February 25, 2020 25, February Systems Framing Mass of Design Structural Timber Number: G516 Provider Texas Wood Symposium Design DCI Engineers DCI Green Associate LEED SE, PE, Dupras, Michael third party and is not funded by WoodWorks or the the or WoodWorks byfunded andnot is party third Disclaimer:Thiswaspresentation developed a by Softwood Lumber Board. Lumber Softwood ®
Texas Wood Design Symposium
Houston, Texas February 25, 2020 request. members are available upon AIA members and non Certificates of Completion for both CES this course be will reported to earnedCredit(s) on completion of (AIA/CES), Provider #G516. Continuing Education Systems American Institute of Architects Registered Provider with The “ The Wood Products Council for AIA members. - AIA ” is a” AIA at the conclusion of this presentation. at the conclusion addressed be will services and methods, materials, to specific related Questions ______dealing in any material or product. handling, using, distributing, or or any method or manner of AIA of any material of construction approval or endorsement by the deemed or construed to be an include content that may be education. As such, it does not CES This course is registered with for continuing professional AIA
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Description Course 1 LU/HSW detailing and construction best practices. fire for discussed. Other technical topics include will design of mass timber force timber (NLT). Applications for the use of these products in gravity timber (glulam), cross with a variety of mass timber products, including glued provide a detailed look at the structural design processes associated choice for sustainably ratios, are dimensionally stable, and are quickly becoming systems of Mass timber structural framing systems have high strength - resisting systems under modern building codes be will - resistance, connection options and design considerations, and - - minded designers. This presentation will laminated timber (CLT), and nail - - laminated laminated - to - weight
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Objectives Learning 4. 3. 2. 1. participantswill course, this ablebe the to: endof the At construction. as shrinkage and expansion, load path continuity, and speed of Highlight structural detailing best practices to address items such common mass timber framing systems. Review structural design steps for members and connections in considerations. mass timber products and review their unique design Compare structural properties and performance characteristics of possibilities as structural framing. Discuss mass timber products and building systems and their
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Why the Move to Mass Timber? Start with Why. with Start Photo:UBC
Texas Wood Design Symposium
Houston, Texas February 25, 2020 PUBLIC INTEREST INTEREST PUBLIC Why the Move to Mass Timber? SUSTAINABILITY AAESTHETICS WAY BETTER TOBUILD Photo: Jordan Benner
Texas Wood Design Symposium
Houston, Texas February 25, 2020 PUBLIC INTEREST INTEREST PUBLIC Why the Move to Mass Timber? SUSTAINABILITY Source: USGBC (2018) AESTHETICS AAESTHETICS WAY BETTER TOBUILD
Texas Wood Design Symposium
Houston, Texas February 25, 2020 PUBLIC INTEREST INTEREST PUBLIC RED LIST RED FREE Why the Move to Mass Timber? SUSTAINABILITY Photo: Oregon Forestry Resources Institute AESTHETICS AAESTHETICS WAY BETTER TOBUILD
Texas Wood Design Symposium
Houston, Texas February 25, 2020 PUBLIC INTEREST SUSTAINABILITY INTEREST PUBLIC Why the Move to Mass Timber? AESTHETICS AESTHETICS A BETTER WAY TO BUILD WAYTO BETTER A Photo: Mike Brewington
Texas Wood Design Symposium
Houston, Texas February 25, 2020 ©Ankrom PUBLIC INTEREST SUSTAINABILITY INTEREST PUBLIC Moisan Architects Why the Move to Mass Timber? AESTHETICS A BETTER WAY TO BUILD WAYTO BETTER A Photo: Casey Braunger
Texas Wood Design Symposium
Houston, Texas February 25, 2020 PUBLIC INTEREST SUSTAINABILITY INTEREST PUBLIC Why the Move to Mass Timber? AESTHETICS AESTHETICS A BETTER WAY TO BUILD WAYTO BETTER A Photo: Justin Fenton
Texas Wood Design Symposium
Houston, Texas February 25, 2020 PUBLIC INTEREST SUSTAINABILITY INTEREST PUBLIC AESTHETICS • • • • • • • Fewer on site on personnel Fewer traffic construction Reduced site Safer/quieter Fasterdelivery project BIM Leveraging delivery project Integrated opportunities Prefabrication Why the Move to Mass Timber? A BETTER WAY TO BUILD WAYTO BETTER A
Texas Wood Design Symposium
Houston, Texas February 25, 2020 PUBLIC INTEREST SUSTAINABILITY INTEREST PUBLIC AESTHETICS Credit: Swinerton Credit: Swinerton Why the Move to Mass Timber? Credit: DCI Engineers A BETTER WAY TO BUILD WAYTO BETTER A
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Overview • • • • • Additional Resources Additional Connections Fire Design Mass Timber Design Overview Mass Timber Materials • • • • • Tips for Success Considerations Special Structural Design Resources Codes
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Overview Mass Timber Materials
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Horizontal Elements Horizontal (Floors/Roofs) Mass Mass Timber Materials T&G Decking GLULAM GLT Mass Plywood Mass Plywood Nail Laminated Laminated Nail Panel (MPP) Panel Timber (NLT) Timber Dowel Laminated Laminated Dowel Cross Laminated Laminated Cross Timber (DLT) Timber Timber (CLT) Timber
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Horizontal Elements Horizontal (Floors/Roofs) Mass Mass Timber Materials T&G Decking GLULAM GLT Mass Plywood Mass Plywood Nail Laminated Laminated Nail Panel (MPP) Panel Timber (NLT) Timber Dowel Laminated Laminated Dowel Cross Laminated Laminated Cross Timber (DLT) Timber Timber (CLT) Timber
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Vertical Elements (Walls/Columns) Mass Mass Timber Materials Cross Laminated Laminated Cross Timber (CLT) Timber Glulam
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Photo:BradKahn GLULAM
Texas Wood Design Symposium
Houston, Texas February 25, 2020 GLULAM The The Workhorse! • • • • • Various species Various grades stress One columns and Beams nominal 2 Glu • p Glued, pressed laned e - - way spanning way lam inated inated from x material & • • • • Spruce Pine Southern Doug European Spruce • • “Black” “Black” Spruce “Canadian” Spruce - Fir - Pine - Fir
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Photo: Photo: Duncan Rawlinson GLULAM Thos L. Bryant Photo: Michael Dupras
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Design Codes Design Chapter 5 Specification Table 5A 5A Table Columns/Braces Supplement Table 5B 5B Table – Beams –
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Design Resources Design APA Glulam Product Guide
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Glulam Laminated Timber Glued Structural Chapter 5 –
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Glulam
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Glulam • Stress Grade Grade Stress – NDS Supplement TableSupplement NDS 5A
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Glulam DesignNotes • Primary Primary Axis Bending • • Lesser of Lesser X - X Properties C v and C L • Flatwise Bending Flatwise • • C Y - fu Y Properties Y
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Glulam • Beam layups Beam 24F - V4 24F - V8
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • Deflection • • Include long Include construction mass timber in design beam glulam often governs Deflection - term affects 3.5.2) (NDS (NDS eq. 3.5 eq. (NDS (glulam) - 1)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • Camber • • • • “TOP” label (if available) camber specific Manufacturer feet, radius) (in camber a specify consistent you Recommend APA Product Guide/APA Technical S550H Note • • • • Example: Example: Manufacturer X Do 5000 ft. for roof beams 3000 ft. for floor beams • 1310 ft.,1833 2620ft.3274 NOT camber multi - span span or cantilevered members (glulam)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • Strength Design (LRFD) Design Strength • • • Add NO you LRFD for Timber in designed typically using ASD, however • • • • C 5% Use LRFD load LRFD Use λ Φ K d f (Time Effect Factor) per NDS Table N3 (Format Factor)Conversion per NDS Table 2.3.5 (Strength Factor)Reduction per NDS Table 2.3.6 Factor - 15% strength controlled strength controlled additional load carrying capacity carrying load additional - combinations combinations per IBC members may gain may gain members (page 183) (glulam)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • Holes in Beams in Holes • • Reinforce Penetration with with Penetration Reinforce Timber Screws APA Technical V700A Note • https://mtcsolutions.com/resource/timber - reinforcement - guide/ (glulam)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Glulam Columns • • • Eccentricity Supplement NDS Factors Adjustment • • • • • • • Always use judgement use Always D/6? 5% min Not codified 5B Table C NDS Table 5.3.1 p
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Photo: Brad Kahn Photo:Brad NLT – Nail Laminated Laminated Nail Timber
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLT • • • • • • • Labor cost variable Labor cost Lower raw material roofs and Floors aesthetics Unique 2x edge on Nominal Typical spans recognized Code • • • Recommend Recommend panelizing assembled More if expensive field 10 - 16 feet – Nail Laminated Laminated Nail Timber • Design Considerations Design • • • • • Edge detailing Edge potential shrink/swell High Openings design Fire Sheathed diaphragm Sheathed
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Photo: Elizabeth Depwe NLT – Nail Laminated Laminated Nail Timber
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Design Codes Design Table 4A 4A Table Table 4C 4C Table – AllPinespeciesSo. except Table 4B 4B Table 2304.9.3 Mechanically2304.9.3 LaminatedDecking IBC – Mechanically Graded – Southern Pine Southern Supplement Chapter 4 4 Chapter Specification – Sawn Lumber Sawn
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Design Resources Design NLT Design Guide available at www.thinkwood.com
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLT – Nail Laminated Laminated Nail Timber Sawn Lumber Sawn Chapter 4 –
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLTNotes Design
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLT • IBC Table 2304.9.3.2 per nailing Prescriptive - Lamination Nailing
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLTNotes Design • • Shear Flexure • • NDS NDS Table 4.3.1 F NDS Table 4.3.1 F V b ’ factors adjustment per applicable all includes ’ factors adjustment per applicable all includes
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLTNotes Design • • depths (K depths (K NLT are laminations Additional NDS NDS per Factors Adjustment Table4.3.1 • • • Repetitive Factor (C Repetitive Factor Size (C NLTDesign (C braced as fully LAYUP ) and SECTION adjustment factors required when when required factors adjustment when mixing laminations of varying varying of laminations mixing when F ) based on single lamination single on ) based ) R not ) applies = 1.15 ) applies butt jointed at supports supports at jointed butt L =1.0)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLTNotes Design • • • ( Factor Layup Reduced strength and stiffness and strength Reduced waste lumber less produce May supports between joints lamination place layups “controlled” when 1.0 than Less K layup ) - IBC 2304.9.3
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLTNotes Design Continuous (multi Continuous span) (single Continuous - span)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLTNotes Design Random Controlled Layup Layup Controlled Random Layup rules per IBC 2304.9.2.5 and 2304.9.3.3 (Not permitted in permitted (Not TypeConstruction) IV
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLTNotes Design • • (K Factor Layup Reduced efficiency Reduced purposes acoustic or aesthetic for depth lamination Staggered • • • laminations from deeper contribution only on based Shear width stiffness lamination deeper Modifying full across section Not composite a fully • +/ - 33% strength & stiffness loss SECTION )
Texas Wood Design Symposium
Houston, Texas February 25, 2020 NLTNotes Design
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • Penetrations and openings and Penetrations • • greater than 6” greater openings for submittal penetration Require joint/spline panel NLT avoid should 2” than larger Penetrations Greater than18” Greater opening to18” 6” diameter to6” 2” Up to 2” diameter Opening Size Provide supplemental framing Provide reinforcement angle Provide local reinforcement screws opening) (reinforce groups of (3) or more as Okay, 6”spacing, minimum stagger Action (NLT)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • Penetrations and Openings and Penetrations Up to 6” to Up 6” to 18” Opening 18” to 6” (NLT)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • • • Weak options Vibration 3.5.2 long Consider • • • framing outrigger or provide screws reinforcement and nailing supplemental with to Up 6” (4 laminations) SystemstoStructural Framed Due Human Activity 11Guide AISC Design (L/480+) deflection load live elastic Limit - axis overhang axis - term deflection effects NDS deflection term per - Vibrations of Steel (NLT) -
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Tips For Success Success For Tips • • Moisture Management Plan Management Moisture NLT Panelize (on • • • • • • Protect wood end grain end Protect wood joints Tape for swell to gaps Introduce allow as possible toas Sheath soon restrain connections at panel type connection spline Provide IBC per 2304.9.3.2 requirements nailing toe equivalent to screws achieve timber Use • ¾” every 10 feet - site or off or site - site) (NLT) - to - panel panel -
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Photo: Michael Dupras CLT – Cross Laminated Timber
Texas Wood Design Symposium
Houston, Texas February 25, 2020 CLT Versatile! • • • • Typical spans stable Dimensionally Prefabricated/non IBC) (2015 recognized Code • • • • • • • Typicallygoverned shear or vibration 16’ 12’ Bi walls Shear Load roofs and Floors – - directional span directional - - 24’(composite) spans 20’(non spans - Cross Laminated Timber bearing walls - commodity - composite)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Photo: Michael Dupras CLT – Cross Laminated Timber
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Design Codes & Standards & Codes Design Table 4A 4A Table Table 4C 4C Table – AllPinespeciesSo. except Table 4B 4B Table 2303.1.4 IBC – Mechanically Graded – - Southern Pine Southern Structural Glued Cross Laminated Laminated Cross Glued TimberStructural PRG - 320 Laminated Timber 10 Chapter Specification – Cross Cross
Texas Wood Design Symposium
Houston, Texas February 25, 2020 CLTNotes Design • outlined in PRG layups for Standards MinimumPerformance - 320
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Design Resources Design CLT at available Handbook www.thinkwood.com
Texas Wood Design Symposium
Houston, Texas February 25, 2020 CLT – Cross Laminated Laminated Cross Timber Timber Laminated Cross Chapter 10 –
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Bending Stiffness Bearing Tension Comp. Shear CLTNotes Design
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Bending Stiffness Bearing Tension Comp. Shear CLTNotes Design (for deflection)(for (for Cp)(for (flatwise)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 CLTNotes Design • Bending (ASD) • F b ( S eff )’= )’= F MFR. b PER PER ( S eff )(C d )(C NDS PER PER m )(C T )( C L ) C L =1.0*
Texas Wood Design Symposium
Houston, Texas February 25, 2020 CLTNotes Design • Shear (ASD) • F S ( IbQ eff )’= )’= F S MFR. ( PER PER IbQ V s eff )(C m NDS PER PER )(C T ) No C d
Texas Wood Design Symposium
Houston, Texas February 25, 2020 CLTNotes Design • “Rolling Shear” “Rolling • • • Accounted for CLTAccounted in properties deformations shear high Produces G R ≈G • • F F 0 S b ( /10 ( S IbQ eff ) eff )
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • Deflection • • • • Provided by CLTProvided Mfr. K L = span (mandatory) deformations CLT to for account shear deflection s per per Table 10.4.1.1 (next slide) • EI eff , GA eff (CLT)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • Shear Deformation Deformation Shear (K Factor Adjustment (CLT) s )
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • Vibration • • • • CLT ( Handbook Simplified (for < spans ft.)15 Approach by CLTVibration provided spans controlled mfr. Often CLT controls spans • • Limit elastic Limit totalelastic deflection load (L/400) deflection load (L/600)Limit live elastic FPInnovation ), 7 Chapter (CLT)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Considerations Special • Vibration • • US US Mass Timber VibrationFloor Guide Design for not accounted variables Performance • • • • • • Release expected Release early 2020 Other interstitial elements Stiffness of supports Topping stiffnessslab (non (increased damping) Ceilings Continuous/multi • • Raised access floor Acoustic mat - span span benefits - composite) (CLT)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 CLTNotes Design • Compression (F • c,90 F C ) x ) x ( A parallel A transv )’= )’= F C ( MFR. PER PER A parallel )(C d )(C (F NDS PER PER m )(C c,0 ) x ) x T )( A C longit P )
Texas Wood Design Symposium
Houston, Texas February 25, 2020 CLTNotes Design • Compression • Columns Stability Factor, Stability Columns • • • F F* c=0.9 3.7.1per NDS cE c = (F = 0.822 (EI)’ = 0.822 MFR. PER PER c,0 )(C ( L PER NDS PER e d /d) )(C app 2 M )(C - min t ) C P (EI)’ app - min =0.5184(EI)’ app
Texas Wood Design Symposium
Houston, Texas February 25, 2020 • Special Considerations Considerations Special • Cantilevers • • Deflection by superposition by superposition Deflection relative to stiffness,relative (EI) direction each load Distribute independently direction each Analyze app (CLT)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 • Special Considerations Considerations Special Openings • • • • • narrow sections (C sections narrow Reduced stability at long supports near Reduced shear/bearing Identify critical sections weak Analyze ( equally openings around load Distribute • with panel edge panel with (load sharing?) relationship opening Consider - axis axis “strips” trib L <1.0) ) (CLT)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Tips for Success Success for Tips • • BIM for fabrication Optimization • • • • • • • Panel layout plan plan layout Panel 3 influence Connection pieces Minimize On ft a (on fiber expensive most Glulam size grid friendly timber a Adopt - ply considerations ply - • • • board CLT board supplier/manufacturer Optimize panel layout/spans to fabricator layout/spans panel Optimize (commodity) fiber wood cost from 50%+ 20x28 i.e. 16x30, – who controls? who (CLT) 3 basis) basis)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Tips for Success Success for Tips • • • • FEA vibration) cantilevers, (openings, tools out of items scope Understanding inspection Special approval Jurisdictional • • • • • • Dlubal protection Sitetimber management Sitemoisture mats acoustic Acoustics/ resources Leverage involvement Early (CLT)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Special Checks Fire Design Char Depth Char Rate Concepts Basic Fire Design Design Fire
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Fire Design • Construction Construction Types(IBC Table601)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Fire Design Codes AWC TR AWC - 10 NDS + commentary + – Chapter 16
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Fire Design Basics • • • • checked against average ultimate strength ultimate average against checked are stresses section (remaining) Reduced depth char by reduced are member of properties Sectional stiffness no and strength no have to assumed are member exposed of areas Charred surfaces exposed all on isformed Woodchar burns
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Fire Design Basics
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Char Rate Char • • for time determine to an in/hr. 1.5 adjusted and design wood for isused A based researched non on (a)based depth Char 2 hr.2 hr. 1.5 hr.1 t (hr.) 1.58 in/hr. 1.58 in/hr. 1.67 in/hr. 1.8 β eff eff (in/hr.) (NDS 16.2 - 1) nominal effective β (accelerated charring) zone and reduced section at corners account for reduced strength in heated 1.2 Factor for exposure time, t β t = exposure time (hr.) as required by IBC hour exposure n eff = = Nominal Effective - char rate ( rate char linear char rate ( rate char linear – 20% increase factor to char rate (in./hr.) (1.5 in/hr. for wood design) char rate (in./hr.), adjusted char rate ( rate char β n ) of of ) based on 1 β eff β ) ) -
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Char Depth Char • Effective char depth (aEffective depth char • • a to from Depth subtracted be char char (NDS) = Effective rate char ( char ) β eff each ) x exposure time (t) ) x exposure exposed side exposed
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Fire Design Checks • • Applicable adjustment factors adjustment Applicable (fromsupplement) values design Applicable • • • C K F b f , – , F C Average 16.2.2 (next table slide) strength per t v , , F C c fu , F bE , F cE
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Fire Design Checks
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Special • CLT • thickness (NDS 16.2.1.3) (NDS thickness Varying effective lamination on rate char based
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Special • CLT
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Special • Char bottom Char One NLT • Char as solidasChar depth a depth Topping present? Continuous/monolithic - member charring dimensional YES only char - side to 1/3 a 1/3 Char bottom Char Two Char individualChar laminations char depth a depth - charring dimensional sides depth on (2) (2) on depth NO + char - side to
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Special Considerations Special • Char Contraction Char • • section 1.5.1 section Refer to AWC TR element protective as a is used wood when to considered be Needs - 10
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Fire Design Notes • Glulam Beams
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Fire Design Notes • Glulam Beams (unbalanced shown) (unbalanced Beams Glulam *Similar for*Similar layup balanced
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Fire Design Notes • • • members but will still members add cost:still but will mayFire design not require larger structural frame resistance rating as primary require Connections same fire fire case requirements serviceability No for • • • • • • • Penetrations inspection Special Firecaulking layups Firebeam connections conceal to members Oversizing protection Connection means other by protect or depth char beyond connection Conceal
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Mass Mass Timber Connections • Considerations • • • • Fire Requirements Fire Delivery Project Cost Aesthetics (Owner) (Architect) (Contractor)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Mass Mass Timber Connections • Considerations • • • • Fire Requirements Fire Delivery Project Cost Aesthetics (Owner) (Architect) (Contractor)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Mass Mass Timber Connections • Butt Joint Butt CLTConnections Panel Half Spline - lap
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Mass Mass Timber Connections Engineered Engineered TimberScrews
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Tips For Success Success For Tips • • • lieu of lag screws lag of lieu in screws timber Specify Avoidwelding field process design inclusive Make • • • Faster installation Faster installation ductile More pre No/limited - drilling (Connections)
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Additional Resources Additional • • • awc.org thinkwood.com woodworks.org • • • • • • • • • Design Examples Design Free Calculators Software NLT Guide Design CLT Handbook Design Tools White Papers Resources Educational Project Support
Texas Wood Design Symposium
Houston, Texas February 25, 2020 Thank you! mdupras@dci Engineers DCI LEED SE, PE, Dupras, Michael Systems Course Education Institute of Architects This concludes - engineers.com The The American Continuing ® Green Associate Green Associate
97 Texas Wood Design Symposium
Houston, Texas February 25, 2020