team central winter presentationslide 1 of 65 winter presentation aec global team class 2002 winter...
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Team Central Winter Presentation slide 1 of 65
Winter Presentation
AEC Global Team Class 2002
Winter presentation
Team Central
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Introuction to area
•Existing campus of San Francisco University•Urban campus in downtown San Francisco•Hilly area near Golden Gate Park•Surrounded by living area
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Introduction to site – campus overview
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Introduction to site – location of potential building sites
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Introduction to site – sourrounding / texture
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Introduction to site – location of building sites
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Soil Data from USGS
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Soil Data from USGS
Soil Profile• 10’ of Serpentine Sand• 140’ of Dune Sand
Soil Properties• N1,60 = 15 to 25• Friction Angle = 39°
Our Site
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Design Concept #1 – location and shape
• location at main entrance
• flat ground
• next to road and internal street
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Design Concept #1 – global directions and spatial concept
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concept
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Basement and 1st floor
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2nd and 3rd floor plans
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Indoor detail
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Design Concept #1 – conceptual sketch
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Details
• Prefabrication of structure and boxes• Inexpensive industrial materials like
translucent polycarbonate sheets, engineered wood (MDF)
• Indirect lightening through skylight in atrium• Modern contrast to sourounding as entrée to
campus
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Load Assumptions
• Dead Load PSFConcrete floor 50Structural Framing 4Ceiling 3MEP 8Partitions 10Total Dead Load 75 PSF
• Live LoadSchool Building 50 PSF
• Seismic LoadSeismic Zone 4Near Source EffectBase Shear (UBC 97)
Steel braced frame = 0.3WConcrete shear wall = 0.3W
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Design 1 Structural Solution: Steel
45’12’8”
Foundation6’x6’x3’
ColumnsW14 sections
GirdersW24 sections
BeamsW12 sections
EBFTS 10”x10”
X-BraceTS 10”x10”
Slab5” Composite
Steel Deck
N
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Typical Concentric Brace Connection
• 10” TS structural tubes
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Typical Eccentric Brace Connection
• 10” TS structural tubes
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Load Path
N
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Design 1 Structural Solution: Reinforced Concrete
N
Foundation6’x6’x4’
Beams10”x14”
Shear wall10” thick
Slab10” Post-tensioned
Columns14”x14”
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Comparison of the 2 structural systems for Design 1
Advantages Disadvantages
•Thinner members•More window space
•Deep girder sections•Higher ceiling required•Beam penetrations
Advantages Disadvantages
•PT slabs allow more ceiling space•No girders needed
•Thicker members•Fewer window space
Steel Option
Concrete Option
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Shelves & boxes - Construction sequence
• Excavation
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Design 1 – steel Construction sequence
• Basement construction and backfill
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Design 1 – steel Construction sequence
• First two stories: columns, beams, slabs
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Design 1 – steel Construction sequence
• Second and third stories
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Design 1 – steel Schedule
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Design 1 – concrete Construction sequence
• Story by story
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Design 1 – concrete Construction sequence
• Story by story
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Design 1 – concrete Construction sequence
• Story by story
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Design 1 – concrete Schedule
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Design 1 Site layout
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Design 1 Site layout
• Fence• Field office• Way in/out
Office
Golden Gate Street
to university
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• Excavation 20’ around the building
• Soldier piles along the road
Golden Gate Street
Office
soldier piles
Design 1 Site layout: excavation
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• Storage area• Tower crane
(concrete)• Truck crane
(steel)
Golden Gate Street
OfficeStorage
area
Design 1 Site layout: erection
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• More storage area
• Access to the labs
Golden Gate Street
OfficeStorage
area
Access to the labs
Design 1 Site layout: interiors
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Design 1 Cost estimates
A. Substructure 209 959 6% 213 171 6%
B. Shell 982 668 29% 1 203 923 34%
C. Interiors 628 102 19% 623 966 17%
D. Services 1 532 648 46% 1 532 648 43%
E. Furnishings 3 795 0% 3 795 0%
Subtotal: 3 357 172 3 577 503
10% 285 360 304 0887% 199 752 212 861
10% 335 717 357 750
Subtotal: 4 178 000 4 452 202
1,085 4 533 130 4 830 640
1,23 5 575 750 5 941 687
Structural system: 414 503 732 882
2015 index
Incl
udin
g O
&P
Option A: steel Option B: concrete
General requirementsArchitect feeContingency
Location index
0
1
2
3
4
5
6
7
Steel Concrete
mill
ion
$
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Design Concept #2 – location of site
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Design Concept #2 – slope
• Slope esitmated on photographs
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Design Concept #2 – slope - section
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model
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Model2
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Sections 1
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Sections 2
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Floors 1 - 3
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lounge / CEO6th5th4th
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Foundation6’x6’x4’
Design 2 Structural Solution: Reinforced Concrete
25’
20’
N
Shear walls10” thick
Slab5” two-way
Girders10”x16”
Columns16”x16”
Retaining walls12” thick
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Foundation6’x6’x4’
ColumnsW14 sections
GirdersW18 sections
Retaining walls12” thick
Design 2 Structural Solution: Steel
N
Slab5” composite deck
CBFTS 10”x10”
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Comparison of the 2 structural systems for Design 2
Advantages Disadvantages
•Thinner members•More window space
•Moment frames required•More bays needed for lateral force resisting systems
Advantages Disadvantages
•Take advantage of retaining walls•Ideal bay size for 2-way slabs
•Larger members•Difficult to analyze
Steel Option
Concrete Option
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Design 2 – concrete Construction sequence
• Soldier piles & excavation
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Design 2 – concrete Construction sequence
• Perimeter walls and columns
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Design 2 – concrete Construction sequence
• Retaining walls and backfill
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Design 2 – concrete Construction sequence
• Floor system
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Design 2 – Concrete Schedule
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Design 2 – Steel Construction sequence
• Perimeter walls without columns
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Design 2 – Steel Construction sequence
• Steel erection
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Design 2 – steel Schedule
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Design 2 Site layout: general view
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Design 2 Site layout
Golden Gate Street
Office
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Design 2 Site layout: Excavation
Golden Gate Street
Office
Soldier piles & lagging
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Design 2 Site layout: Erection
Golden Gate Street
Office
Storage area
Storage area
unloading
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Design 2 Cost estimates
0
1
2
3
4
5
6
Steel Concrete
mill
ion
$
A. Substructure 251 311 8% 257 885 8%
B. Shell 849 591 27% 874 893 28%
C. Interiors 510 857 16% 504 565 16%
D. Services 1 532 648 49% 1 532 648 48%
E. Furnishings 3 795 0% 3 795 0%
Subtotal: 3 148 202 3 173 786
10% 267 597 269 7727% 187 318 188 840
15% 472 230 476 068
Subtotal: 4 075 348 4 108 466
1,085 4 421 752 4 457 685
2015 index 1,23 5 438 755 5 482 953
late delivery of labs: 22 500 22 500
TOTAL: 5 461 255 5 505 453
Structural system: 409 910 435 067
Contingency
Location index
Incl
udin
g O
&P
Option A: steel Option B: concrete
General requirementsArchitect fee
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Decision matrix
Shelves Pueblo
Steel Concrete Steel Concrete
A• open space• original design intention (shelf)
•looks heavy • lesser daylight• better climate
•freedom in facade-design• reconfigurable rooms
•nice texture• better climate
E
• Light, thin members• Window space
• More ceiling space• Less window space
• Light members• Mix with concrete construction
• Take advantage of retaining walls• Ideal for 2-way slabs
C• repetitiveness• fast erection
• repetitiveness• no interface
• larger site• complex earthwk
• complex earthwk• tight schedule
$ 5.57M 5.94M 5.46M 5.51M
Mostpreferred
Least preferred
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Team process
• Getting used to new tools– Group Space– e-mail vs. Discussion Forum– Chat vs. video-conference
• Interactions between disciplines– Mostly sequential– Will try to improve