Case Study: TallWood House at Brock Commons The University of British Columbia Presented on January 25, 2017 by Robert Jackson Disclaimer: This presentation was developed by a third party and is not funded by WoodWorks or the Softwood Lumber Board.
The Wood Products Council is a Registered Provider with The American Institute of Architects Continuing Education Systems (AIA/CES), Provider #G516. 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.
Course Description When completed in the spring of 2017, the 18-story TallWood House at Brock Commons will be the tallest contemporary mass wood building in the world. An exceptional example of the advantages of timber prefabrication, this project aspires to be the model for a future that includes extraordinarily ordinary mass wood buildings. This presentation will introduce the project, discuss the various design approaches considered and explain the process used to arrive at the final solution. While providing a focused discussion on the structural design and unique engineering challenges, the presenter will also provide an introduction to the fire/life safety approach, construction methods and project coordination.
Learning Objectives 1. Review the structural system in the context of design challenges and how/why the project team arrived at the final solution. 2. Understand the fire design approach for TallWood House. 3. Discuss the methods employed to deliver a highly prefabricated mass timber project and related construction benefits. 4. Review the cost and quality of the final solution, as well as lessons learned.
TALLWOOD HOUSE AT BROCK COMMONS Project Background Design Context Design Approach Building Overview Key Analysis / Design Issues Construction Conclusion
TALLWOOD HOUSE AT BROCK COMMONS Project Background Design Context Design Approach Building Overview Key Analysis / Design Issues Construction Conclusion
DESIGN TEAM Kamps Engineering Limited PROJECT BACKGROUND
TIMELINE 10 Months 2012 2013 Dec. 2014 Sept. 2015 Aug. 2015 Oct. 2015 May 2016 Sept. 2016 Summer 2017 Project Contemplation NRC Funding Announced Design Team Selected SSR Completed Tender Construction Start Concrete Complete, Timber Install Start Superstructure Complete Project Complete PROJECT BACKGROUND
EXTERNAL FUNDING National Resources Canada (NRCan) Forestry Innovation Investment Ministry of Forests, Lands, And Natural Resource Operations Binational Softwood Lumber Council PROJECT BACKGROUND
TALLWOOD HOUSE AT BROCK COMMONS Project Background Design Context Design Approach Building Overview Key Analysis / Design Issues Construction Conclusion
LOCATION/CLIMATE DESIGN CONTEXT
LOCATION/CLIMATE DESIGN CONTEXT
LOCATION/CLIMATE DESIGN CONTEXT
LOCATION/CLIMATE DESIGN CONTEXT
COST DESIGN CONTEXT
BUILDING CODES & MATERIAL STANDARDS BRITISH COLUMBIA BUILDING CODE 2012 ENGINEERING DESIGN IN WOOD DESIGN CONTEXT
PROCUREMENT DESIGN CONTEXT
SUPPLIERS DESIGN CONTEXT
SUPPLIERS CAPACITY NLT GLT STARTING POINT CLT LVL LSL = 3640 m 3 OF MASS TIMBER DESIGN CONTEXT
SUPPLIERS CAPABILITY DESIGN CONTEXT
TALLWOOD HOUSE AT BROCK COMMONS Project Background Design Context Design Approach Building Overview Key Analysis / Design Issues Construction Conclusion
DESIGN APPROACH KEEP IT SIMPLE DESIGN APPROACH CREDIT: SEAGATE
DESIGN APPROACH DESIGN APPROACH
DESIGN APPROACH DESIGN APPROACH
DESIGN APPROACH DESIGN APPROACH
TALLWOOD HOUSE AT BROCK COMMONS Project Background Design Context Design Approach Building Overview Key Analysis / Design Issues Construction Conclusion
SUPERSTRUCTURE BUILDING OVERVIEW CREDIT: CADMAKERS
SUPERSTRUCTURE - LATERAL BUILDING OVERVIEW CREDIT: CADMAKERS
SUPERSTRUCTURE - LATERAL BUILDING OVERVIEW CREDIT: SEAGATE
SUPERSTRUCTURE - GRAVITY BUILDING OVERVIEW CREDIT: CADMAKERS
SUPERSTRUCTURE - GRAVITY BUILDING OVERVIEW CREDIT: KK LAW
SUPERSTRUCTURE - GRAVITY BUILDING OVERVIEW CREDIT: SEAGATE
PANEL SUPERSTRUCTURE LAYOUT - GRAVITY BUILDING OVERVIEW
ARCHITECTURE SUPERSTRUCTURE - GRAVITY BUILDING OVERVIEW CREDIT: ACTON OSTRY
ARCHITECTURE SUPERSTRUCTURE - GRAVITY BUILDING OVERVIEW CREDIT: ACTON OSTRY
ENVELOPE BUILDING OVERVIEW CREDIT: ACTON OSTRY
ENVELOPE BUILDING OVERVIEW CREDIT: ACTON OSTRY
TALLWOOD HOUSE AT BROCK COMMONS Project Background Design Context Design Approach Superstructure Overview Key Analysis / Design Issues Construction Conclusion
BUILDING CODES & MATERIAL STANDARDS BCBC 2012 limited to 6-storeys UBC an Independent Jurisdiction British Columbia Safety Standards Branch Site Specific Regulation Building Permit KEY ANALYSIS/DESIGN ISSUES
BUILDING CODES & MATERIAL STANDARDS NBCC 2015 BCBC 2012 Vancouver Sa(2.0) = 0.170 SEISMIC ACCELLERATIONS INCREASED BY 53% NBCC 2015 Vancouver Sa(2.0) = 0.261 KEY ANALYSIS/DESIGN ISSUES
BUILDING CODES & MATERIAL STANDARDS PEER REVIEWS Merz Kley Partners Austria Timber Focused Read Jones Christofferson Vancouver Seismic Focused KEY ANALYSIS/DESIGN ISSUES
BUILDING CODES & MATERIAL STANDARDS KEY ANALYSIS/DESIGN ISSUES MICHAEL GREEN ARCHITECTURE
FIRE KEY ANALYSIS/DESIGN ISSUES
FIRE KEY ANALYSIS/DESIGN ISSUES
FIRE KEY ANALYSIS/DESIGN ISSUES
FIRE KEY ANALYSIS/DESIGN ISSUES
FIRE KEY ANALYSIS/DESIGN ISSUES
POINT SUPPORTED CLT KEY ANALYSIS/DESIGN ISSUES
POINT SUPPORTED CLT KEY ANALYSIS/DESIGN ISSUES
POINT SUPPORTED CLT KEY ANALYSIS/DESIGN ISSUES
POINT POINT SUPPORTED SUPPORTED CLT CLT KEY ANALYSIS/DESIGN ISSUES
POINT SUPPORTED CLT KEY ANALYSIS/DESIGN ISSUES
POINT SUPPORTED CLT KEY ANALYSIS/DESIGN ISSUES
POINT SUPPORTED CLT KEY ANALYSIS/DESIGN ISSUES
POINT SUPPORTED CLT KEY ANALYSIS/DESIGN ISSUES
POINT SUPPORTED CLT KEY ANALYSIS/DESIGN ISSUES
COLUMN TO COLUMN CONNECTIONS KEY ANALYSIS/DESIGN ISSUES
COLUMN TO COLUMN CONNECTIONS KEY ANALYSIS/DESIGN ISSUES
COLUMN TO COLUMN CONNECTIONS KEY ANALYSIS/DESIGN ISSUES
AXIAL COLUMN SHORTENING Δ1 Δ2 TIIMBER COLUMNS CONCRETE CORE TIIMBER COLUMNS Δ1 (CONCRETE) Δ2 (TIMBER) = SHRINKAGE + ELASTIC SHORTENING + CREEP = SHRINKAGE + ELASTIC SHORTENING + CREEP + JOINT SETTLEMENT KEY ANALYSIS/DESIGN ISSUES
AXIAL COLUMN SHORTENING Dead Load Axial Live Load Axial Longitudinal Shrinkage Creep and Joint Settlement KEY ANALYSIS/DESIGN ISSUES
AXIAL COLUMN SHORTENING TIME OF INSTALL MECHANICAL SHIM PACKAGE KEY ANALYSIS/DESIGN ISSUES
AXIAL COLUMN SHORTENING SOME TIME LATER MECHANICAL SHIM PACKAGE KEY ANALYSIS/DESIGN ISSUES
AXIAL COLUMN SHORTENING KEY ANALYSIS/DESIGN ISSUES
LATERAL DESIGN KEY ANALYSIS/DESIGN ISSUES
LATERAL DESIGN RdRo = 3.5 * 1.6 DUCTILE COUPLED CONCRETE SHEARWALLS ~R=5.6 MODE 1 = E/W ORTHOGONAL, T=2.0 SEC. MODE 2 = N/S ORTHOGONAL, T = 1.65 SEC. MODE 3 = TORSIONAL, T= 1.30 SEC. EQ = 4.5% OF WEIGHT KEY ANALYSIS/DESIGN ISSUES
CAPACITY DESIGN CAPACITY DESIGN NO YIELDING DESIGN DIAPHRAGM TO FLEXURAL CAPACITY OF CORES DESIGN CONNECTIONS, DRAGS, CHORDS, COLLECTORS WITH OVERSTRENGTH CAPACITY YIELDING KEY ANALYSIS/DESIGN ISSUES
CAPACITY DESIGN KEY ANALYSIS/DESIGN ISSUES
DIAPHRAGM DESIGN KEY ANALYSIS/DESIGN ISSUES
DIAPHRAGM DESIGN KEY ANALYSIS/DESIGN ISSUES
DIAPHRAGM DESIGN KEY ANALYSIS/DESIGN ISSUES
DIAPHRAGM DESIGN KEY ANALYSIS/DESIGN ISSUES
DIAPHRAGM DESIGN KEY ANALYSIS/DESIGN ISSUES
DIAPHRAGM DESIGN KEY ANALYSIS/DESIGN ISSUES
DYNAMIC WIND ACCELERATIONS KEY ANALYSIS/DESIGN ISSUES
DYNAMIC WIND ACCELERATIONS DAMPING? β= 1% to 3% KEY ANALYSIS/DESIGN ISSUES
PRE-FABRICATION KEY ANALYSIS/DESIGN ISSUES
PRE-FABRICATION KEY ANALYSIS/DESIGN ISSUES
INFORMATION FLOW DESIGN TEAM CADMAKERS (3D COORDINATOR) STRUCTURLAM (TIMBER SUPPLIER) 3D (.SAT and.ifc) models provided by CadMakers supplies general geometry including all mechanical penetrations. Use of a coordinated single model saved time and reduced confusion between the multiple parties. KEY ANALYSIS/DESIGN ISSUES
PRE-FABRICATION KEY ANALYSIS/DESIGN ISSUES
PRE-FABRICATION KEY ANALYSIS/DESIGN ISSUES
PRE-FABRICATION KEY ANALYSIS/DESIGN ISSUES
PRE-FABRICATION KEY ANALYSIS/DESIGN ISSUES
PRE-FABRICATION ~0.95 mmfbm in 2 months time. KEY ANALYSIS/DESIGN ISSUES
PRE-FABRICATION KEY ANALYSIS/DESIGN ISSUES
PRE-FABRICATION Fabrication arranged in a linear process for just in time delivery. Loads arranged on trucks to perfectly match installation sequence o Requires ample preplanning on the part of the project team KEY ANALYSIS/DESIGN ISSUES
TALLWOOD HOUSE AT BROCK COMMONS Project Background Design Context Design Approach Building Overview Key Analysis / Design Issues Construction Conclusion
MOCK-UP CONSTRUCTION
MOCK-UP CONSTRUCTION
MOCK-UP CONSTRUCTION
MOCK-UP PRECAST SIP WOOD FRAME/ METAL PANEL STEEL STUD/ METAL PANEL CONSTRUCTION
SEQUENCING CONSTRUCTION
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION
CONSTRUCTION CONSTRUCTION
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION CREDIT: SEAGATE
CONSTRUCTION CONSTRUCTION
CONSTRUCTION CONSTRUCTION
CONSTRUCTION CONSTRUCTION
CONSTRUCTION CONSTRUCTION CREDIT: ACTON OSTRY
CONSTRUCTION CONSTRUCTION CREDIT: ACTON OSTRY
TALLWOOD HOUSE AT BROCK COMMONS Project Background Design Context Design Approach Building Overview Key Analysis / Design Issues Construction Conclusion
PROGRESS TO DATE CONCLUSION CREDIT: NATURALLY WOOD
ACHIEVEMENTS WOOD VOLUME ESTIMATE 3600m 3 ACHIEVED 2233m 3 COST 192 $/ft 2 (2014) TBD TIMBER INSTALL ~2 FLOORS / WEEK 2 FLOORS / WEEK RAIN A LITTLE A LOT! TOLERANCES +/- 1mm +/- 1mm CONCLUSION
LESSONS LEARNED Efficient system suitable for student residences, microapartments or hotels Wider column grid possible with wider panels Keep things simple. Involve your trades early. 3D coordination paid off. Kit-Of-Parts prefabrication has advantages. CONCLUSION
Questions? This concludes The American Institute of Architects Continuing Education Systems Course Robert Jackson Fast + Epp Structural Engineers rjackson@fastepp.com