structural design of mass timber framing systems nw wood design symposium - seattle davin lewis, p.e., p.eng. fast + epp july 19, 2018 Disclaimer: This presentation was developed by a third party and is not funded by WoodWorks or the Softwood Lumber Board
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mass timber framing systems structural design of...structural design of mass timber framing systems nw wood design symposium -seattle davin lewis , p.e., p.eng. fast +epp july 19,
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structural design ofmass timber framing systems
nwwood designsymposium -seattle davinlewis, p.e., p.eng.fast +epp july19,2018Disclaimer: This presentation was developed by a third party and is not
funded by WoodWorks or the Softwood Lumber Board
This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without
“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.
coursedescription
Mass timber structural framing systems have highstrength-to-weight ratios, are dimensionally stable, and arequickly becoming systems of choice for sustainablyminded designers. This presentation will provide a detailedlook at the structural design processes associated with avariety of mass timber products, including glued-laminatedtimber (glulam), cross-laminated timber (CLT), and nail-laminated timber (NLT). Applications for the use of theseproducts in gravity force-resisting systems under modernbuilding codes will be discussed. Other technical topics willinclude use of mass timber panels as two-way spanningslabs, connection options and design considerations, anddetailing and construction best practices.
learningobjectives
At the end of this course, participants will be able to:
1. Discuss mass timber products and building systems andtheir possibilities as structural framing.
2. Compare structural properties and performancecharacteristics of mass timber products and review theirunique design considerations.
3. Review structural design steps for members andconnections in commonmass timber framing systems.
4. Highlight structural detailing best practices to address itemssuch as shrinkage and expansion, load path continuity, andspeed of construction.
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cross laminationsreduce strength and stiffnessin primary span direction
CLTdesign
gravityframing2-way
span capability
CLTdesign
CLTdesign
gravityframingdesign guidethinkwood.com
decisionsdecisions...
NLT may be most appropriate if:floor structure spans one wayfloor structure is curved in one directionbudget is tightstructure is an addition or alteration to an existing
building (no crane access from above)a less “manufactured” aesthetic is desired
gravityframing
decisionsdecisions...
GLT may be most appropriate if:floor structure spans one wayspans are long (no strength/stiffness reduction as
for NLT with butt joints)a clean aesthetic is desired
gravityframing
decisionsdecisions...
CLT may be most appropriate if:floor structure needs to span in two directions
(e.g. weak-axis cantilevers)a clean aesthetic is desiredaccommodating shrinkage and swelling during
construction is difficulttight tolerances are required