mass timber construction case study on: site logistics and ... · source: naada architects. hybrid...
TRANSCRIPT
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Shawmut Design and Construction
Presented by:Justin Deveau
Mass Timber Construction Case Study on: Site Logisticsand Field Considerations
TOGETHER.LET’S BUILD.
1.0 Case Study Project Context
2.0 Preconstruction ConsiderationsInfluence Design to Optimize Field OperationsField Logistics and Sequencing
3.0 Execution
4.0 Lessons Learned5.0 Final Thoughts
AGENDA
Disclaimer: This presentation was developed by a third party and is not funded by WoodWorks or the Softwood Lumber Board.
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PROJECT CONTEXT
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• Schedule and Speed
• Aggressive Institution Wide Sustainability Goals
• Adjacent Concrete Flat Plate Dormitories
• Design Goal to Create Artist Loft Experience
• Interest in Mass Timber
Key Project Challenges
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Project Schedule
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Integrated Project Delivery
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Choosing by Advantages
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PRECONSTRUCTION CONSIDERATIONS
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Typical Cross-Section
Source: NAADA Architects
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Hybrid Steel – CLT Construction
• Steel Frame with CLT Slabs
• One-way CLT Panels – Entire Building Width
• Construction Type
• Type 1B Construction – Below Lvl 2
• Type 3B Construction – Above Lvl 2
• Exposed CLT Ceilings
• Topping slab and Acoustic Isolation Mat for Sound Isolation
FEATURES
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Floor Assembly – Acoustic Preparation
• Sound Transmission Class >= 50
• Impact Insulation Class >=50
IBC 2015 SOUND TRANSMISSION (1207)
• USG Levelrock SAM-N25 Ultra – Sound Attenuation Mat
• USG Levelrock Sound Reduction Board
• USG Levelrock 3500 Floor Underlayment (2” min thickness)
FINAL ASSEMBLY (USG PRODUCTS):
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Panel Layout Optimization
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MEP Coordination
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MEP Coordination
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FIELD EXECUTION
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Key Issues• Mix of Trades – Wood
and Steel Erector
• Fasteners Chosen for Speed
• Most Holes Field Drilled – Simplifies Coordination
• Diaphragm Design Using Spline Connectors
• No Welded Connection
• Laydown / Trucking Plan
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• Lay Down Strategies
• Decoupling delivery from jobsite
Demand
• Critical Artery for University /
Community (Off Hour Delivery)
• Street and Sidewalk Closures
• Crane Position and Obstructions
• No-fly Zones
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All Field Connections Bolted
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Weak Axis Column Bracing at Floors
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Unframed Openings in Floors
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Moisture Management Plan Summary
• Expectations
• Sealers
• Stain Prevention
• Moisture Control
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LESSONS LEARNED
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FINAL THOUGHTS
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