1. The Odyssey Condominium Aaron Snyder Arlington, Virginia
Structural Option
Senior Thesis
Spring 2006

2. The Odyssey Condominium Building Introduction Structural Description
Arlington, Virginia
Outline
Building Introduction
Structural Description
Proposal
Structural Design
Flat Plate
Columns
Lateral System
Construction Study
Cost Comparison
Schedule Comparison
Building Envelope
Conclusion
Acknowledgments

3. The Odyssey Condominium Location Arlington, Virginia - Court District
Building Introduction
Arlington, Virginia
Location
Arlington, Virginia - Court District
15th Street and Clarendon Boulevard

4. The Odyssey Condominium Total Area: 475,650 sq. ft.
Building Introduction
Arlington, Virginia
Total Area: 475,650 sq. ft.
16 Level Residential Tower (1-16)
320 Condominium Units
Custom Platinum Suites
3 Levels of Underground Parking (B3-B1)
2-3 Story Townhouses
"Special Affordable Housing Protection District" (SAHPD)
Commercial Space
Project Cost: $65 Million
Project Duration: April 2004 – June 2006

5. The Odyssey Condominium Owner Monument Realty, LLC
Design Professionals
Arlington, Virginia
Owner Monument Realty, LLC
Architect Shalom Baranes Associates
Structural Ehlert / Bryan Inc.
Engineer
Construction Donohoe Construction Co.
Manager
Mechanical Mendoza, Ribas, Farinas & Associates
Curtain wall Emmitsburg Glass Co.
Concrete SMC Concrete Construction, Inc.

6. The Odyssey Condominium Building Envelope:
Building Introduction
Arlington, Virginia
Building Envelope:
Full Height Aluminum Curtain Walls
- East Elevation
Brick Veneer and Sliding Windows
Mechanical:
Residential Units: CFM water to air heat pumps
14,000 CFM HVAC unit supplies 100% outside air to public corridors
Architecture:
Concrete column and steel-beam trellis framework

7. The Odyssey Structural Description Condominium Building Introduction
Arlington, Virginia
Outline
Building Introduction
Structural Description
Proposal
Structural Design
Flat Plate
Columns
Lateral System
Construction Study
Cost Comparison
Schedule Comparison
Building Envelope
Conclusion
Acknowledgments

8. The Odyssey Condominium Floor Systems Garage Levels:
Structural Description
Arlington, Virginia
Floor Systems
Garage Levels:
8.5” 2-way Reinforced Flat Plate
w/ Drop Panels
Concrete Strength:
Levels B3-B1 5000psi
Residential Levels:
8” 2-way Post-Tensioned Flat Plate
Levels psi
Levels psi
25’ x 22’ and 25’ x 28’

9. The Odyssey Condominium Columns Residential Levels:
Structural Description
Arlington, Virginia
Columns
Residential Levels:
18” x 26” with #11 bar reinforcement (TYP.)
Concrete Strength:
Levels 1-4 : 8000psi
Levels 5 : 6000psi
Levels 6-16 : 5000psi
- Concrete Strength Varies to Maintain Uniform Size
Foundation
Concrete Column Footings
Partial Mat Footings

10. The Odyssey Condominium Lateral System Dual System: A
Structural Description
Arlington, Virginia
Lateral System
Dual System:
Concrete Shear Walls 4000psi
Ordinary Concrete Moment Frames
- Slab Frame System
Shear Walls:
A & B: B3 – 4th Levels
14” x 10’-0”
10” x 17’-0”
C , C1 : 1st – 16th Levels
10” x 13’-10.5”
E: 1st – 14th Levels
10” x 29’-5”
Reinforcement: #5 & 12” A E B
C,C1

11. The Odyssey Proposal Condominium Building Introduction
Arlington, Virginia
Outline
Building Introduction
Structural Description
Proposal
Structural Design
Flat Plate
Columns
Lateral System
Construction Study
Cost Comparison
Schedule Comparison
Building Envelope
Conclusion
Acknowledgments

12. The Odyssey Is There a Feasible Alternative Floor System ?
Condominium
Arlington, Virginia
Proposal
The Odyssey was designed with consideration of height restrictions
A minimum floor-to-floor height was required over 16 levels
An 8” 2-way post-tensioned flat plate was designed
Is There a Feasible Alternative Floor System ?
Design Criteria
Minimum Structural Depth
Maintain Existing Residential Layout
Column Locations
Maintain Floor-to-Ceiling Height: 8’ – 8”
Limit Building Height : 180’
IBC 2003 / ASCE7-02
Reinforced 2-way Flat Plate Design

13. The Odyssey Structural Design Condominium Building Introduction
Arlington, Virginia
Outline
Building Introduction
Structural Description
Proposal
Structural Design
Flat Plate
Columns
Lateral System
Construction Study
Cost Comparison
Schedule Comparison
Building Envelope
Conclusion
Acknowledgments

14. The Odyssey Condominium Design Program Design Loads: Dead: Live:
Structural Design
Arlington, Virginia
Design Program
Design Loads:
Dead: Live:
Roof psf Roof 30 psf
Mech. 150 psf Mech. 150 psf
Res psf Res psf
Façade 32 psf Public psf

15. The Odyssey Condominium Flat Plate Thickness
Arlington, Virginia
Flat Plate Design
Flat Plate Thickness
Minimum Thickness – ACI Table 9.5(c)
Exterior Panel Without Edge Beams ln/ ”
Interior Panel ln/ ”
Maximum Deflection – 5000psi Slab
Long Term Dead Load
/ Short Term Live Load l/480
Δmax = Δcol x,y + Δmid y,x ” ok
Punching Shear – ACI
Vc = 4 √f’c bo d Controlled ” ok

16. The Odyssey Condominium Offset Column Design Strip Idealization
Arlington, Virginia
Flat Plate Design
Offset Column Design Strip Idealization
Offset Strip
Design Strip

17. The Odyssey Condominium Equivalent Frame Method - ADOSS
Arlington, Virginia
Flat Plate Design
Equivalent Frame Method - ADOSS
Residential: Dead Load (27psf) / Live Load (40psf)
Minimum Development Lengths
Overall Steel Weight : #4 / # tons
#5 / # tons

18. The Odyssey Condominium Equivalent Frame Method - ADOSS
Arlington, Virginia
Flat Plate Design
Equivalent Frame Method - ADOSS
Lateral Analysis – 10% Story Force
Minimum Development Lengths
Overall Steel Weight : #4 / # tons
Lateral : #4 / # tons

19. The Odyssey 22” x 28” Condominium Large Tributary Areas
Arlington, Virginia
Column Design
Design Objectives:
Minimum Column Dimensions
Maintain Architectural Integrity
Design Uniform Column Size
Critical Columns:
Large Tributary Areas
Column Load-Take down (Public Space 100psf)
Biaxial Bending
Design Size: 20” x 26”
22” x 28”
Concrete Strength:
Levels 1-4 : 8000psi
Levels 5 : 6000psi
Levels 6-16 : 5000psi

20. The Odyssey Condominium
Arlington, Virginia
Lateral Design
Assumption: The Flat Plate Would Act as a Cracked Section Limiting Stiffness
Design Objective:
Adhere to the Existing Architectural Program
Limit Displacement (H/600) – Brick Veneer
Limit Story Drift (.02hsx) – Seismic Use Group I
Design Loads:
Wind and Seismic Loads : ASCE7-02
Analytical Procedure – Tributary Area
Equivalent Lateral Force Procedure
Seismic Controls
Account for the Increase in Building Height and Weight

21. The Odyssey Condominium Lateral Loading
Arlington, Virginia
Lateral Design
Lateral Loading
Full wind loads were applied in all principle and intermediate directions
Wind load cases were applied in accordance with ASCE7-02
Maximum drift at the building corners

22. The Odyssey Condominium Shear Walls
Arlington, Virginia
Lateral Design
Shear Walls
Added to resist imposed seismic loads
Analyzed in iterations by extruding shear walls A & B
Displacement : 6”
Lateral design adjustment

23. The Odyssey Condominium Slab Frame / Shear Walls
Arlington, Virginia
Lateral Design
Slab Frame / Shear Walls
Integrated Slab Frame – Moment Frames
The slab frame system was simulated as beams with the same structural depth as the flat plate
Shear walls A & B extended to the 14th level
Displacement : 3”

24. The Odyssey Construction Study Condominium Building Introduction
Arlington, Virginia
Outline
Building Introduction
Structural Description
Proposal
Structural Design
Flat Plate
Columns
Lateral System
Construction Study
Cost Comparison
Schedule Comparison
Building Envelope
Conclusion
Acknowledgments

25. Flat Plate Columns Shear Walls
The Odyssey
Condominium
Arlington, Virginia
Cost Comparison
Typical Residential Level: Average Square Foot Cost
Material Take-off: R.S. Means
Flat Plate Columns Shear Walls
$ 21/SF
$ 26/SF

26. The Odyssey Conclusion Condominium Building Introduction
Arlington, Virginia
Outline
Building Introduction
Structural Description
Proposal
Structural Design
Flat Plate
Columns
Lateral System
Construction Study
Cost Comparison
Schedule Comparison
Building Envelope
Conclusion
Acknowledgments

27. The Odyssey Ceiling height maintained : 8’ – 8”
Condominium
Arlington, Virginia
Conclusion
Proposed Flat Plate System:
Ceiling height maintained : 8’ – 8”
Overall building height < 180’
Increase in structural depth : 8” to 11”
Adjustment in column size
Integrated slab frame system: Added shear walls
Induced Construction Cost

28. The Odyssey
Condominium
Arlington, Virginia
Conclusion
Through my analysis I came to the conclusion that although the
proposed system met design criteria, the structural design of
the building and associated costs are more feasible with a
2-way post-tensioned flat plate design.

29. The Odyssey Condominium AE faculty : Professor M. Kevin Parfitt
Arlington, Virginia
Acknowledgements
AE faculty :
Professor M. Kevin Parfitt
Dr. Linda Hanagan
Dr. Thomas Boothby
Ehlert / Bryan Inc.
Jason Sparrow
Donohoe Construction Co.
Jon Peterson
Friends, Family, and Fellow Students

30. The Odyssey
Condominium
Arlington, Virginia ?
Questions