Selecting&Specifying WoodVeneer Copyright Materials
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Presentedbyyy,RichardShelleyLEEDAPID+C,Feb.26th 2014 © The Wood Products Council 2014
CourseDescription
“TheWoodProductsCouncil”is Thiscourseisregisteredwith aRegisteredProviderwithThe AIACES forcontinuing AmericanInstituteofArchitects professionaleducation.As ContinuingEducationSystems such,itdoesnotinclude (AIA/CES),Provider#G516. contentthatmaybedeemed orconstruedtobean approvalorendorsementby theAIAofanymaterialof This courseteaches the five critical elements of specifying hardwood veneer. Credit(s)earnedoncompletion constructionoranymethodor ofthiscoursewillbereportedto mannerof Youwilllearnhowtomatchveneerstyles AIACES for AIAmembers . handling,using,distributing, to achieve a desireddesign and how to CertificatesofCompletionfor ordealinginanymaterialor bothAIAmembersandnonͲAIA product. writeaclear,complete,correct membersareavailableupon ______specificationforaprojectusingfinewood request. ______veneer. Questionsrelatedtospecificmaterials, methods,andserviceswillbeaddressed attheconclusionofthispresentation. LearningObjectives Integrating Over 100 Years of Experience 1. ReviewhowtheAWIQualityStandardsevolved and Application in to the Arc hitec tura l Woo dwor k Stan dar ds. 2. Learnhowveneerisproducedfromatree. 3. Demonstrateveneermanufacturing techniques andtheimpactondesignandaestheticfactors. 4. Removetheconfusionaroundtheword “match”in veneerprojects . 5. Showhowpriceisaffectedbyspecies,cut,and gradeselected. 6. Sharethe“Big5”checklistforspecification success.
QSI evolved into the AWS Why Use Wood?
Natural NlNew layou t Renewable Information grouped and organized differently: Sustainable à General Recyclable à Product Original à Execution Responsibly Manufactured à Compliance Tree Anatomy Tree Anatomy
Sapwood into Heartwood
Tree Anatomy Medullaryyy Rays Tree Anatomy
Types of wood from the tree The location within the tree determines the grain pattern of the wood. Tree Anatomy
Veneer Manufacturing
Grain patterns of longwood Depending on the angle and direction of a cut, the grain appears in a variety of patterns and depth of color.
Types of Slicin g Types of Slicin g Plain or “Flat” Sliced Quarter Sliced
/HDIZLGWKGHSHQGVRQWKH This type of cut slices across &UHDWHVOLQHDUJUDLQZLWKQR ORJ VL]H DQG ORFDWLRQ ZLWKLQ the diameter creating the FDWKHGUDOV WKHIOLWFK 䇺cathedral䇻 in the grain. Types of Slicin g Quarter-Sliced Rift cut 5LIWVOLFLQJLVGRQHRQDURWDU\VOLFLQJ PDFKLQHJGHJUHHVWRWKHUDGLXV Flake Figure Visible in the Oaks
Narrow, Linear Grain Pattern
Types of Slicin g What was Intended? Rotary Sliced
This cut produces wide sheets, with a broad pattern, making this cut very difficult for matching. Types of Slicin g Types of Slicin g Rotary Sliced Rotary Sliced
It is t ypi calf l for cert ai n speci es, suc h as Sape le Pommele and Birdseye Maple, to be rotary cut in order to enhance their natural characteristics
Matching Terminology
BkBook CtCenter Slip Balance MhiThiMatching Techniques Mismatch Dimension EdEnd RiRunning Veneer Matching Metamerism Between Leaves (Barber-Poling)
Fronts and backs of veneers Book Match reflect light differently. Finish rarely helps More pronounced in some species
• Most common • Mirrored joints • Syypmmetrical pattern
Metamerism Metamerism a.k.a. 䇾Barber-Poling䇿
AWS Page: 73, 1.2.19.3 Veneer Matching Veneer Matching Slip Match End Match
• Often used with quarter or • Veneers are matched end to end to create a longer length. rift cut veneers • Leaves of veneer are • End to end and side to side placed side by side, face matching to cover large up expanses • Produces repeating grain • This process has limitations but joints do not match
Veneer Matching – End Match Veneer Matching Commercial Application Running Match Balance Match (within the entire panel)
• Widt h an d num ber o f veneers is not a • Each leaf is cut to equal width requirement. within the panel • Can be sequenced. • May be even or odd number • Outside veneers will of leaves, but no partial vary significantly. leaves • Leaves may be slipped or book ed
Center Match Special Matches (within panel)
• Diamond • Even number of veneer • Reverse Diamond leaves ppper panel. • Box • Joint at center of panel • Sunburst • Panel has a symmetrical • Book and Butt appearance • Borders may be added • MblMay be laser cu t Sppgqecial Matching Techniques Basic yields Commercial Application
Running Book 2500 sqft flitch à 36 panels 4䇻 x 8䇻
Balance Book à 24 pane ls 4䇻 x 8䇻
Center Balance à 18 panels 4䇻 x 8䇻
Factors which influence price
Veneer Cost $$$$ Veneer Yield $$$ Core Cost $$$ Specifying Veneer Core Yield $$ The Big 5 Matching Requirements $ Special Requirements $ Sppygecifying Veneer Grades Writing the Specification – The Big 5 Grades relate to 䇾American National Stand ardf d for H ard wood an ddD Decora tive 1. Select the Wood Specie – example: American Walnut Plywood䇿 (HPVA) 2. Choose the C u t – example: Plain Sliced or Quarter There are no AWI grades for veneer. AWI grades relate to completed products, 3. “Match” of Leaves – example: book match or slip match including finishes. Their veneer 4. “Match” of Panel – example: running or balanced specifications refer to HPVA grades.
5. “Match” Panel -to Panel – example: sequenced and numbered set
AWI Standards vs. Veneer Grade Grades used in Paneling
Grade: AWI Premium Grade, • AA See: Section 4 Sheet Products and Section 8 Wall http://www.hpva.org/ Surfacing, Architectural Woodwork Standards 1st • Edition A 1 - Species: Figured Cherry 2 - Cut: Plain sliced • B 3 - Match Between Leaves: Book 4 - Match Within Face: Balance and • Premium Center Match http://www.awinet.org/ 5 - Match Between Panels: Blueprint • Custom Match Finishing System: System 2 Pre- • Economy catalyzed Lacquer Sheen: 20 Sheen (satin) AWI Grades - Matching AWI Grades – Veneer & Core
• Premium • Premium • Book Matched • AA Grade • Balance Matched • MDF or PB • Sequenced, Numbered Sets • ¾䇿 Thickness ( 11/16䇿 core thickness) • Custom • Custom • Book Matched • A Grade • RiMthRunning Match • MDF or PB • Sequenced Pre-manufactured Sets • ½䇿 Thickness (7/16䇿 core thickness)
Veneer is cut from the best logs Grades Are Subjective
• Less than 7% of logs cut are cut into veneer. Area of interpretation • Less than 2% of the 7% are AA Grade. AA A B C Sppygecifying Veneer Sppygecifying Veneer Obtain a 䇺Live䇻 sample Design with Veneer in Mind
Your veneer supplier will be able to provide a sample of a Knowing the average raw material dimensions will help guide log in inventory according to your needs. You must design decisions provide the following information: Maximum raw veneer length available is 17 feet Most common lengths 10-12 feet Species, Cut and any aesthetic preferences Most veneer presses are maximum 10 feet MtMost parti tilbcle boar dis 8 – 10 fee t Quantity in total square footage (figuring an average 3 Most plywood is 8 feet to 1 waste factor for common species, MORE for special species) Maximum Length Theref ore, most paneld l desi gn dec is ions are ma de using 8䇻 to 10䇻 lengths. Required lineal footage (which must be sequential)
Sppygecifying Veneer – Summaryyp Tips Sppygecifying Veneer – Supplementary Writing the Specification – The Big 5 Writing the Specification – Useful Information
1. Figure ch oi ce – for example: fiddleback, ropey, or pommele 1. Select the Wood Specie – example: American Walnut 2. Special veneer matching - example: book & butt, diamond, 2. Choose the C u t – example: Plain Sliced or Quarter random, etc . 3. Maximum length – maximum length of finished panels 3. “Match” of Leaves – example: book match or slip match 4. Specify log and vendor for control (optional) 4. “Match” of Panel – example: running or balanced
5. “Match” Panel -to Panel – example: sequenced and numbered set Flitch Samples Flitch Samples Do Not
• Comparable to the pre-specified veneer in • Show the color of sanded veneer. that the customer sees what veneer looks • Show the progression of veneer widths within like. a flitch. • Ensure customer is aware that flitch samples representifitftt a specific amount of veneer; at a • Show the visual appearance of the match on specific length. the panel or sheet. • Understand the difference between the appearance of a flitch sample and a panel, or sheet.
Communication Communication
• Any information you can give your supplier is • EtkhthtEnsure your customer knows whathe wants. important. • Ensure yyyou know what your customer wants. • DiDrawings s hldblhould be clear, comp ltdlete, and correct, showing the vision. • Ensure your supplier knows what your
• Understand how your supplier is going to customer wants. make an order that has both 4䇻 x8䇻 panels and 5䇻 x 8䇻 panels. The AWS Qti?Questions? pporovides dest the This concludes The AmericanInstituteof How-To ArchitectsContinuing for your Educat ion Systems Course creative design RichardShelley AWI/Fetzer ArchitecturalWoodwork rshelley@fetzerwood. com