Bay team’s Output Engineer Yang, Yao-Hung Construction Manager David Walthall Architect Cindy Chan.

Bay team’s Output

Engineer

Yang, Yao-Hung

Construction Manager

David Walthall

Architect

Cindy Chan

San Francisco

Seismic Concern Liquefaction and Landslides

Climate Data San Francisco Oceans, California USALocated at 37.73 N 122.50 W, 100 feet above sea level

• Average Temperature 55.6 °F• Annual Rainfall 1.9 inches• Heating Degree <65°F / Year 1921

• Cooling Degree 23• Reference Site

Urban Texture

Campus

Transaction of Urban and NatureCampus Grid vs. City Grid

N

San Francisco State University

Student Health Center

Burk Hall

Student Service Complex

Cesar Chavez Student Center

J.P. Leonard Library

N

Redesign- Sundial ProjectOriginal Concept• The Sundial will be a marker of time and

movement of the activities that occur inside the building

• Hallways acting like a Telescope (provide view to SF), allowing outsiders to have a clear view of the activities occurring inside.

Goal• Add Cafeteria and Gym

• Using the unique cone structure to centralize main social activity

• Provide more efficient circulation and

encourage interaction.

Floor Plan

Gym 2 Floor height open space 660 SF- 26’ 400 SF - 16’

RR

Columns and Glass Panels alone the Gym

Chair Office Faculty Office Secretaries

Cafeteria

E N

B

1st

2nd

3rd

Attempt of Material Choice

A: Using Tensile structure for the cone structure

E: Concern about safety Issues: Wind velocity

Owner : Low R-Value for the tensile structure

Use double glazing for the

structure

A: short life cycle of the structural material

Redesign Structure AltsSide View

Steel SMRF

Concrete Concrete MRSFMRSF

Redesign

Concrete selected

Alt 1 - The Spine Project The fundamentals of Engineering Profession…

Research

• Recording

• Analyzing

• Storing

Information Knowledge

Centralize

Display

Encourage Social Interaction

Private

Faculty

StudentPublic

E`

Spine Floor Plan

1st

2nd

3rd

Spine Material Choice

Spine Structure Alternatives

3D 3D Model Model

Side View

Core + Brace, Steel SMRF

Brace, Concrete SMRF

Shear walls with Concrete SMRF

Spine

Spine with glass cladding

Brace with Energy dissipation devices

Spine Alt 1Brace & Damping

The Curve Wall Project

Entrance

Entrance

Curve Wall

Cantilever Structure

Circulation/Service

Strip

Concept

Plan Evolution

2nd

Classroom/ Lab Receive defuse North light

1st

Basement

Auditorium Public Space alone the Curve Wall

Lobby 2 fl height open space

Student Office Close to student body

Ramp Handicap Access.

Curve Wall Sense of continuity

Cantilever Bridge to the nature

Material Choice

Curve Alternatives

Core with Steel MRF and lightweight concrete slab

and steel deck

Shear walls, Core with Postensioned Gravit

y Floor System

Auditorium & Cantilever

Auditorium

Cantilever Part

Shear connection

Foundation: Footing

Spread Footing (Shallow Foundation)Used

Dimension: 3.6 x 3.6 Square Footing

Retaining Wall

– Water table - 16-20’

– Soil Friction angle - 20

– Cohesion - 250 lb/Ft2

Construction Constraints and Considerations

• Site Location– Close to ocean

– San Francisco – seismic activity

– Metropolitan area – accessibility and construct ability

Location of Site

Major Highway

AVOID!!

TrailerRadius of Crane

Material StorageFlow of Traffic

Alternative Site Layouts

Flow of Traffic

Trailer

Radius of Crane

Material Storage

Funds Available for Project

Conservative values+

Inflation +

Cyclical Costs+

Improved Methods

$500,000 =

Equipment Selection

Mobility Maneuverability

CostAvailability

120 TonAll Terrain Crane

Grove GMK-5120B

For use with heavy columns And beams as wells as Decking

Reach of 72 feet to 115 feet. Heights from 52 feet to 72 feet. Lift capacities atmaximum reach of 1320 pounds to 2200

pounds. Maximum lift of up to 8800 pounds. For use with VRML

Price Breakdown

+ ’s - ’s

- Strong sense of directionality

- Clear frame and core defined

- Repetition, Symmetry

- Scarify large amount of space

- Complex interactions between systems

- Too Expensive

- Simple Form and Clear Circulation path

- Various informal social space

- Two Uniformed structure system

- Challenging Design

- Exceeding height limit

- The form is too Rigid

- Eccentric moment issue

- Amount of Glass

- Strong Form and Gesture

- Provide multi level special experiences

- Simple gravity system

- Reassembly of materials\

- Lack of informal social space

- Non-Uninformed Long beams

- Complicated concrete

Comments

Team Dynamics

Lessons Learned / ImprovementLessons

• Architect – Communication through 2D and 3D graphic program, Patient and Trust.

• Engineer – 3D coordination,Communication,

• CM – Complete Documentation exchange between discipline

Improvement

• Precisely define the size of components

• 3 D software modeling

• Always Keep other members inform of ideas, progress, and changes through website

• Time management and Efficient group meeting