solid wood for large flat areas, more economical,uses fine woods more judiciously
• Cannot be refinished• Rotary or sliced makes for different grain patterns
Rotary Cut
Quarter slicedFlat sliced Quarter sliced
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Understanding
Veneer• Veneers can be arranged in many ways
The Basics
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Understanding
Veneer• Veneers can be arranged in many ways
Pushing the MaterialPushing the Material
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Understanding – Color in Wood
Colour• Heartwood and sapwood• Color sorting• DurabilityDurability
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Understanding – Color in Wood0 +100
Mean = 67.3
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Range=26.7Low= 57.0 High=83.7
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Mean = 11.6Range=16.4Low= 2.9
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Mean = 29.4Range=11.4Low= 23 0
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High= 19.3
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Low 23.0High= 34.4
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Understanding – Visual
Photosensitivity
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Have you every really looked at Wood?Building View
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Understanding –Surface Reflectance
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Understanding – Divergent Features /Character wood
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Understanding Hardness
Hardness:Janka test
Species Janka Rating
Sugar maple 6400
White oak 6000
Black walnut 4500
Red Alder 2490
White pine 1700
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Understanding – Moisture Relations
• Shrinkage along the radial and tangential axis shouldb d d hil l i di l ibe accommodated while longitudinal movement isnegligible
• Tangential shrinkage is always greater than radial• The lower the ratio the better
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Understanding – Moisture Relations
Species Tangential % Radial % T/R ratio Volumetric %
Red Alder 7.3 4.4 1.6 12.6
Western Redcedar
5.0 2.4 2.1 6.8
White oak 10.5 5.6 1.9 16.3
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A li tiApplication
Durability
by Natureby Treatmentby Treatmentby Design
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Application Durability by Nature
• HardnessFlooring, stairs, mouldings and millworkJanka ratings for species choiceEdge grain over flat grain for flooringEdge grain over flat grain for flooring
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Application Durability by Nature
• Hardness endgrain
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Application Durability by Nature
• Strength• Hardness• Movement• DurabilityDurability
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Application – Durability by Treatment
• Finish SelectionWear resistanceChemical resistanceH d iHardeningReparabilityAdhesionUV resistance
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Application Durability by Treatment
• Impregnated WoodImproving hardnessImproving hardnessAcrylic resinAgricultural protein(corn or soy)
Paint Body
(corn or soy)
• Thermally Modified Wood• Baked at 160 245Baked at 160 245• Stable, brown in colour,
decay resistancecomparable to westerncomparable to westernred cedar
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Application Durability by Treatment
Charred woodPaint Body
Charred wood
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Application – Durability by Design
• Design for Movement• Design for Movement
Allow for movement– Slotted screwsSlotted screws– Frame and panel
Disguise the effects of movementDisguise the effects of movement– Bevelled doors– Tongue and groove panelling– Table top revealTable top reveal
Use Wood Strategically– Climate controlled spacesp– Panel products
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Application Durability by Design
D i f W• Design for Wear
Chair rails and wainscotingRounded edges and cornersLanding in entranceBaseboard detailsUse pattern and texture to ‘hide’ wear andtear
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Application – Durability by Design
D i t Di i W• Design to Disguise Wear
Use pattern and texture to ‘hide’ wear andptear
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Application – Durability by Design
D i t Di i W
Alain Wong, ComodoDesign office, Hong
• Design to Disguise Wear Kong.
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Application – Durability by Design
D i t Di i W• Design to Disguise Wear
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Application Durability by Design
• Design for Avoiding Wear
Ceilings– Tray ceilings, coffers, hung systems, slats
Walls– Paneling, wainscoting, chair rails, crownmoldings, beamsAdd ti d h idit t l– Add acoustics and humidity control
Window TreatmentsWood blinds shutters– Wood blinds, shutters
– Casts amber glow, UV absorptive
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Durability by designApplication Durability by Design
• Design for Avoiding Wear
Assemble StudioAssemble Studio,Melbourne.Joachim HollandDesigner.
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Durability by designApplication Durability by Design
• Design for Avoiding Wear
Photo: UBC Life SciencesPhoto: UBC Computer Engineering
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Application – Durability by Design
• Design forDesign forCleanability
Gloss finish
Paint Body
Gloss finishAvoid voidsAvoid flat surfaceswhere water canpool
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Application Durability by Design
• Design for the occupants
Faculty ofyForestry, UBC.
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Application – Durability by Design
Design for Longevity
• Create and• Create andemotionalconnection
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Application – Durability by Design
Design for Longevity
• Design a space• Design a spaceto evolve
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Application – Durability by Design
• Design for Longevity
Creative use of forestCreative use of forest‘waste’
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Application – Durability by Design
D i f R i R l t• Design for Repair or Replacement
l lBrisco Fine line stair application
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Application – Case StudiesVancouver Trade and Convention Centre, Vancouver BC. Designed byLMN Architects, fabricated by Island Precision Millwork, 2009.
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Application – Case Studies
Xthum Kwantlen,Kwantlen PolytechnicUniversity, Surrey BC.Design by Public Design,fabricated by PacificWoodworking, 2008.
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Application – Case Studies
Ob kki St P i t f P h C t d i dObakki Store Point of Purchase Counter, designedby Brent Comber and Mcfarlane, Green and BiggarArchitects, 2009.
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Q ti ?Questions?
This concludes The AmericanInstitute of Architects ContinuingEducation Systems Course
Barbara BellFPI ti
David FellFPI tiFPInnovations
[email protected]@fpinnovations.ca
This presentation was developed by a third party and is not funded byWoodWorks or the softwood lumber check offWoodWorks or the softwood lumber check off.