EWPAA Structural Plywood and LVL Design Manual - Engineered ...

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EWPAA MembersPlywood and Laminated Veneer Lumber (LVL)Member Name Location Phone Fax WebAusply Pty Ltd. Australia / NSW +612 6922 7274 +612 6922 7824 www.ausply.comAustral Plywoods Pty Ltd. Australia / QLD +617 3426 8600 +617 3848 0646 www.australply.com.auBig River Group Pty Ltd. Australia / NSW +612 6644 0900 +612 6643 3328 www.bigrivertimbers.com.auBoral Hancock Plywood Australia / QLD +617 3432 6500 +617 3281 5293 www.boral.com.auBrown Wood Panels Australia / SA +618 8294 3877 +618 8294 6871 www.bwp.com.au,Carter Holt Harvey Woodproducts Australia(Plywood) – MyrtlefordAustralia / Vic +613 5751 9201 +613 5751 9296 www.chhwoodlogic.com.auCarter Holt Harvey Woodproducts Australia –Nangwarry LVLAustralia / SA +618 8721 2709 www.chhfuturebuild.comWesbeam Australia / WA +618 9306 0400 +618 9306 0444 www.wesbeam.com,Carter Holt Harvey Woodproducts - MarsdenPoint LVLNew Zealand +649 432 8800 +649 432 8830 www.chhfuturebuild.comCarter Holt Harvey Woodproducts (Plywood) -www.shadowclad.co.nzNew Zealand +647 886 2100 +647 886 0068Tokoroawww.ecoply.co.nzFiji Forest Industries Fiji +679 8811 088 +679 8813 088IPL (West Coast) Ltd New Zealand +643 762 6759 +643 762 6789Juken New Zealand Ltd. (Gisborne) New Zealand +646 869 1100 +646 869 1130Juken New Zealand Ltd. (Wairarapa) New Zealand +646 377 4944 +646 377 1166Nelson Pine Industries Ltd New Zealand +643 543 8800 +643 543 8890 www.nelsonpine.co.nzPNG Forest Products Ltd PNG +675 472 4944 +675 472 6017RH Group (PNG) Ltd PNG +675 325 7677 +675 323 0522 www.rhpng.com.pgValebasoga Tropikboards Ltd. Fiji +679 8814 286 +679 8813 848Wesbeam Australia / WA +618 9306 0400 +618 9306 0444 www.wesbeam.com,Particleboard and MDFMember Name Location Phone Fax WebAlpine MDF Industries Pty Ltd Australia / Vic +613 5721 3522 +613 5721 3588 www.alpinemdf.com.auCarter Holt Harvey Woodproducts Australia Australia / NSW 1300 658 828 +612 9468 5793 www.chhwoodlogic.com.auD & R Henderson Pty Ltd Australia / NSW +612 4577 4033 +612 4577 4759 www.drhenderson.com.auThe Laminex Group Australia / Vic +613 9848 4811 +613 9848 8158 www.thelaminexgroup.com.auTasmanian Wood Panels (Aust) Australia / TAS +613 9460 7766 +613 9460 7268Visit the EWPAA Website to get the latest information. www.ewp.asn.auVisit www.ewp.asn.au/register to ensure your products carry genuine EWPAA certification
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Structural Plywood & LVL Design Man
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Table of Contents1 Plywood & LVL -
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11 Plywood Stressed Skin Panels ...
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Table of FiguresFIGURE 4.1: Plywood
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Part OneProduct Production & Proper
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PeelingAfter conditioning, the logs
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Sanding, Trimming and BrandingAfter
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through to applications where aesth
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2.7 Identification CodeThe plywood
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2.10 Non Structural PlywoodsInterio
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3.5 Veneer QualityVeneer quality us
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the hygroscopic movement of structu
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effective an insulator as the wood
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5 Structural Plywood - Design Princ
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12 - 13 40015 - 19 45020 - 25 52026
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TABLE 5.3: Standard Structural Plyw
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TABLE 5.5: Indicative Stiffness Val
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Strength Limit StateStrength LimitS
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Application of Structural memberAll
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FIGURE 5.5 shows an I-beam defining
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j 2- Duration of Load Factor for Cr
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Using the theory of parallel axes a
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6 Structural LVL - Design Principle
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I (neutral axis(NA)-stiffness= (bd
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Serviceability Limit State:Calculat
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Strength Limit State:Strength Limit
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Equilibrium Moisture Content (EMC)P
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(c) For shear k 11 = 1.0(d) For com
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Chapter 6 AppendixSlenderness Co-Ef
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FIGURE A6.3: Continuous restraint a
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Stability factor.The stability fact
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7.4 Structural Plywood Flooring - D
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5. Critical Load Action EffectsLoad
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5. Serviceability limit state - Des
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7.10 Structural Plywood Residential
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Because of the obvious difficulty a
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1.2 m roof load width)0.25 kPa x 1.
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Concentrated Imposed Load (Q)M max
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5. Serviceability Limit Stateand [A
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8 Structural Plywood Webbed Box Bea
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AdhesivesBeams relying only on an a
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5. Check Beam Stiffness:Check beam
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1. Initial beam trial size:(a)(b)Fr
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Required nail spacing s = øN j / q
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Figure 8.5 shows a discontinuous pl
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A8Chapter 8 AppendixBending / Compr
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where:A= h3.5 3D .1032 N. mJ12.440.
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FIGURE A8.2: Guide for Selecting In
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Table A8.6: Unit-Load Deflection Sp
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9 Structural Plywood Diaphragms & S
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FIGURE 9.3 shows a plywood panel na
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The following are the design steps
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Wind force, w on diaphragm w = 1.86
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Converted to Limit States CapacityC
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4. Chord Size and SplicesThe chords
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Load/Nail (N)Nail Deformation (mm)2
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• The horizontal force is 1.9 x 2
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= 5 kN/m v oR = 15/5 = 3 kN/m107
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ELEVATIONFIGURE 9.12: Shows shear f
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As previously mentioned the shearwa
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Assuming the applied racking load t
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In this instance let the two panels
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A9 CHAPTER 9 APPENDIXPlate 1Plate 2
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Plate 7Plate 8Plate 9119
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REFERENCES CITED:1. Timber Shearwal
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“nailability” by increasing res
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(a) (b) (c)FIGURE 10.3: Actual and
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Re-arranging the torsion equation r
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The polar moment of area (I p ) of
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Design Example - Plywood Gusseted P
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• assuming width of lines paralle
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hence:where:ΦMj⎡ Ip⎤= (0.8 x1.
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A10 Chapter 10 AppendixPhotographs
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MOMENT JOINTSPlate 7Plate 8Plate 9(
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REFERENCES CITED:1. Investigation o
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11.2 MaterialsPlywoodPlywood used i
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FIGURE 11.3: Effective widths of pl
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Transformed SectionSince the plywoo
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FIGURE 11.5: Bending stresses in st
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FIGURE 11.6: Stressed skin panel tr
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Flexural Deflection Long Term Servi
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Compression SpliceUsing 17mm F11 st
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REFERENCES CITED:1. Design & Fabric
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12 Exotic Structural Forms12.1 Intr
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displacement between diaphragms eac
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The section modulus (Z) is:ZZ=Iy1=1
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FIGURE 12.9: A parabolic arch (not
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F AFFFASS= (374.4 + 166.4)kN= 540.8
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12.11 Hypar Design - GeometryTo dev
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FIGURE 12.16: Reactive force compon
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12.14 Methodology - Principal Membr
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Many braced dome geometries exist b
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θasphere= is the angle subtended b
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AndNNNxyxyP=L21P=L12P=L33L2P3⎤+
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• whether or not to force the ply
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A12Chapter 12 AppendixEXAMPLES OF E
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EXOTIC STRUCTURAL FORMS DESIGN AIDS
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Type 1 joints referred to in AS 172
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FIGURE 13.3: Two and Three member T
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SECTION 4 : AS 1720.1-1997 : Clause
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connection load carrying capacity c
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13.5 Design of Type 1 Nailed Connec
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The following unfactored loads are
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nnaa=nnr42=5= 9 rowsThe assumed val
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13.11 Design of Type 2 Screwed Conn
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The reasons k 13 and k 14 are not c
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Type of JointSeasoned TimberUnseaso
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13.16 Design of Type 2 Bolted Conne
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where:Δ = Δi +h33j14xh35Q *Qkpfor
Page 220 and 221: The exploded view in Figure 13.11 s
Page 222 and 223: FIGURE 13.12: Edge, end and bolt sp
Page 224 and 225: 13.21 Design of Type 2 Coach Screwe
Page 226 and 227: REFERENCES CITED:1. AS 1720.1-1997,
Page 228 and 229: Plate 3Plate 4219
Page 230 and 231: Plate 7Plate 8221
Page 232 and 233: 14 Noise Control14.1 IntroductionTh
Page 234 and 235: The absorption process of a single
Page 236 and 237: When it is required to add more tha
Page 238 and 239: FIGURE 14.5: Types of cavity wallsT
Page 240 and 241: 15 Condensation & Thermal Transmiss
Page 242 and 243: 15.4 Thermal TransmissionThermal tr
Page 244 and 245: 15.5 Thermal Transmission - Design
Page 246 and 247: REFERENCES CITED:1. Condensation, C
Page 248 and 249: The early fire hazard test indices
Page 250 and 251: ISO 9705 AND AS/NZS 3837These tests
Page 252 and 253: General InformationDesign of struct
Page 254 and 255: SpeciesAsh, Alpine - Eucalyptus del
Page 256 and 257: Results of recent tests organised b
Page 258 and 259: FlooringConstructionLVL(Substrates
Page 260 and 261: as expressed in the BCA.Species Ave
Page 262 and 263: ClosurePlywood Thickness for:Dougla
Page 264 and 265: Borers are rarely a problem with st
Page 266 and 267: HazardClassH1Exposure Specific serv
Page 268 and 269: 17.3 Durability and Finishing Appli
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