Tall Timber Americas Challenges & Solutions. Dmitri Jajich, Director, Skidmore, Owings & Merrill LLP

Transcription

1 Tall Timber Americas Challenges & Solutions Dmitri Jajich, Director, Skidmore, Owings & Merrill LLP

2 SOM Research and Testing Survey of Recent North American Projects Future

3 Timber Tower Research Project The goal of the Timber Tower Research Project was to develop a structural system for tall buildings that uses mass timber as the main structural material.. that could compete with concrete and steel while reducing the carbon footprint.

4 Available Technologies

5 Available Technologies Mass Timber

6 Mass Timber Fire Resistance

7 Proposed Composite Timber System Competitive Buildings Marketable Resilient Serviceable Economical Sustainable

8 Carbon Footprint Comparison Sustainably Managed Forests Renewable Resource Less Global Warming Potential Improves Air & Water Quality Prevents Erosion Improves Soil Supports Biodiversity

9 Research Application

10 Big Picture Sustainability Columns: Material: 5 10% Testing: Some Use: Timber Building Only Floor Framing: Material: 65 75% Testing: Some Use: Timber or Composite Building Shear Walls: Material: 15 25% Testing: Extensive Use: Timber Building Only

11 Composite Timber Floors

12 Composite Timber Floors

13 Form and Function

14 Verification Testing

15 Test Section Location

16 Test Section Location

17 Full Scale Test

18 Full Scale Test at Failure Point

19 Full Scale Test at Failure Point

20 Connector Tests

21 Connector Test Results

22 Full Scale Test

23 Full Scale Test Results

24 Full Scale Test Results

25 AISC Steel + Timber Study

26 AISC Steel + Timber Study

27 Benchmark Building Structure

28 Steel + Timber Solution Framing Plan

29 System Rendering

30 System Details

31 Timber Details

32 Hybrid Steel and Timber Systems All Systems Prefabricated Construction Lightweight Typical Approach Timber floors for acoustics & fire Steel seismic resisting system Steel or timber columns

33 SOM Research and Testing Survey of Recent North American Projects Future

34 Brock Commons Tallwood House Location: Description: Completion Date: 2016 Height: Architect: Structural Engineer: Structural Systems: Slab System: Reference: University of British Columbia, Student Housing 18 Stories / 45m Acton Ostray Fast + Epp Concrete Core (lateral system) CLT Decks + Glulam columns non composite, non structural topping slab new heights 2/

35

36 University of British Columbia Life Sciences Location: Description: Completion Date: 2012 Height: Architect: Structural Engineer: Structural Systems: Slab System: Reference: University of British Columbia Student Housing 4 Stories / 16m Perkins + Will Equilibrium Glulam Bracing with ductile screw connections (lateral system) LVL Decks + Glulam beams & columns composite, structural topping slab sciences building esb.html

37

38

39 Bulllitt Center, Seattle Washington Location: Description: Completion Date: 2012 Height: Architect: Structural Engineer: Structural Systems: Slab System: Reference: Seattle Office Building for Bullitt Foundation 6 Stories / 24m Miller Hull DCI Steel Braced Frames (lateral system) NLT Decks with Plywood + Glulam Beams & Columns non composite, non structural topping slab center/

40

41 OSU College of Forestry Location: Description: Completion Date: 2019 Height: Architect: Structural Engineer: Structural Systems: Slab System: Corvallis, Oregon Classrooms, office, laboratory 3 Stories / 12m Michael Green Architects Structurcraft CLT Rocking Walls(lateral system) CLT Decks, + Glulam Beams & Columns composite, structural topping slab

42

43 OSU College of Forestry Location: Description: Completion Date: 2020 Height: Architect: Structural Engineer: Structural Systems: Slab System: Reference: Framework, Portland Office and affordable Housing, Winner of US Tall Wood Competition 12 Stories / 40m Lever Architects KPFF CLT Rocking Walls(lateral system) CLT Decks, + Glulam Beams & Columns non composite, non structural topping slab

44

45 Longbeach Library Location: Description: Completion Date: 2018 Height: Architect: Structural Engineer: Structural Systems: Slab System: Reference: SOM Longbeach, California Library built over existing parking minimal weight timber allowed reuse of existing foundations 2 Stories / 12m SOM SOM Steel Braced Frames (lateral system) Plywood Decks, + Glulam Beams & Steel Columns composite, structural topping slab (seismic diaphragm)

46

47

48 Long Beach Library

49 T3, Minneapolis Location: Description: Completion Date: 2015 Height: Architect: Structural Engineer: Structural Systems: Slab System: Minneapolis Minnesota Office Building built to limit of IBC Code 7 Stories, 24m Michael Green Architects Structurcraft / MKA Concrete Cores (lateral system) NLT Decks w/ Plywood, Glulam Beams & Columns non composite, non structural topping slab

50

51

52 Olver Design Building Location: Description: Completion Date: 2017 Height: Architect: Structural Engineer: Structural Systems: Slab System: Amherst, Massachusets Office + Classroom 4 Stories, 24m Leers Weinzapfel Equilibrium Glulam Bracing w/ Ductile Screws (lateral system) CLT Decks, Glulam Beams & Columns composite, structural topping slab

53

54

55 s i u B l l a t T a n t i o b il a c un an H o C rb du an g n i ld

56 SOM Research and Testing Survey of Recent North American Projects Future

57 High Rise Buildings Looking Forward Replacing metal deck w/ 3 ply CLT on this project would equal 200,000 cubic feet of CLT. Steel framing with timber decking and framing is an effective way to increase timber usage in the market.

58 Differential Shortening

59 Fire Load Limits Proposed ICC Code Changes