Fasteners for Mass TimberMax Closen
MyTiCon Timber Connectors
January 9, 2019 6
So!
Understanding Mass Timber
Is also understanding
Fasteners for Mass Timber
January 9, 2019 7
Fasteners for Mass Timber today
• Self Tapping Wood Screws
• Beam Hangers
• Holdowns
• Reinforcements
• Panel Material Handling
January 9, 2019 8
Capacity High or low
Stiffness Stiff or soft
Failure Brittle or ductile
Fastener - Performance
January 9, 2019 9
Fasteners for Mass Timber
Self Tapping Screws
January 9, 2019 15
2200
2400
2600
2800
3000
3200
3400
3600
140 160 180 200 220 240 260
Late
ral R
esis
tance [
N]
Screw Length [mm]
φ=0.8 φ=0.6
Design - Performance
January 9, 2019 30
Opportunity - Performance
January 9, 2019 31
Opportunity - Performance
January 9, 2019 32
Opportunity - Performance
January 9, 2019 33
Opportunity - Performance
Reverse cyclic load
Quasi static load
January 9, 2019 35
Connection – Performance - Steel
January 9, 2019 43
Summary – Performance - Steel
Gutknecht 2017
January 9, 2019 44
Fasteners for Mass Timber
Beam Hangers
January 9, 2019 46
Beam Hanger - Performance
• Pre Engineered and installed
• Failure mechanism
• Detailing requirements
• Fire resistance
• Adaptable
January 9, 2019 47
Pre manufacture - Performance
January 9, 2019 48
Pre manufacture - Performance
January 9, 2019 49
Pre manufacture - Performance
January 9, 2019 71
Fasteners for Mass Timber
Holdowns
January 9, 2019 80
Fasteners for Mass Timber
Reinforcements
January 9, 2019 81
Think Concrete - Performance
January 9, 2019 90
Summary - Performance
Available technology not utilized yet
January 9, 2019 91
Fasteners for Mass Timber
Mass Timber Handling
January 9, 2019 92
Current state on a call:
Contractor: I am lifting wood things?
Me: What wood things?
Contractor: 20’ wide and 30’ tall formwork
Me: Wood formwork, framed?
Contractor: No, this wood is in panels
Me: Ah, CLT?
Contractor: Yes, those CLT things
Me: What is your estimated weight?
Contractor: Don’t know, I heard 12,000lbs
Me: Is 12,000lbs your gross weight?, You need to factor that up with a dynamic
load
Contractor yelling: Hey Mike did you hear that, he's trying to tell me some
scientific
January 9, 2019 112
So!
Understanding Mass Timber
Is also understanding
Fasteners for Mass Timber
January 9, 2019 113
What have we looked at today?
January 9, 2019 116
Beam Hanger - Performance
January 9, 2019 117
Beam Hanger - Performance
January 9, 2019 120
Material Handling - Performance
Fasteners for Mass TimberMax Closen
MyTiCon Timber Connectors
Thank you!