Timber-Concrete Composites - Forest Products Laboratory...Timber-Concrete Composites Mass Timber...

Timber-Concrete Composites Mass Timber Research Workshop November 3RD, 2015 Forest Products Laboratory

Presenter: Benton Johnson, PE SE Skidmore, Owings & Merrill LLP

Timber-Concrete Composites November 3rd, 2015

© 2015 Skidmore, Owings & Merrill LLP

Composite Elements

STEEL CONCRETE

TIMBER



Composite Elements

Composite Metal Deck



Composite Elements

Composite Steel Beams Composite Steel Trusses



Composite Elements

Concrete Encased Steel Column Concrete Filled Steel Tube



Composite Buildings



Composite Buildings

Photo © McShane Fleming Studios

Photo © Ezra Stoller | Esto

CTBUH Tallest Steel Building Rankings

***Will is Tower consists of 75,000 tons of steel and 100,000 tons of concrete



Why Composite?

Strength Stiffness Mass Acoustics Fire



Why Composite?

Strength Stiffness Mass Acoustics Fire

COST



Learning from Other Industries



Timber vs. Concrete

Select Structural SPF • Density = 30pcf +/- • Combustible • Shrink & swell • Prefabricated • Regular load paths

5,000 psi Concrete • Density = 145pcf +/- • Non-combustible • Shrink • Cast-in-place • Complex load paths

C=2,600psi

T=1,300psi

C = 800psi

200psi

T = 0psi

= Side Face

C = 2,500psi – 3,400psi

140-710psi

T = 500psi – 2,150 psi

= Cut Face

= Cut Face



SOM Research – Initial Project

COST • Strength • Stiffness • Mass • Acoustics • Fire Resistance



SOM Research – Gravity Framing Report




Fire Resistance of Composite Timber Floors



Composite Timber Floors

KLH System

CREE System

HSK / HBV Mesh Plates



Composite Timber Floors



Model Composite Timber Building

Model Building Diagram





Concrete Residential

Tower

Parking

Foundations

R/C Shear Wall Core

Concrete Jointed Timber Frame

System for Tower

R/C Shear Wall System

Concrete Structure at Parking & Retail

Foundations




Concrete Residential

Tower

Parking

Foundations

R/C Shear Wall Core

Concrete Jointed Timber Frame

System for Tower

R/C Shear Wall System

Concrete Structure at Parking & Retail

Foundations

Less Concrete & Rebar

Foundation Savings

Faster Schedule

Higher Quality Finishes

Energy Savings



Strategic Plan for ICC 2021

ICC Recognition of Composite Timber Floors / Structures • Structural testing • Acoustic testing • Fire testing



SOM Research – Testing at Oregon State Univ.



Strategic Plan for ICC 2021

ICC Recognition of Composite Timber Floors / Structures • Structural testing • Acoustic testing • Fire testing



Strategic Plan beyond ICC 2021

ICC Recognition of Composite Timber Floors / Structures • Structural testing • Acoustic testing • Fire testing • Precedents



Conclusions

STEEL CONCRETE

TIMBER

Timber-Concrete Composites Mass Timber Research Workshop November 3RD, 2015 Forest Products Laboratory

Thank You

Contact: [email protected]

Timber-Concrete Composites - Forest Products Laboratory...Timber-Concrete Composites Mass Timber...

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