2001 Winter Presentation

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2001 Winter Presentation
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Site Location
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Site View
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Site History
1923
Boston Improved Sewage
1972
1968
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Site Constraints

• Peninsula, surrounded by water
• Area of in-filled land
• Winter snow

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Engineering Constraints

• Soil Properties
• Compactable Soil
• 4000 psf bearing capacity
• Capacity, silt/clay and sand mixture
• 20 water table
• Loading
• Live Load 50 psf
• Dead Load 70 psf
• Wind Load 35 psf
• Roof Load 28 psf

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Budget Information

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Architects Vision
air
With a clear understanding of the historical
influences of site, the land, the harbor, the
history of Boston
light
water
sewage
A Machine Of Flow
movement
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Architectural Design 1 (Redesign)

• Keep the integrity of the DOME
• Allow open center to remain
• Evaluate programmatic functionality
• Relocate sloped floor rooms to basement level for
  ease of constructability of slabs

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Architectural Design 1 (Redesign)
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Engineering Design 1 Steel (Redesign)

• Composite steel design
• Regular column grid
• Easy installation
• Steel moment frame

Typical Beam W14X26 c1 Moment Frame W16X36
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Design 1 Steel Estimate (Redesign)

• Total 3,145,000

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Engineering Design 1 Precast (Redesign)

• 12 masonry wall
• 24 deep precast concrete girders

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Design 1 Precast Estimate (Redesign)

• Total 3,231,000

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Design 1 Schedules

• Finish Dates
• Steel - 09/28/16, Precast - 10/05/16
• Durations
• Steel 8 mo 4 wks, Precast 9 mo

Precast
Steel
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Architectural Design 2

• Concepts
• Flow like the waves of the bay
• Structure like the hull of a boat
• Gesture towards the historic influence of the
  site
• Open walls towards the oak trees
• Individuality between faculty and students

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Architectural Design 2
Auditorium Classrooms, seminar rooms,
labs Student offices Faculty offices, facilities,
administration
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Engineering Design 2 Steel

• Gravity System
• Composite steel design
• No truss for auditorium

Typical Beam W14X30 Typ Girder W24X55 Typ Col
W12X40 Auditorium beam w24X76
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Engineering Design 2 Steel

• Steel bracing
• Tube 3X3X1/4

• Foundation layout
• Strip spread footings

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Design 2 Steel Estimate

• Total 2,722,000

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Engineering Design 2 Precast

• Concrete gravity system
• Load bearing wall, 2-way slab
• 48 post-tensioned girders

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Engineering Design 2 Precast

• 12 masonry walls
• Load path

• Foundation layout
• 3 wide strip footing

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Design 2 Precast Estimate

• Total 2,800,000

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Design 2 Schedules

• Finish Dates
• Steel - 09/14/16, Precast - 09/21/16
• Duration
• Steel 8 mo 2 wks, Precast 8 mo 3 wks

Precast
Steel
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Architectural Design 3

• Concepts
• Box in a box
• Simple, double structure

• Advantageous use of sloped classroom and
  auditorium floors

• Flow of light to below grade level

• Exterior wood structure to gesture towards trees

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Architectural Design 3
Auditorium Classrooms, seminar rooms,
labs Student offices Faculty offices, facilities,
administration
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Architectural Design 3
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Engineering Design 3 Steel
Inside Frame Plan
Gravity System
Steel Bracing Tube 3x3x1/4
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Engineering Design 3 Steel
Outside Frame Plan
Flat Roof
Steel Knee Brace Frame
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Design 3 Steel Estimate

• Total 3,083,000

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Engineering Design 3 Wood
Inside Frame Plan
Wood Wall Lateral System
Gravity System
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Engineering Design 3 Wood
Outside Frame Plan
Pre-fabricated wood truss with knee brace
Prefab wood truss 2"X6" Column 12"DIA Knee brace
2"X6" Joist 2"X4" Steel Brace 12"X2"
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Engineering Design 3 Wood
Outside Structure Load Path
Gravity Load
Lateral Load
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Engineering Typical Connection
Wood With Steel Plate Bolts
Steel Bracing
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Design 3 Wood Estimate

• Total 2,978,000

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Design 3 Schedules

• Finish Dates
• Steel - 08/24/16, Wood - 09/07/16
• Durations
• Steel 7 mo 3 wks, Wood 8 mo 1 wk

Wood
Steel
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Equipment Selection
Truck Crane
Mini Excavator
Skid Steer Loader
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Budget Comparison
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Design Evaluations
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Decision Matrix
Explanation of design rankings
1Best6Worst
Lowest point total wins
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Design Choice

• Design 3
• Best combination of strengths vs. weaknesses were
  3W 3S from matrix
• Wood/Steel Hybrid
• Combine the attractiveness/interest of 3W with
  the cost and schedule benefits of 3S
• Keep wood exterior structure of 3W, but
  incorporate the steel interior structure of 3S

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Team Dynamics/Interaction
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Team Dynamics/Interaction
The most challenging and the most successful
part of this whole process is the perpetual
learning of our own and each others discipline
and how we must collaborate in order to succeed.
The structural system is not the only aspect of
the building. We need to think about the others'
intentions and constraints. Compromising between
different intentions is very important in
developing a successful project.
The greatest thing we will take away from this
class is learning how to successfully work in a
challenging situation with diverse people on a
project with little contact.
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Lessons Learned

• Cross-Discipline Knowledge
• Vocabulary
• Interests/Concerns
• Teamwork
• Tolerance
• Dependence/Collaboration
• Organization/Work Habits
• Technology
• New Applications

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2001 Winter Presentation
Questions?