UMass Design Building A Firsthand Account from Design through Owner Occupancy

Transcription

1 UMass Design Building A Firsthand Account from Design through Owner Occupancy Tom S. Chung, AIA LEED BD+C, Principal, Leers Weinzapfel Associates Peggi L. Clouston, PEng, MASc, PhD, University of Massachusetts Disclaimer: This presentations was developed by a third party and is not funded by WoodWorks or the Softwood Lumber Board

2 National AIA Firm Award Ranked in ARCHITECT Magazine s Top 50 Firms, 2015 & 2016 Over 85 National & Regional Design Awards Over 100 National & International Publications LEERS WEINZAPFEL ASSOCIATES

3 ACADEMIC INFRASTRUCTURE COMMUNITY CIVIC

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7 UMass Design Building A Firsthand Account from Design through Owner Occupancy 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. Tom S. Chung, AIA LEED BD+C, Principal, Leers Weinzapfel Associates Peggi Clouston, PEng, MASc, PhD, University of Massachusetts

8 UMass Design Building A Firsthand Account from Design through Owner Occupancy Course Description Completed in early 2017, the Design Building at the University of Massachusetts Amherst is the first of its kind in the U.S. At four stories and 87,500 sf, this mass timber project features a glued-laminated (glulam) timber column-and-beam frame, mass timber lateral forceresisting system, hybrid cross-laminated timber (CLT)/concrete floor system, and unconventional cantilevered forms. This presentation will highlight two aspects of the project: the design process will be discussed by the principal architect and the construction and occupancy phases will be reviewed by an associate professor who was close to the process and now works in the building. From code approval through occupancy, this session will address the process and collaboration required to see this groundbreaking structure to fruition in a steel-dominated construction industry. Tom S. Chung, AIA LEED BD+C, Principal, Leers Weinzapfel Associates Peggi Clouston, PEng, MASc, PhD, University of Massachusetts

9 UMass Design Building A Firsthand Account from Design through Owner Occupancy Learning Objectives Explore the design team s approach to material and construction selection for a mass timber building in lieu of traditional steel systems. Review the code approvals and procurement steps taken to achieve compliance for and construction of a first-of-its-kind mass timber building. Highlight innovative structural solutions such as composite CLT floor systems, researched at the University and implemented by the design team. Demonstrate the benefits realized by tenants of a mass timber building including aesthetics and occupant comfort. Tom S. Chung, AIA LEED BD+C, Principal, Leers Weinzapfel Associates Peggi Clouston, PEng, MASc, PhD, University of Massachusetts

10 UMass Design Building A Firsthand Account from Design through Owner Occupancy AGENDA/ OUTLINE Introduction Background, Context, & Design Concept Design Process Structure & Architecture Central Commons Assuring the Client: Budget, Procurement & Code Construction Mass Timber compared to Steel Construction Post&Beam Construction, Composite Floors, Shaft Walls, & Bracing Zipper Truss Mid-air Assembly Occupancy Phase and Benefits of Mass Timber User Experience and Intangibles of Wood and Architecture Forestry & Sustainability Benefits Tom S. Chung, AIA LEED BD+C, Principal, Leers Weinzapfel Associates Peggi Clouston, PEng, MASc, PhD, University of Massachusetts

11 Project Background & Design Concept

12 Regional Context

13 Aerial View of Campus

14 Campus Circulation

15 Building Concept Diagram

16 Site Model

17 Program Organization

18 Section Through Commons and Learning Courtyard

19 Cutaway Model

20 Central Commons

21 Learning Courtyard

22 Regional Context

23 View from Campus Core

24 View from Historic Stockbridge Way

25 View from North Approach

26 Design Process

27 Typical Floor Plan

28 Steel Column Grid

29 Timber Column Grid

30 Structural Systems

31 Glue Laminated (Glu-lam) Beams, Columns, and Diagonal Bracing

32 Cross Laminated Timber (CLT) for Floor Panels and Shear Walls

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34 Post and Beam Structural Framework

35 Structural Framework Revit Model

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37 Central Commons and Courtyard Design Structural Challenges: Longest span with heavy loading above Minimize structural depth Wet garden on a wood structure

38 Courtyard Concept Sketch

39 Zipper Truss Final Concept

40 Zipper Truss Model

41 Courtyard Model Views

42 Zipper Truss Model

43 Central Connector Studies

44 Central Connector Studies

45 Grasshopper Parametric Definition

46 Rhino Model Detail

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52 Process: Assuring the Client Project Team and Stakeholders Project Team Client: University of Massachusetts Building Authority User: University of Massachusetts, Amherst Architecture & Design, LARP, Building Construction & Technology Architectural / Structural Design Team: Architect: Leers Weinzapfel Associates Structural Design Engineer: Equilibrium Consulting SER: SGH AHJ: MA State Building Inspector MA Board of Appeals Construction Team: Construction Manager Timber Fabricator and Installer

53 Process: Assuring the Client Bidding and Procurement Key Issues Danger of Over Estimating Contingency by Construction Managers or Cost Estimators due to the Unknown Importance of multiple Bidders Coordination of Fabricator and Installer Team

54 Process: Code Review & Variance Alternative Structural Systems CLT roof/floor panels and shear walls CLT floor panels and glulam beams with composite concrete

55 Process: Code Review & Variance Alternative Structural Systems CLT roof/floor panels and shear walls CLT floor panels and glulam beams with composite concrete

56 Process: Code Review & Variance Alternative Structural Systems CLT roof/floor panels and shear walls CLT floor panels and glulam beams with composite concrete

57 Process: Code Review & Variance Alternative Structural Systems CLT roof/floor panels and shear walls CLT floor panels and glulam beams with composite concrete

58 Process: Code Review & Variance TESTING

59 Process: Code Review & Variance Alternative Structural Systems

60 CONSTRUCTION

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62 How is it Constructed?

63 Very Much like a Steel Building Steel Post & Beam Steel/Concrete Floors Steel Deck Roof Concrete Shafts Steel Braces Glulam Post & Beam CLT/Concrete Floors CLT Roof CLT Shafts Glulam Braces

64 Steel Post and Beam Structural Framework

65 Post and Beam Structural Framework

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67 Glulam Beam to Column Connection

68 Glulam Beam to Column Connection

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70 FAST glulam column installation Photo credit: A. Schreyer

71 Fab lab, wood shop, and BCT lab: framed in one day

72 Steel-Concrete Composite Floor System

73 Steel Concrete Composite Floor System

74 CLT Concrete Composite Floor System

75 CLT Concrete Composite Floor System

76 UMass research on HBV Shear Connector Failure line Load (kn) Steel failure Displacement (mm) Clouston P, Bathon L, Schreyer A Shear and Bending Performance of a Novel Wood-Concrete Composite System. ASCE Journal of Structural Engineering. 131(9), pp Clouston P, Schreyer A Design and Use of Wood-Concrete Composites. ASCE Practice Periodical on Structural Design and Construction, 13(4), pp

77 CLT - Concrete Composite Floor

78 CLT - Concrete Composite Floor

79 CLT - Concrete Composite Floor

80 CLT - Concrete Composite Floor

81 Concrete Shaft Shear Walls

82 CLT Shaft Shear Walls

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84 Photo credit: A. Schreyer

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87 Steel Bracing Lateral Cross Bracing

88 Glulam Bracing Lateral Cross Bracing

89 Lateral Cross Bracing

90 Lateral Cross Bracing

91 Slotted-in plates with tight fitting dowels

92 Zipper truss mid-air assembly

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94 Photo credit: A. Schreyer

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98 OCCUPANCY PHASE & BENEFITS

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113 Local Species Cross Laminated Timber Massachusetts Eastern Hemlock Principal Investigator: P.L. Clouston Co-Investigators: A.C. Schreyer & S. R. Arwade What are we doing? Proof-of-concept computer modeling and testing Why are we doing it? To create markets for local wood species, green jobs and to preserve local forest health

114 Timber Structure Revit Model Carbon Summary

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116 Read all about it bout-us/the-design-buildingat-umass-amherst/designbuilding-press-review/

117 UMass Design Building A Firsthand Account from Design through Owner Occupancy THANK YOU! Tom S. Chung, AIA LEED BD+C, Principal, Leers Weinzapfel Associates Peggi L. Clouston, PEng, MASc, PhD, University of Massachusetts

118 QUESTIONS? This concludes The American Institute of Architects Continuing Education Systems Course Tom S. Chung, AIA LEED BD+C, Principal, Leers Weinzapfel Associates Peggi L. Clouston, PEng, MASc, PhD, University of Massachusetts