technical guide for the design and construction of tall...

Erol Karacabeyli and Conroy Lum

NEWBuildS WorkshopVancouver, May 2015

Technical Guide for the Design and Construction of Tall Wood

Buildings in Canada

© 2013 FPInnovations. All rights reserved. Copying and redistribution prohibited. ® FPInnovations, its marks and logos are trademarks of FPInnovations.

Background – Tall wood buildings were always there!

~A century ago: Brick and Beam Buildings up to 9 storeys constructed in Canada Seismic Upgrading in Vancouver’s Gastown

(1980s, Karacabeyli and Wong) NewBuildS project (Carleton, Kruszelnicki)

reveals the code story FPI study (Koo) shows why these buildings

are still serving their clients

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Background

Before 1941, before the 1st NBCC…▫ Toronto, 8-storey, 1920

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Brick & Masonry

Heavy timber


Background

Before 1941, before the 1st NBCC…▫ Vancouver, 9-storey, 1905

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Kelly, Douglas and Co. Warehouse180,00 sq.ft.30 m height


Background

Modern tall wood buildings (TWBs)

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8 storeys office spacesin Austria.

Wood Innovation and Design Center in Prince George, BC.

10 storeys residential units in Australia.


Background

Modern tall wood buildings (TWBs)

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14 storeys Wood Building, Norway (under construction)

http://www.sweco.no/no/Norway/Nyheter/2014/Webcam_Treet/


Technical Guide for the Design and Construction of Tall Wood Buildings

Comprehensive document on this topic prepared by team of 85 researchers, design engineers, architects and code officials▫ Peer-reviewed

Helps pushing the boundaries ofwood construction by usinginnovative hybrid solutions

Funded by Natural ResourcesCanada (NRCan)

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Consistent with the design objectives and functional statements of the 2010 NBCC Performance-based philosophy

followed where possible

Aimed at defining a newtype of construction…

…MASS TIMBER

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Building SystemsBuilding Systems

Light-Frame

Mass TimberFrames

Mass TimberFrames

Mass Timber Plates

Mass Timber Plates

HybridHybrid


National Building Code of Canada

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Tall Wood Building Guide

Project

1. Considerations for conceptual design

2. Design considerations and input parameters for connections and assemblies

3. Advanced analysis and testing of systems for design

4. Building sound insulation and floor vibration control

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Structural and Serviceability

Lead and Co-AuthorsPeer Reviewers

Lead Author▫ Eric Karsh, Equilibrium

Co-Authors▫ Marjan Popovski, FPInnovations▫ Mohammad Mohammad, FPInnovations

Reviewers▫ Sylvain Gagnon, FPInnovations



Project

Considerations for conceptual design▫ Tall wood case studies▫ Conceptual structural systems▫ Practical guidelines for given heights▫ Foundations for tall wood buildings

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Lead Author▫ Eric Karsh, Equilibrium▫ Ilana Danzig, Equilibrium

Co-Authors▫ Kevin Below, Douglas Consultants▫ Sylvain Gagnon, FPInnovations▫ Michael Green, MGA

Peer Reviewers▫ Leung Chow, MMA▫ Gerald Epp, StructureCraft (Fast + Epp)▫ Michael McNaught, Stantec (CEI)▫ Grant Newfield, RJC



Project

Advanced analysis and testing of systems for design▫ National Building Code of Canada▫ Analysis and design for gravity loads▫ Analysis and design for earthquake

loads▫ Analysis and design for wind loads▫ Design methodology for low seismic

damage▫ Quality assurance

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Lead Author▫ Mahmoud Rezai, Equilibrium▫ Marjan Popovski, FPInnovations

Co-Authors▫ Lin Hu, FPInnovations▫ John Sherstobitoff, Ausenco Sandwell

Peer Reviewers▫ Ron DeVall, RJC▫ Erol Karacabeyli, FPInnovations▫ John van de Lindt, Colorado State U.▫ Jasmine Wang, CWC


Main pathways of analysis and design of tall wood structures

STRUCTURALDESIGN

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Project

Development of a fire safe alternative solution

Provisions for high buildings Fire resistance of assemblies and

components Flame spread rating of exposed

timber Fire separation Fire protection of service

penetrations and construction joints

Concealed spaces Spatial separation and exposure

protection ….

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Fire Safety and Protection


Lead Authors▫ Andrew Harmsworth, GHL▫ Christian Dagenais, FPInnovations

Co-Authors▫ Gary Chen, GHL▫ Robert Heikkila, CFT▫ Gary Lougheed, NRC▫ Jim Mehaffey, CHM

Peer Reviewers▫ Robert Gerard, Arup▫ George Hadjisophocleous, Carleton U.▫ Angela Lai, BTY▫ Tim Ryce, Deputy Chief Building Official▫ Peter Senez, Sereca Larden Muniak▫ Joseph Su, NRC▫ Geoff Triggs, LDMG


Achieving Fire Performance using Encapsulation

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Encapsulating for Strength Encapsulating for

Combustibility

What is thedifference?

Images: GHL Consultants Ltd.


Fire Resistance

CLT Handbook – Chapter 8 (2014 revision) CSA O86-14 – Annex B

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Conclusion

Given current knowledge on mass timber construction, development of sound alternative solutions for TWBs is feasible FPI Technical Design Guide provides

guidelines for developing such alternative solutions

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Conclusion

We are witnessing a renaissance in wood construction

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