Today s agenda 1/30/2017. Mass timber What is it products Why use it appeal How does it work design topics Where is it used case studies What s next?

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1 Please add relevant logo here Introduction to Mass Timber Buildings Copyright Materials This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited. The Wood Products Council 2016 Archie Landreman WoodWorks Today s agenda Mass timber construction Mass timber What is it products Why use it appeal How does it work design topics Where is it used case studies What s next? mass timber 1

2 Mass timber is a category of framing styles often using small wood members formed into large panelized solid wood construction including CLT, NLT or glulam panels for floor, roof and wall framing Mass timber What is it? Building frame systems horizontal systems nlt panels Clt panels Glt panels T&g Decking Composite timber/concrete scl panels Mass timber systems Vertical systems Glulam frame Mass timber walls Photo Credit: Josh Partee Glulam Beams & Columns Vertical framing Cross Laminated Timber (CLT) walls Photo Credit: lendlease 2

3 Nail-Laminated Timber (NLT) Cross-Laminated Timber (CLT) horizontal framing Glue-Laminated Timber (GLT) glulam Tongue & groove decking (T&G) Timber concrete composite Structural composite Lumber Image source: structurecraft Photo Credit: alex schreyer Flexibility of spans and shapes Long span glulams Photo: American wood council Richmond Olympic Oval, Richmond, BC, Canada Design Team: Cannon Design Architecture, Fast + Epp, Glotman Simpson Photo Credit: Stephanie Tracey, Craig Carmichael, Jon Pesochin, KK Law Creative, Ziggy Welsch 3

4 Photo credit: structurecraft Nail-laminated timber (NLT) panels Photo credit: jonathan christian Nail-laminated timber (nlt) = a structural panel of square-edged dimensional lumber laminations (usually 2x) set on edge and nailed wide face together Recognized in IBC (mechanically laminated decking) Nds provides distribution factors for concentrated loads Can be used for floor, roof decking. Occasionally used for shaft walls Nail-laminated timber (NLT) panels Nail-laminated timber (NLT) panels Nail-laminated timber (NLT) panels Nlt panels can be built on-site/in-place or pre-fabricated offsite often exposed on underside Photo credit: woodworks Photo Credit: john stamets Photo Credit: structurecraft 4

5 Bullitt center Seattle, wa Bullitt center Seattle, wa Photo Credit: bullitt center Building info: Office building 4 stories mass timber over 2 stories concrete 52,000 sf Net zero Living building challenge certified Type IV construction 250 yr design life Completed 2013 Photo Credit: miller hull partnership Structural Frame: Douglas-Fir Glulam Beams and Columns 5-1/8 x15 to 12-1/4 x21 Bullitt center Seattle, wa 2x6 nlt floor deck 2x4 nlt roof deck Floor assembly top to bottom: 3 concrete topping, acoustical mat, wsp, 2x6 nlt Bullitt center Seattle, wa Photo Credit: John Stamets Photo Credit: John Stamets 5

6 Bullitt center Seattle, wa Glue-laminated timber (glt) panels The Bullitt Center is considered a market-rate, class A commercial office building Enhanced occupant experience Photo Credit: John Stamets Photo credit: unalam Glue-laminated timber (glt) panels Cross-laminated timber (clt) Image source: manasc isaac architects/fast + epp Glulam decking: Similar to deep glulam beams laid on their side Same code references and manufacturing standards as glulam beams and columns Be careful of design stresses and layups used spec uniform layup (all lams same species & grade) Image source: structurecraft 6

7 What is clt? Solid wood panel 3 layers min. of solid sawn lams 90 deg. cross-lams Similar to plywood sheathing Cross-laminated timber (clt) Cross-laminated timber (clt) 4 1/8 to 19 1/2 10 X40 8 X64 Cross-laminated timber (clt) Cross-laminated timber (clt) Photo Credit: DR Johnson Photo Credit: Sissi Slotover-Smutny Clt prefabrication Finished panels are planed, sanded, cut to size. Then openings are cut with precise CNC routers. Third party inspection at factory Custom engineered for material efficiency Custom designed for project Each panel numbered, delivered & installed in predetermined sequence 7

8 Common clt layups Cross-laminated timber (clt) Adhesives in clt Cross-laminated timber (clt) 3-ply 3-layer 5-ply 5-layer 7-ply 7-layer 9-ply 9-layer 7-ply 5-layer 9-ply 7-layer Adhesives used in CLT must meet the same standard as adhesives used in glulam: AITC CLT adhesives are also required to be evaluated for heat performance in accordance with DOC PS1. Several types of structural adhesives have been successfully used in CLT production: Phenolic types such as phenol-resorcinol formaldehyde Emulsion polymer isocyanate One-component polyurethane Candlewood suites Redstone arsenal, al Candlewood suites Redstone arsenal, al Image Credit: Lend Lease 62,600 sf, 4 story hotel, 92 private rooms CLT utilized for walls, roof panels, and floor panels 1,557 CLT Panels; Typical floor panel is 8 x50 & weighs 8,000 lbs Completed Late 2015 Image Credit: Lend Lease & schaefer 8

9 1. Introduction 2. Manufacturing 3. Structural 4. Lateral 5. Connections 6. DOL and Creep 7. Vibration 8. Fire 9. Sound 10. Enclosure 11. Environmental Cross-laminated timber (clt) 12. Lifting Lvl panel Structural composite lumber (scl) Lsl panel Photo credit: structurecraft Laminated veneer lumber (lvl) Laminated veneer lumber (lvl) Photo credit: brisco Photo credit: brisco 9

10 Mass timber appeal Reduced embodied carbon Stadhaus, London, UK Volume of wood used 950 m 3 Carbon sequestered and stored (CO 2 e) Avoided greenhouse gases (CO 2 e) Total potential carbon benefit (CO 2 e) 760 metric tons 320 metric tons 1,080 metric tons Questions? Archie Landreman archie@woodworks.org Architect: Waugh Thistleton Architects Photo credit: Waugh Thistleton Architects Carbon savings from the choice of wood in this one building are equivalent to: 1,615 passenger vehicles off the road for a year Enough energy to operate a home for 803 years Please add relevant logo here Mass Timber: A Bright Future Mass timber construction The future s looking up Archie Landreman WoodWorks Photo credit: naturally: wood 10

11 Umass design building Amherst, ma Umass design building Amherst, ma 4 story, 87,500 sf facility with: classrooms, lounges, meeting rooms, materials-testing lab, green-building lab, wood shop, digital fabrication lab, cafe, exhibit space, and library Image Credit: Leers Weinzapfel Associates Image: Leers Weinzapfel Associates t3 minneapolis Minneapolis, mn Type IV Construction 7 stories (6 Timber on 1 Concrete) 234,000 sf 2x8 NLT Floor Panels w/3 Concrete Topping Glulam Beam and Column Frame 20 x25 Grid t3 minneapolis Minneapolis, mn Image Credit: Michael Green Architects/Hines Group 11

12 t3 minneapolis Minneapolis, mn TALL Mass timber BUILDING COMPETITION Framework: An Urban + Rural Ecology Tall Wood Competition Winner Location: Pearl District, Portland, OR Height: 130 / 12 stories Total Building Area: 90,000 square feet Building Uses: Ground floor retail; 5 office floors; 5 apartment floors; Rooftop amenity Materials: Cross laminated timber floors and lateral force resisting system; Glue laminated beams and columns Image Credit: StructureCraft/Hines/Michael Green Architect OWNER: Beneficial State Bancorp ARCHITECT: LEVER Architecture ENGINEER: KPFF TALL Mass timber BUILDING COMPETITON Tall wood projects 475 West 18th: Setting the Stage for Innovation, Engineering and Architecture Tall Wood Competition Winner Location: West Chelsea, Manhattan, NY Height: 120 / 10 stories Total Building Area: 50,000 square feet Building Uses: Residential condominium with ground floor commercial space Materials: Mass timber columns, beams, shear walls and floors OWNER: Spiritos Properties ARCHITECT: SHoP Architects ENGINEER: ARUP Source: rethinkwood 12

13 Treet apartments Bergen, norway Completed STORIES 173 FT ~63K SQ.FT. BROCK COMMONS VANCOUVER, BC Source: Toward Taller Wood Buildings Symposium 2014 EXPECTED COMPLETION: SUMMER STORIES 174 FT 156K SQ.FT. Photo credit: acton ostry architects BROCK COMMONS VANCOUVER, BC BROCK COMMONS VANCOUVER, BC 5 PLY CLT PANELS, 2-WAY SPAN ~9 X13 GRID OF COLUMNS Photo credit: acton ostry architects 13

14 BROCK COMMONS VANCOUVER, BC 17 stories of timber installation Started june 6, 2016 Finished august 10, 2016 Questions? Archie Landreman Copyright Materials This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited. The Wood Products Council