NEW VIRTUA VOORHEES HOSPITAL

Voorhees, NJ

Paul StewartStructural OptionSenior Thesis Presentation 2010The Pennsylvania State University

Paul Stewart 4/12/2010Structural Option

PRESENTATION OUTLINE

•Introduction• Existing Structural System• Proposal• Design of Helipad• Redesign of Lateral System• Breadth Study• Conclusion

BUILDING LOCATION

Virtua Hospital

•Introduction• Existing Structural System• Proposal• Design of Helipad• Breadth Study• Redesign of Lateral System• Conclusion

BUILDING DATA

• Introduction•Existing Structural SystemGravity System

• Proposal• Design of Helipad• Breadth Study• Redesign of Lateral System• Conclusion

EXISTING STRUCTURAL SYSTEM

• Introduction•Existing Structural SystemGravity System

Foundations - Geopiers

• Introduction•Existing Structural SystemLateral System

Moment Frames Braced Frames

• Introduction• Existing Structural System•Proposal• Design of Helipad• Breadth Study• Redesign of Lateral System• Conclusion

RELOCATION OF HELIPAD

• Introduction• Existing Structural System•Proposal• Design of Helipad• Breadth Study• Redesign of Lateral System• Conclusion

REDESIGN OF LATERAL SYSTEM

• Introduction• Existing Structural System• Proposal•Design of HelipadHelipad Location

• Breadth Study• Redesign of Lateral System• Conclusion

HELIPAD REQUIREMENTS

• Introduction• Existing Structural System• Proposal•Design of HelipadHelipad Location

LOCATION OF HELIPAD

• Introduction• Existing Structural System• Proposal•Design of HelipadHelipad Design

PRESENTATION OUTLINE HELIPAD SLAB DESIGN

Reinforcement In Slab SectionsSection A Section B Section C Section D

Column Strip (4) #5 (8) #5 (6) #5 (11) #5Middle Strip (4) #5 (4) #5 (6) #5 (6) #5Flexural Beam

(4) #8 (9) #8 (3) #8 (5) #8

Shear Beam N/A (2) #4 @ 8” N/A (2) #4 @8”

• Introduction• Existing Structural System• Proposal•Design of Helipad

Helipad Design• Breadth Study• Redesign of Lateral System• Conclusion

HELIPAD SLAB DESIGN

GRAVITY COLUMN REDESIGN

TRANSFER GIRDER

NEW COLUMN

COLUMN SIZESLocation Level Old Size New Size

Corner ColumnsPerimeter Columns

7 – Roof W14x61 W14x68

5 – 7 W14x74 W14x90

4 – 5 W14x74 W14x90

2 – 4 W14x74 W14x90

Ground – 2 W14x90 W14x109

Center Columns 7 – Roof W14x61 W14x109

5 – 7 W14x90 W14x145

4 – 5 N/A W14x145

2 – 4 N/A W14x176

Ground – 2 N/A W14x233

End Column 7 – Roof W14x61 W14x90

5 – 7 W14x90 W14x132

4 – 5 N/A W14x132

2 – 4 N/A W14x145

Ground – 2 N/A W14x193

• Introduction• Existing Structural System• Proposal• Design of Helipad•Breadth StudyAcoustical

• Redesign of Lateral System• Conclusion

ACOUSTICAL

dB’s Recorded in Patient’s RoomType of Material dB’s in Room¼” Glass 47.3¼” Laminated Glass and 3/16” Glass with a 2” Airspace

¼” Laminated Glass and 3/16” Glass with a 4” Airspace

(2) ¼” Laminated Glass with ½” Airspace 38.3

Example Sound LevelsType of Sounds dB’sHelicopter 105Average Office Noise 50Quiet Conversation 40Quiet Office 30Quiet Living Room 20

• Introduction• Existing Structural System• Proposal• Design of Helipad• Breadth Study•Redesign of Lateral SystemLateral Loads

• Conclusion

LATERAL LOADS

SEISMIC DESIGN CRITERIASite Class D

Seismic Design Category

Occupancy Category

Type of Lateral System

Ordinary Steel Concentrically Braced Frames

LATERAL BASE SHEARSNorth – South

DirectionEast – West Direction

Old Seismic Loads

1539.6 kips 1319.8 kips

New Seismic Loads

1314.1 kips 1314.1 kips

Wind Loads 1357.9 kips 1376.8 kipsControlling Load

Wind Wind

• Introduction• Existing Structural System• Proposal• Design of Helipad• Breadth Study•Redesign of Lateral SystemRAM Model

• Conclusion

RAM MODEL

Applied Lateral Load Cases:• Seismic• Wind Case 1 – 4

Applied Load Combinations:• 1.4D• 1.2D + 1.6L + .5(Lr or S)• 1.2D + 1.6(Lr or S) + (L or 0.8W)• 1.2D + 1.6W + L + 0.5(Lr or S)• 1.2D + 1.0E + L + 0.2S• 0.9D + 1.6W • 0.9D + 1.0E

• Introduction• Existing Structural System• Proposal• Design of Helipad• Breadth Study•Redesign of Lateral SystemBraced Frame Design

• Conclusion

LOCATION OF BRACES

• Conclusion

TYPICAL BRACES

• Conclusion

INTERACTION WITH THE ARCHITECTURE

• Braces do not interfere with rooms or hallways

• Braces are visible at the interior courtyards

• Introduction• Existing Structural System• Proposal• Design of Helipad• Breadth Study•Redesign of Lateral SystemLateral Calculations

• Conclusion

Max Wind Drift Max Seismic DriftΔ North – South:

Δ = 2.33”

H/400 = 4.2”

East – West: Δ = 1.31”

H/400 = 4.2”

Δ Δ North – South: Δ = 2.93”

0.010*H = 16.8”

East – West: Δ = 4.16”

0.010*H = 16.8”

Δ = Cd * δ I

ExistingNorth – South:

Δ = 0.83”

ExistingEast – West:

Δ = 0.13”

ExistingNorth – South:

Δ = 0.25”

ExistingEast – West:

Δ = 0.35”

Δ = Cd * δ I

• Introduction• Existing Structural System• Proposal• Design of Helipad• Breadth Study•Redesign of Lateral SystemLateral Calculations

• Conclusion

CENTER OF MASS/RIGIDITY

Differences in Center of Mass and Center of Rigidity

Level Existing N-S New N-S Existing E-W New E-W9 10.4’ 27’ 3.1’ 2.2’8 4.3 68.6’ 0.6’ 1.6’7 20.6’ 3.9’ 0.5’ 1.6’6 4.6’ 20.6’ 0.2’ 2.2’5 60.0’ 7.9’ 18.8’ 15.0’4 51.3’ 11.1’ 25.9’ 22.8’3 21.2’ 2.3’ 23.7’ 28.1’2 25’ 1.5’ 14.9’ 25.4’1 1.2’ 11.3’ 30.0’ 47.8’

• Introduction• Existing Structural System• Proposal• Design of Helipad• Breadth Study• Redesign of Lateral System•Conclusion

CONCLUSIONS

• Helipad will be located in Zone 5• The Pad will be designed as a two – way slab• New columns will be introduced along column line

Ma• The façade of the building will be changed• Lateral system will eliminate of moment frames

• Braced frames will not interfere with the architecture

• Drift values will be larger, but still acceptable• Differences in COM and COR are generally the

ACKNOWLEDGEMENTS

Thank you to the following people for their help throughout the year:

• Virtua Health• Turner Company• Penn State Architectural Engineering Faculty and Students• Family and Friends

QUESTIONS? COMMENTS?

Questions?

PRESENTATION OUTLINE FOUNDATION REDESIGN

NEW VIRTUA VOORHEES HOSPITAL

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