Swedish American Hospital Heart and Vascular Center
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Transcript of Swedish American Hospital Heart and Vascular Center
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Swedish American HospitalHeart and Vascular Center
Philip FrederickStructural OptionAE Senior Thesis
15 April 2008
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Philip Frederick Structural Option April 15 2008
Presentation Outline
• Project Background• Site Plan• Proposal• Gravity Framing• Lateral Framing• Façade Analysis• Conclusions/Recommendations
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Philip Frederick Structural Option April 15 2008
Project TeamOwner: Swedish American HospitalArchitect: Perkins + Will ArchitectsStructural Engineer: Simpson Gumpertz and HegerConstruction Management: Turner Construction
Project InformationLocation: Rockford, ILFloors: 4 stories (designed for 7)Floor Plate: 25,000SF per floor (175,000SF total)
The Heart Hospital
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Philip Frederick Structural Option April 15 2008
Presentation Outline
• Project Background• Site Plan• Proposal• Gravity Framing• Lateral Framing• Façade Analysis• Conclusions/Recommendations
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Philip Frederick Structural Option April 15 2008
Site Plan
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Philip Frederick Structural Option April 15 2008
Site Plan
N
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Philip Frederick Structural Option April 15 2008
Presentation Outline
• Project Background• Site Plan• Proposal• Gravity Framing• Lateral Framing• Façade Analysis• Conclusions/Recommendations
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Philip Frederick Structural Option April 15 2008
Goals
Depth Study Depth Study
•Reduce member sizes & steel cost
• Reduce Drift
Proposals
Breadth Study
• Analyze Window Condensation
Breadth Study
• Develop Repairs
• Ordinary Steel Braced Frames
• Alternative Gravity Framing Layouts
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Philip Frederick Structural Option April 15 2008
Presentation Outline
• Project Background• Site Plan• Proposal• Gravity Framing• Lateral Framing• Façade Analysis• Conclusions/Recommendations
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Philip Frederick Structural Option April 15 2008
Depth Study : Gravity Analysis
Existing Framing
N
Central Framing
Wing Framing
Wing Framing
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Philip Frederick Structural Option April 15 2008
Depth Study : Gravity Analysis
Alternative Framing
1
2 4
3
1
2
3
4
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Philip Frederick Structural Option April 15 2008
Depth Study : Gravity Analysis
Alternative Framing
Gravity Framing Floor Framing Column Framing Total Weight (lbs) # of Pieces
Floor Plan # of Members Studs Weight (lbs) # of Members Weight (lbs) (assume 10lb/stud)
Existing Floor 701 7,813 399,802 42 87,242 565,174 743
Floor Alt 1 687 8,013 445,443 30 69,788 595,361 717
Floor Alt 2 589 7,575 476,404 24 59,157 611,311 613
Floor Alt 3 603 7,546 463,162 30 67,614 606,236 633
Floor Alt 4 575 7,655 488,753 18 50,655 615,958 593
Wing Existing 322 3,088 120,742 24 41,852 193,474 346
Wing Alt 1 266 3,288 183,358 12 19,618 235,856 278
Wing Alt 2 210 3,004 177,886 12 22,388 230,314 222
Wing Alt 3 196 3,094 211,792 6 8,502 251,234 202
Wing Alt 4 196 3,074 190,376 6 13,886 235,002 202
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Philip Frederick Structural Option April 15 2008
Depth Study : Gravity Analysis
Typ. Composite Beams vs Castellated Beams
What does it take to reduce the weight of the gravity
framing?
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Philip Frederick Structural Option April 15 2008
Depth Study : Gravity Analysis
Typ. Composite Beams vs Castellated Beams
Existing Framing Layout
Alt #4 Layout with Cast.
Beams
W = 565,174lbs743 Members
Central Framing Only
W = 559,337lbs593 Members
$427,715 $595,296(*Charlie Carter) (*R.S. Means)
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Philip Frederick Structural Option April 15 2008
Presentation Outline
• Project Background• Site Plan• Proposal• Gravity Framing• Lateral Framing• Façade Analysis• Conclusions/Recommendations
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Philip Frederick Structural Option April 15 2008
Depth Study : Lateral Analysis
Proposed Braced Frames
N
Typ. Floor Plan
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Philip Frederick Structural Option April 15 2008
Depth Study : Lateral Analysis
Trial Brace Sizes
Columns:W14x120
Beams:W16x50
Braces:HSS6x6x1/2
Assumptions:• 4 frames in each direction (x and y)• rigid diaphragm• 25% of lateral load dist. to each frame
Loads:• Vwind = 1045k• Veq = 978k
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Philip Frederick Structural Option April 15 2008
Depth Study : Lateral Analysis
Proposed Braced Frames
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Philip Frederick Structural Option April 15 2008
Depth Study : Lateral Analysis
Prop. Braced Frames vs Ex. Moment Frames
3.6”2.1”
Columns:W14x176
Lat. Beams:W27x146
Columns:W14x120
Lat. Beam:W21x68
Braces:HSS6x6x3/8
toHSS8x6x5/8
H 400
< = 3.0”
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Philip Frederick Structural Option April 15 2008
Depth Study : Lateral Analysis
Ex. Moment Frames vs Prop. Braced Frames
Project Cost ComparisonMoment Frames
Item Pieces Weight (Tons) Cost/lb Mat'l Cost Divisor Factor Steel CostGravity Beams 925 309.6 0.44 $272,448 0.27 $1,009,067Lateral Beams 210 444.5 0.44 $391,160 0.27 $1,448,741Gravity Columns 42 47.7 0.44 $41,976 0.27 $155,467Lateral Columns 120 349.5 0.44 $307,560 0.27 $1,139,111
Total Mat'l Cost $1,013,144 Total Steel Cost $3,752,385
Braced FramesItem Pieces Weight (Tons) Cost/lb Mat'l Cost Divisor Factor Steel Cost
Gravity Beams 1065 418.1 0.44 $367,928 0.27 $1,362,696Lateral Beams 70 22.8 0.44 $20,064 0.27 $74,311Gravity Columns 102 102.1 0.44 $89,848 0.27 $332,770Lateral Columns 60 142.4 0.44 $125,312 0.27 $464,119Lateral Braces 108 29.9 0.49 $29,302 0.27 $108,526
Total Mat'l Cost $632,454 Total Steel Cost $2,342,422
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Philip Frederick Structural Option April 15 2008
Estimated Cost $aving$
Ex. Moment Frames
•$3,752,385
• 1297 members
• 38 days of construction(35 pieces/day)
Other Considerations for Savings:
Prop. Braced Frames
•$2,342,422
• 1405 members
• 21 days of construction(70 pieces/day)
Difference
• -$1,409,963
• +108 members
• -17 days of construction(70 pieces/day)
• Smaller Crane Size
• Schedule Savings
• Connections
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Philip Frederick Structural Option April 15 2008
Presentation Outline
• Project Background• Site Plan• Proposal• Gravity Framing• Lateral Framing• Façade Analysis• Conclusions/Recommendations
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Philip Frederick Structural Option April 15 2008
Breadth Study : Facade
Issues:
• moisture condensation
Solutions/Repairs:
• Active
• Passive
Drawings/Details:
• Manufacturer’s detail
• Construction Drawings
• Existing Conditions
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Philip Frederick Structural Option April 15 2008
Breadth Study : Facade
Manufacturer’s Detail
Kawneer Windows
• Kawneer 5500 Isoweb Window
• Continuous Thermal Barrier
• Insulation under sill
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Philip Frederick Structural Option April 15 2008
Breadth Study : Facade
Existing Conditions
Exterior15°f
Interior76°f
30%rh
42°f
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Philip Frederick Structural Option April 15 2008
Breadth Study : Facade
Proposed Solutions - Active
New Construction:
• spec new window system
• move existing window inboard
• install insulation where needed
As - Built:
• spec new window system
• moving existing window inboard
• remove sill/install insulation
• heat trace
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Philip Frederick Structural Option April 15 2008
Breadth Study : Facade
New Window System
Kawneer 5525 Isoweb Window
• minimizes discontinuity in the thermal barrier
ISOWEB 5525 ModelISOWEB 5500 Model
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Philip Frederick Structural Option April 15 2008
Breadth Study : Facade
Move existing window inboard
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Philip Frederick Structural Option April 15 2008
Breadth Study : Facade
Install spray foam insulation below window frame
Remove sill piece and install spray foam insulation below existing window frame
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Philip Frederick Structural Option April 15 2008
Breadth Study : Facade
Install Heat Trace along interior window frame
Install prefabricated aluminum sill attachment over heat trace wire to create a heat sink
Heat trace wire
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Philip Frederick Structural Option April 15 2008
Breadth Study : FacadeProposed Solutions - Passive
As - Built:
• Supply/direct more warm air from hvac ducts to window surface
• Lower the relative humidity level (check building codes and ASHRAE standards)
• Lower the temperature of the room
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Philip Frederick Structural Option April 15 2008
Presentation Outline
• Project Background• Site Plan• Proposal• Gravity Framing• Lateral Framing• Façade Analysis• Conclusions/Recommendations
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Philip Frederick Structural Option April 15 2008
Conclusions : Depth Study
Gravity Analysis
• Existing framing is lighter than alternative framing plans
• Castellated beams can reduce weight (5837lbs) – 39% increase in cost
Structural Engineer chose the best gravity system layout
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Philip Frederick Structural Option April 15 2008
Conclusions : Depth Study
Lateral Analysis – Braced Frames
• Reduces member sizes
• Decreases weight of structural steel
• Increases lateral stiffness
• Reduces drift by 1.5”
• Quicker construction
Braced Frames are a suitable alternative to moment frames
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Philip Frederick Structural Option April 15 2008
Conclusions : Breadth Study
Façade Analysis
Option 1:Reduce the relative humidity in patient rooms
Option 2:Install Heat Trace along exposed edges of window sills
• Least destructive• Inexpensive• Code dependant
• Minimal construction• Most cost effective of active solutions• Third party consultant
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Philip Frederick Structural Option April 15 2008
Thank You
Questions?
Statistics of Heart Failure
% of thesis complete
Time