Jiannan Wang (Tsinghua, China) Guoliang Li (Tsinghua, China) Jianhua Feng (Tsinghua, China)
Pacific Team Winter Quarter Presentation AMaria Zapata, Georgia Tech, Atlanta EAmir Kavousian,...
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Transcript of Pacific Team Winter Quarter Presentation AMaria Zapata, Georgia Tech, Atlanta EAmir Kavousian,...
Pacific TeamWinter Quarter Presentation
A Maria Zapata, Georgia Tech, AtlantaE Amir Kavousian, Stanford U, Stanford
Xin.Zheng Lu, Tsinghua U, Beijing C Karthik Jayachandran, Stanford U, Stanford
Anton Sjöberg, KTH, Stockholm
OwnersHans Verhey & Nick Arenson
Pacific Team AEC Project 2008
SiteSF State University
Pacific Team AEC Project 2008
Wind
Sunlight
.
Sunrise
- Mild temperature whole year round, fog
100 ft
N
VIEWS
Sunset
Site Potential
Pacific Team AEC Project 2008
• Energy Saving• Daylight/Ventilation• Thermal comfort• Views
Weather Data
Pacific Team AEC Project 2008
Driving Ideas San Francisco
Pacific Team AEC Project 2008
• Enlightment > discovery• Science and technology• Learning environments
Pacific TeamProjects Features
Pacific Team AEC Project 2008
• Footprint• Access• Key spaces: Auditorium, atrium
• Roof• Shape• Ventilation/daylight
Project 1: Wave
Pacific Team AEC Project 2008
• Inspired site unique features
WaveLevel 1 -3ft
Elevator/StairsCirculationRestroomClassroomsLounge areaAuditorium
10ft
76
38 32
40
40
76
WaveLevel 2 +8ft
10ft
Elevator/StairsCirculationRestroomClassroomsAdministrationAuditoriumStudent Offices
76
38
76
22
15
WaveLevel 3 +19ft
10ft
Elevator/StairsCirculationRestroomLounge AreaFaculty AreaLarge classrooms
76
50
58
38
WaveCross Section 1
Pacific Team AEC Project 2008
WaveCross Section 2
Pacific Team AEC Project 2008
WaveCross Section 3
Pacific Team AEC Project 2008
WaveAtrium Structure
Pacific Team AEC Project 2008
Wave
Pacific Team AEC Project 2008
Wave
Pacific Team AEC Project 2008
Wave
Pacific Team AEC Project 2008
Project 2: Hi-Tech
Pacific Team AEC Project 2008
• Technology/innovation • Light• Simple shape
Hi-TechLevel 1 -3ft
•Elevator/Stairs•Circulation•Restroom•Stud Sp/Classroom•Mech. Room•Student Offices•Auditorium
10ft
40
100
30
30
Hi-TechLevel 2 +8ft
10ft
•Elevator/Stairs•Circulation•Restroom•Classroom•Faculty Offices•Student Offices•Lounge Area
45
100
30
30
384638
Hi-TechLevel 3 19ft
•Elevator/Stairs•Circulation•Restroom•Classroom•Faculty Offices•Student Offices•Administration
10ft
45
100
30
30
38
2030 30
Hi-TechCross Section 1
Pacific Team AEC Project 2008
11
Hi-TechCross Section 2
Pacific Team AEC Project 2008
Hi-Tech
Pacific Team AEC Project 2008
Hi-Tech
Pacific Team AEC Project 2008
LoadingLive Loads
Pacific Team AEC Project 2008
Item Magnitude Unit
Roof (green roof) 80 Psf
Roof (non-green roof) 50 Psf
Class Rooms 40 Psf
Auditorium, Terrace 100 Psf
Office 60 Psf
Roof (flat) 20 Psf
Storage 100 Psf
Corridors 80 Psf
Lobby, Atrium 60 Psf
Loading
Pacific Team AEC Project 2008
Earthquake
•<5km from San Andreas fault
•Seismic Zone: Z=4
•Occupancy Category: 4
•Importance Factor: I=1
•Seismic Source Type: A
•ETABS Spectrum function for UBC 97
Soil
•Soil Bearing Capacity: 3500 psf
•Soil Type: Sd
•Soft Soil Profile
•Liquefaction: YES
Wind
•70 mph wind speed
•Exposure: B
•Interstory Drift: 1” (UBC)
Wave - Steel
Pacific Team AEC Project 2008
Wave - SteelStructural System & Load Path
Pacific Team AEC Project 2008
Composite Floor (3” Steel Deck, 3” Concrete Cover)
EBF in both direction (HSS8x8x1/8)
Cantilever beams (W24x146)
Strip Footing
Columns (W14x162)
Shear Connections
Wave - SteelBraces & Sloped Floors
Pacific Team AEC Project 2008
Sloped Floors
EBF Bays
Rationale for choosing EBF over MRF:1- Lower costs2- Better lateral resisting performance
High possibility of torsion Put more braces in exterior bays.
Wave -SteelColumns First Floor
Pacific Team AEC Project 2008
22’ 18’ 22’4” 15’8” 16’ 21’8”
20’1
1”10
’6’8” 15
’10”
22’1
0”12 ’
25’
Wave - SteelColumns Second Floor
Pacific Team AEC Project 2008
22’ 18’ 22’4” 15’8” 16’ 21’8”
20’1
1”10
’15
’10”
22’1
0”
12’
25’
Wave - SteelColumns Third Floor
Pacific Team AEC Project 2008
22’ 18’ 22’4” 15’8” 16’ 21’8”
20’1
1”10
’15
’10”
22’1
0”12
’25
’
Wave - Concrete
Pacific Team AEC Project 2008
Wave - ConcreteStructural System
Pacific Team AEC Project 2008
Concrete Slab Floor (5” thick)
Shear Walls in both Directions (1’ thick)
Sloped Floors
Sloped Beams
Concrete Columns: 20”x20”
Concrete Beams: 15”x24”
Wave - ConcreteLoad Path
Pacific Team AEC Project 2008
Strip Footing
Two-way concrete slab
Columns
Rationale for choosing shear walls in both directions: 1- High performance2- Savings in the overall amount of concrete due to reduced sizes of other elements (beams and columns)
Wave - ConcreteShear Walls & Columns
Pacific Team AEC Project 2008
20’ 16’ 22’ 16’ 16’ 22’21
’10
’6”
16’
23’
12’
25’
Wave - ConcreteFirst Floor
Pacific Team AEC Project 2008
20’ 16’ 22’ 16’ 16’ 22’
21’
10’6
”16
’23
’12
’25
’
Wave ConcreteSecond Floor
Pacific Team AEC Project 2008
20’ 16’ 22’ 16’ 16’ 22’
21’
10’6
”16
’23
’12
’25
’
Wave ConcreteThird Floor
Pacific Team AEC Project 2008
20’ 16’ 22’ 16’ 16’ 22’
21’
10’6
”16
’23
’12
’25
’
Hi-Tech - SteelLoad Path
Pacific Team AEC Project 2008
3” steel deck; 3” concrete cover
Beams: W24x146Columns: W14x131
Shear Connections
Hi-Tech - SteelFirst Floor
Pacific Team AEC Project 2008
Hi-Tech - SteelSecond Floor
Pacific Team AEC Project 2008
Hi-Tech - SteelThird Floor
Pacific Team AEC Project 2008
Columns in cantilever area sit on beams underneath design special beams
Hi-Tech - Concrete
Pacific Team AEC Project 2008
Hi-Tech - ConcreteStructural System & Load Path
Pacific Team AEC Project 2008Pacific Team AEC Project 2008
Concrete Floor Slab (5” thick)
Concrete Shear Walls in both directions (1’ thick)
Strip Footing
Concrete Columns: 20”x20” RC Sections
Concrete Beams: 15”x24” RC Sections
Hi-Tech - ConcreteColumns & Shear Walls 1st fl.
Pacific Team AEC Project 2008
18’6” 19’ 22’5” 40’
40’
13’8
”
16’4
”
30’
Prestressed Beams (in all stories)
Some beams failed when designed with mild steel; so we decided to prestress those beams.
Hi-Tech - ConcreteColumns & Shear Walls 2nd fl
Pacific Team AEC Project 2008
Hi-Tech - ConcreteColumns & Shear Walls 3rd fl
Pacific Team AEC Project 2008
Foundation Beams
Pacific Team AEC Project 2008
We chose strip footing for all options to decrease concrete usage.(low risk of liquefaction, relatively good soil, relatively low axial forces in columns)
(Dimensions in mm)
MEPTechnology Options
Pacific Team AEC Project 2008
chilled beam
ceiling fan displacement
radiant ceiling
MEPDesign Options
Pacific Team AEC Project 2008
steel
concrete
concrete
steel
LEED Points ChecklistTargeted Credits
Pacific Team AEC Project 2008
LEED for New Construction v2.2
35 Points
LEED Silver
LaborLocal Conditions
Pacific Team AEC Project 2008
• Union Job
• 5 day work weeks
• 8 hr shifts
• 6th day if necessarry
• Holidays – double
• Labor rates- RS Means
Reuse – 2015Strategies
Pacific Team AEC Project 2008
• Concrete from old building.
• Crushed concrete reused as aggregate for concrete floors.
• Glass from old building reused in new building as
• Glassphalt
• Terrazzo concrete
• Glazing
• Reuse of excavated soil on site
• Refer online sources such as http://www.sfenvironment.org/
Reuse – 2065Strategies
Pacific Team AEC Project 2008
• Steel and Concrete
• Reusable / Recyclable
• Keep as simple as possible
• Easy to disassemble
• Standardize
• Easier in next building to reuse as is
Site PlanBoth Projects
Pacific Team AEC Project 2008
Site PlanEquipment
Pacific Team AEC Project 2008
Mobile Crane – 200 ft 9 ton
Truck-Mounted Concrete PumpExcavatorRoad Roller
WaveScheduling
Pacific Team AEC Project 2008
Steel schedule
Concrete schedule
Foundation done
Building close-inInteriors done
Foundation done
Building close-in Interiors done
112015
123015
Hi-TechScheduling
Pacific Team AEC Project 2008
Steel schedule
Concrete schedule
Foundation done
Building close-inInteriors done
Foundation done
Building close-in Interiors done
111015
121515
EstimateComparison
Pacific Team AEC Project 2008
3%
20%
7%
30%
40%
Wave- Concrete$ 7,985,000
3%
21%
38%31%
7%
2%
23%
34%33%
8%
Wave- Steel$ 7,692,000
2%
22%
8%
32% 36%
Hi Tech- Steel$ 7,247,000
Hi Tech- Concrete$ 7,314,000
SUBSTRUCTURE
SHELL
INTERIORS
SERVICES
EQUIPMENT & FURNISHINGS
SPECIAL CONSTRUCTION
BUILDING SITEWORK
EstimateComparison
Pacific Team AEC Project 2008
Wave- Steel
• Steel columns and beams, shear walls
• 11,000 sft excavation
• curved walls
• organic atrium
• green roof over auditorium
Wave- Concrete
• shear walls, columns and beams
• 11,000 sft excavation
• curved walls
• organic atrium
• green roof over auditorium
Hi Tech- Steel
• steel frame with braces
• 3820 sft excavation
• sloped walls
• “floating” atrium
• -
Hi Tech- Concrete
• shear walls, columns and braces
• 3820 sft excavation
• sloped walls
• “floating” atrium
• -
Concrete vs. SteelComparison
Pacific Team AEC Project 2008
Steel: •Light weight
• Faster Schedule
• More headroom
• Easier to cantilever
• More common in America
• High Inflation! Low supply.
• Value ?
Concrete:• Safety• Lower insurance! • Relatively easier to source material. • Relatively less inflation• Slower schedule• Less flexible with respect to services
Decision MatrixBoth Projects
Pacific Team AEC Project 2008
Convey Big Idea
Be Sustainable
Enhance User Experience
Be Safe and Constructible
Optimize Construction
…..HIGH LEVEL GOALS…..
Decision Matrix
Pacific Team AEC Project 2008
-3
-2
-1
0
1
2
3
Goal . Be Sustainable
Goal . Enhance User Experience
Goal . Be Safe and Constructible Goal . Convey Big Idea
Goal . Optimize Construction
Wavy Steel
Wavy Concrete
High-Tech Steel
high-Tech Concrete
-3-2-10123
Goal . Be Sustainable
Goal . Enhance User Experience
Goal . Be Safe and Constructible Goal . Convey Big Idea
Goal . Optimize Construction-3
-2
-1
0
1
2
3
Goal . Be Sustainable
Goal . Enhance User Experience
Goal . Be Safe and Constructible Goal . Convey Big Idea
Goal . Optimize Construction
WAVESTEEL
WAVECONCRETE
-3
-2
-1
0
1
2
3
Goal . Be Sustainable
Goal . Enhance User Experience
Goal . Be Safe and Constructible Goal . Convey Big Idea
Goal . Optimize Construction
HI TECHSTEEL
-3
-2
-1
0
1
2
3
Goal . Be Sustainable
Goal . Enhance User Experience
Goal . Be Safe and Constructible Goal . Convey Big Idea
Goal . Optimize Construction
HI TECHCONCRETE
COMPARITIVE ANALYSIS
Spider Diagram
Decision MatrixComparative Values
Pacific Team AEC Project 2008
0
50
100
150
200
250
S tu d e n t
Wavy Steel
Wavy Concrete
High-Tech Steel
high-Tech Concrete
HI TECH
WAVESTEEL
WAVECONCRETE
HI-TECHSTEEL
HI-TECHCONCRETE
WAVE
Challenges: Two alternatives ranked very closelyHigh sensitivity to preferences
Next Steps: Incorporate owner’s Preferences
Team ProcessDecision Matrices
Pacific Team AEC Project 2008
• 4#, one for each option:
• Wave Square footprint
• Wave Double-Diamond
• Hi-Tech Square
• Hi-Tech Double-Diamond
• One general for different architectural aspects
Team ProcessWinter Quarter Work Plan
Pacific Team AEC Project 2008
Team ProcessStuff & Actions, Weekly Meetings
Pacific Team AEC Project 2008
Stuff & Actions list
• Instead of To-Do lists
• Stuff are ideas
• Stuff should become Actions after reviewing, doable itemsWeekly Meetings
• Circulating Facilitator and Recorder
• Focused on Decisions
Team ProcessImprovements for Spring Quarter
Pacific Team AEC Project 2008
• Create Gantt chart with Goals
• Create a proper schedule of activities
• More contact with Owners
• Better synchronized work
• Find ways to overcome failing technology
The End
what questions do you have?
Pacific Team AEC Project 2008
MEPStrategy
Pacific Team AEC Project 2008
• Central heating and cooling plant on campus
• Spaces divided into exterior facing and interior zones.
• Maximize natural ventilation
• Leverage thermal mass
• Grouping by Thermal load
: N
: E, W, S