EXPERIENCES OF A MASS TIMBER BUILDER

Transcription

1 EXPERIENCES OF A MASS TIMBER BUILDER Jeff Morrow Lendlease American Wood Council Webinar August 16, 2018 Disclaimer: This presentation was developed by a third party and is not funded by the American Wood Council or the Softwood Lumber Board. The American Wood Council is a Registered Provider with the American Institute of Architects Continuing Education Systems (AIA/CES), Provider # Credit(s) earned on completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-aia members are available upon request. This course is registered with AIA CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation. 2 1

2 Polling Question 1. What is your profession? a) Architect b) Engineer c) Code Official d) Fire Service e) Other Outline 1. CLT Projects Around the World 2. CLT in the Americas 3. Why CLT? 4. What s Next? 4 2

3 COURSE DESCRIPTION 5 The concept of taller wood structures has captured widespread attention. Some see expanding timber use as one of the few ways to reach ambitious carbon reduction goals; others are inspired by new aesthetic opportunities but Lendlease, an international construction and development firm, sees the use of mass timber for mid- and highrise structures as a way to build higher quality buildings, faster and safer. As one of the most experienced contractors of mass timber buildings in the US, Lendlease will offer insights on a proposed change to the 2021 International Building Code that would see increased height and story allowances for mass timber structures. LEARNING OBJECTIVES 6 1. Review worldwide mass timber project examples built by Lendlease, comparing construction techniques and carbon advantages to traditional building methods. 2. Understand the ICC Ad Hoc Committee s code change proposal for the 2021 International Building Code (IBC) that could allow taller wood buildings. 3. Learn where to find information and research that supports the new 2021 IBC Code Change. 4. Recognize how mass timber for mid- and high-rise structures provides for higher quality buildings to be constructed faster and safer. 3

4 ICONIC PROJECTS Trump International Hotel & Tower 2. National September 11 Memorial & Museum 3. US Court of Appeals Restoration 4. Statue of Liberty Restoration 5. American Museum of Natural History, Various 6. Military Housing Communities 7. New York-Presbyterian Hospital, Various Park Avenue Leonard 10. Grand Central Terminal Revitalization 11. Jacob K. Javits Convention Center Expansion Time Warner Center Citi Field, NY Mets Stadium 14. Privatized Army Lodging, CLT Summer Olympic Games 16. Oceanwide Plaza 17. Los Angeles City Hall Restoration 4

5 Construction Management Design Assist Design Build Development Construction Management Design Assist Design Build Development 5

6 11 CLT Projects Around the World GLOBAL CLT PROJECTS 12 Forte Melbourne 6

7 GLOBAL CLT PROJECTS 13 Forte Melbourne 14 7

8 GLOBAL CLT PROJECTS 15 Library at the Dock Melbourne GLOBAL CLT PROJECTS 16 Library at the Dock Melbourne 8

9 GLOBAL CLT PROJECTS 17 Cobalt Place London GLOBAL CLT PROJECTS 18 International House Sydney 9

10 GLOBAL CLT PROJECTS 19 International House Sydney GLOBAL CLT PROJECTS 20 International House Sydney 10

11 GLOBAL CLT PROJECTS 21 International House Sydney GLOBAL CLT PROJECTS King Brisbane 10 Stories (9 office, 1 retail) November 2018 Completion 11

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14 WATERBANK, PERTH THE TIMBERYARD UK (Develop to Rent) 14

15 GLOBAL CLT PROJECTS 29 Google HQ UK 11 Floors Above Ground 2 story Basement GLOBAL CLT PROJECTS 30 Google HQ UK 870,000 sq. ft. Gross Exterior Area (GEA) 651,000 sq. ft. Net Interior Area (NIA) 15

16 LENDLEASE CLT GLOBAL PROJECTS 31 Google HQ UK.. Polling Question 2. The international projects discussed all utilize cross-laminated timber (CLT). a) True b) False 16

17 33 CLT in the Americas 34 17

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20 39 Ft. Drum, NY 20

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24 WHAT S DONE 48 Completed Army CLT Hotels Location # of Floors Room Count SF Construction Start Redstone Arsenal, AL 4 Story 92 62,688 Completed

25 WHAT S NEXT?? 49 Future Army CLT Hotels Location # of Floors Room Count SF Construction Start Ft. Drum, NY 4 Story 99 65,776 Fall 2017 (on going) JB Lewis McChord, WA 4 Story ,879 Fall 2018 Ft. Jackson, SC 2 5 Story ,527 Winter 2019 Ft. Bragg, NC 2 6 Story ,046 Summer 2020 TOTAL 1, ,228 25

26 Polling Question 3. By 2021, how many hotel buildings in the U.S. are projected to be built utilizing CLT as the primary structural material? a. Two b. Four c. Seven d. Eight 52 Why CLT? 26

27 53 MARKET SECTOR STRATEGIES 54 The Sweet Spot CLT should be strongly considered when a project experiences 3 of these 5 conditions. 27

28 The CLT Optimal Spectrum Today MARKET SECTOR STRATEGIES 55 Residential / Hospitality 1-5 Stories Wood Stick Frame Metal Stud Frame Residential Office Hospitality 6-12 Stories CLT Optimal Residential / Office 12+ Concrete/Steel Polling Question 4. CLT should be strongly considered when a project experiences which of the following conditions? a. Labor scarcity b. Crane shortage c. Schedule constraints d. All of the above e. a. and c. only 28

29 57 Benefits REDSTONE ARSENAL CLT PERFORMANCE COMPARISON VS. PREVIOUS METAL STUD NEW BUILD HOTELS IN PAL PORTFOLIO 58 The Case for CLT / Modular Construction PAL PORTFOLIO TYPICAL NEW PAL HOTEL (ACTUAL*) REDSTONE ARSENAL (ACTUAL) DIFFERENCE Gross SF Average # of Employees Structural Duration (Days) Structural Man Hours Structural Production Rate/Day (SF) Overall Schedule 54,891 62, % 18 (Peak 26) 10 (Peak 11) -43% % 14,735 8,203-44% 460 SF/day 803 SF/day +75% 15 months 12 months -20% * PAL New Build Hotel Historical Average 29

30 TRIPLE BOTTOM LINE SUSTAINABILITY HIGHLIGHTS 59 Economic 37% Faster than Traditional Metal Stud Construction Cost Neutral to Metal Stud Framing (On Military Installations) Environmental 31% more energy efficient than previous PAL New Hotels of similar size per current energy model 1,276 tons carbon sequestered (1,656 m3 of timber used) Social Unemployed Veterans were upskilled in the construction trades. Eliminated exposure to falls for workers from elevated heights. MASS TIMBER BEGINNING OF A NEW INDUSTRY 60 30

31 61 Cross Laminated Timber in the US Positively disrupting traditional construction of mid rise structures 62 31

32 63 What s Next 32

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35 69 ICC PROCEDURE Test Types Fire Resistive Component Testing E119 Fire Full Tested Assemblies E119 Fire Full Scale Encased Compartment Comparison Testing System Fire Resistance Testing US Demonstration Project Penetration Testing Full scale Mass Timber Shaft Demonstration Fire Flame Spread Testing ASTME84 Testing Agencies FPInnovations/ NRC / Southwest Research Institute/ Independent Labs Underwriters Laboratory NRC CNRC ATF & FPL FPInnovations NRC CNRC/ FPInnovations FPInnovations/ Independent Labs

36 TALL WOOD BUILDING AD HOC COMMITTEE PROPOSAL 71 Type of Construction IV HT (Existing) Height # of Stories Exposed Mass Timber Sprinklers Primary Frame FRR Floor FRR Stair Tower Concealed Spaces Fully Exposed Yes NR HT Mass Timber Not Permitted IV C Proposed Fully Exposed Yes 2 hours 2 hours Mass Timber Permitted IV B Proposed Partially Exposed Yes 2 hours 2 hours Mass Timber Permitted IV A Proposed Fully Protected Yes 3 hours 2 hours Noncombustible Permitted Courtesy of American Wood Council ICC AD HOC COMMITTEE ON TALL WOOD BUILDINGS Tall Mass Timber Code Changes by Section Number 1. IBC Section Type IV construction (G108-18) 2. IBC Section Tested noncombustible protection contribution (FS5-18) 3. IBC Section Calculated noncombustible protection contribution (FS81-18) 4. IBC Section Sealing of adjacent mass timber elements (FS6-18) 5. IBC Section Fireblocking materials (FS73-18) 6. IBC Section High rise sprinkler water supply (G28-18) 7. IFC Section Owner s responsibility (F88-18) 8. IFC Section Fire safety during construction (F266-18) 36

37 ICC AD HOC COMMITTEE ON TALL WOOD BUILDINGS Tall Mass Timber Code Changes by Section Number 9. IBC Table (G75-18) Allowable Building Height 10. IBC Table (G80-18) Allowable Number of Stories 11. IBC Table (G84-18) Allowable Area Factor 12. IBC Section Special construction (G146-18) 13. IBC Appendix D Fire Districts (G152-18) 14. IBC Sections and Fire barriers at separated occupancies and incidental uses (G89-18) ICC PROCEDURE 74 The 8-Step I-Code Development Cycle Step 1: January 8 Final Proposed Language submitted to ICC COMPLETED Step 2: February 28 Changes are posted for Public Viewing COMPLETED Step 3: April Committee Action Public Hearing Columbus, OH Floor Discussion The code change proposals are considered and discussed at the floor discussion COMPLETED Committee Action The code development committee makes a recommendation on the code change proposal disposition PASSED Assembly Action ICC members in attendance can challenge committee actions - Online assembly floor motion voting period is 2 weeks and begins approximately 2 weeks after the hearings close. NOT CHALLENGED 37

38 75 ICC PROCEDURE 76 The 8-Step I-Code Development Cycle Step 4: May 30 Committee Action Hearing results posted COMPLETED Step 5: June 1 - July 16 Public Comments Sought on Committee Action Hearing Results COMPLETED Step 6: August 31 Public Comments Posted Step 7: October Public Comment Hearing and Vote* Step 8: Fall 2020 New Edition is Published 38

39 ICC PROCEDURE 77 For Detailed Information 7sjhZuOfbOEqYrp8zvRhc97W5tUbcR BLAST TESTING 78 For Detailed Information (Blast Testing) Summary Info WoodWorks-Wood-Products-Council-April pdf Phase 1 Testing Videos 5tUbcR Phase 2 Testing Videos 1xUtlfUU2u3fg/playlists?sort=dd&shelf_id=1&view=50 39

40 WHAT CAN YOU DO 79 Changing the Codes Engage Educate Enroll Empower Polling Question 5. For certain occupancies, which is true regarding maximum height and number of stories for proposed types of construction? a) Type IV-A can be 270 and 18 stories b) Type IV-B can be 180 and 12 stories c) Type IV-C can be 85 and 9 stories d) All of the above 40

41 81 Moving Forward MASS TIMBER BEGINNING OF A NEW INDUSTRY 82 41

42 MASS TIMBER BEGINNING OF A NEW INDUSTRY 83 SIGNOFF 84 Questions? This concludes The American Institute of Architects Continuing Education Systems Course Jeff Morrow Lendlease Jeff.Morrow@lendlease.com 42