PACIFIC TEAM SPRING QUARTER PRESENTATION

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PACIFIC TEAM SPRING QUARTER PRESENTATION
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TEAM MEMBERS
TONIE GARZA ARCHITECT
PETER DEMIAN STRUCTURAL ENGINEER
JOHN ENGSTROM CONSTRUCTION MANAGER
Owners
ASAKO AKAZAWA APPRENTICE
Robert Alvarado Industry Owner
Mr. Kozakai Japan
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Outline of Presentation
Project Introduction Winter Quarter
Alternatives A-E-C Iterations and
Resolutions Architectural Review Structural
Review Construction Review Collaboration and
Group Dynamics
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A E C
Team Dynamics

• Lessons from Winter Quarter
• Be more honest in our interactions
• Meet more frequently
• Increase the teams interaction with the owner

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Team Dynamics

• Spring Quarter Improvements?
• Interaction was more active
• The group met more frequently (at least twice per
  week)
• Interactions with the owner were not increased
  significantly
• The group developed a better understanding of the
  disciplines
• Our individual project decisions were more
  disciplined based

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Project Information
The Engineering School of Pacific
University Location Oregon Coast Year
2010 Square Footage 30,000 sf. Budget
5,500,000
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A E C
Site Layout
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A E C
Design Alternatives
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A E C
Design Alternatives

• Good forms.
• Slightly predictable.
• No clear architectural intent.

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DESIGN ALTERNATIVES

• Simple Frame.
• Potential problems with columns.

E
C

• 4.8M

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A E C
Design Alternatives
Large beam span in auditorium may pose some
significant challenges. Standard grid allows for
little variation in building skin.
A
C
Concurrent construction 4.8M
E
Simple layout due to grid format
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DESIGN ALTERNATIES
A E C
Design Alternatives
A

• Initial reaction to conceptual beginning.

Challenging and intriguing structural system.
Exceeds structural budget. 5.9M
E
C
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A E C
Design Alternatives
Remains close to conceptual ideas while at the
same time addressing programmatic requirements
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Best combination of structural and architectural
requirements.
Presents challenges to all disciplines while
staying within the budget. 5.5M
E
C
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A E C
Proposal Recommendation
PROPOSAL 4 - The Crystal Palace
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The Design
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1st Floor Plan Layout
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2nd Floor Plan Layout
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3rd Floor Plan Layout
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Programmatic Changes
Iteration 1
Iteration 2
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Circulation vs. Used Space
circulation
used
Iteration 1
Iteration 2
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Area Designated by Use
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Level 3
Level 2
Level 1
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Atrium Lighting

Evening light study
Morning light study
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3D Renderings
Building main entry -Evening and afternoon light
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3D Renderings
Northeast façade Overhangs
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Future Design Proposal
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A E C

• Concrete - to reflect architectural bunker
  concept
• Post-tensioned flat slab with drop panels
• Shear walls - seismic Zone 3, lateral strength
  for earthquake loads
• large spans span/depth38
• gravity loads dead 100 psf
• live 50 psf (office)
• 100 psf (computer lab)
• earthquake load UBC 94 Zone 3 Design Spectrum

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• Put picture of structure here

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Columns / Foundations
A E C
PROPOSAL 3 - The Bunker

• Interior columns
• circular, 20 diameter, 3 reinforcement, carries
  axial load, very small moments
• drop panels 3 diameter by 8 deep
• Exterior columns (corners and sides)
• 24 square, 6-8 reinforcement
• drop panels 4 square by 8 deep

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Slab
A E C

• 12 in thick PT slab
• PT details here
• shear moment

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Column to Slab Connection
A E C
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Shear Walls
A E C

• 4 exterior walls 20 thick by 12 long
• thick than necessary to compliment architectural
  concept
• shear wall combined with adjacent column.
  Column acts as a column for out-of-plane
  bending, and as a shear wall boundary element for
  in-plane bending.
• Connection subtleties

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Shear Wall to Slab Connection
A E C
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Old Atrium
A E C
Moment resisting Frames
Complex joint between two different slab systems
Roof/ slab interaction
Struts for lateral support
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Atrium New
A E C
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Seismic Analysis
A E C
Floor Displacements and Drifts

• UBC 94 Design Spectra not site-specific
• Period of structure 0.3 seconds

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Slab Deflections, Vibrations - Potential Problem?
A E C

• Large spans - large deflections
• UBC limit l/480 ? 1in
• Max displacement from approximate computer model
  2 in
• Vibrations more difficult to analyze. Further
  investigation required.

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Construction Summary
A E C
Construction

• Concrete CIP Structure
• Rock Excavation
• Slab Overhangs and Pre-cast
• Atrium Glass Curtain Wall

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A E C
Site Layout
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A E C
Estimate
Cost 4.9M (161/sf)
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A E C
Excavation Costs

• Discovery of Rock on Site significantly increased
  the unit cost of excavation.
• This was mitigated by
• Reducing floor-to-floor heights and eliminating a
  submerged 1st level.
• This reduced the amount of excavation by over
  half (still need auditorium and large classrooms
• Ancillary effect was to reduce the size of
  footings

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A E C
Slab Costs /sf
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A E C
Schedule
Completion September 12, 2012
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A E C
Milestones
Exterior Closure May 24, 2012
Superstructure April 12, 2012 (5.5 Months)
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A E C
MEP Systems

• Mild Climate
• Exposed system important for architecture
• Standard Design
• Air Handler, Chiller, Boiler configuration

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A E C
HVAC Distribution
A-C Iteration MEP Rooms centrally located
E-C Iteration Holes in the Slab Next to Elevator
Shaft
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AEC Interaction
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E/ C
Atrium
AEC Interaction
E/ C
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Overhangs
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E
Shear Walls
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AEC Interaction
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E/ C
Atrium
AEC Interaction
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AEC Interaction
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E/ C
Overhangs
AEC Interaction
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A
E
Shear Walls
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Value of Course

• Architect
• Cross-Disciplinary
• Construction Manager focus on work efficiency
• Engineer assumption about architectural
  understanding of structure
• Take Home Lesson
• The more sketching I do, the more questions E
  CM will want answered.

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Value of Course

• Engineer
• Cross-Disciplinary
• Understanding the importance of structural
  concept
• Appreciate the scheduling/financial aspects of CM
• Take Home Lesson
• Every structural decision will effect other
  disciplines

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Value of Course

• Construction Manager
• Cross-Disciplinary
• Conceptual architecture is difficult to grasp.
• 3D Model is essential to facilitate communication
• Take Home Lesson
• Design is never complete, it is simply abandoned.
• Pay attention to the gap between conceptual phase
  and detail phase

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The End