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Food and Drug Administration

Food and Drug Administration. Center for Drug Evaluation and Research. O ffice Building 2. Final Presentation. April 13, 2009. AE Senior Thesis. composed by:. Michael O’Mara Spear. structural option. advisor:. M. Kevin Parfitt. Outline. AE Senior Thesis. Final Presentation.

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Food and Drug Administration

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  1. Food and Drug Administration Center for Drug Evaluation and Research Office Building 2 Final Presentation April 13, 2009 AE Senior Thesis composed by: Michael O’Mara Spear structural option advisor: M. Kevin Parfitt

  2. Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions

  3. Outline AE Senior Thesis Final Presentation April 13, 2009 - building information - Center for Drug Evaluation and Research (CDER) • structural depth • steel redesign - 6-Story research office building • progressive collapse • enclosure breadth - Located in White Oak, MD • conclusions Site Location and Campus

  4. Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth Existing Typical Plan Interior Atrium • conclusions - Two office wings connected by open atrium - Consistency throughout CDER2 - Offices with a view

  5. Outline AE Senior Thesis Final Presentation April 13, 2009 - building information CDER2 Elevation • structural depth • steel redesign • progressive collapse • Office wings employ brick façade • w/ punch windows • enclosure breadth • Accent aluminum panel and • mullion system • conclusions - Atrium glass curtain wall Interior Atrium

  6. Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign Frame Layout • progressive collapse • enclosure breadth • Approx. 30’x30’ bays • conclusions - Two-way flat slab floor system - 9.4” floor with 7” drop panels Existing Typical Plan

  7. Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign Existing Typical Sizes • progressive collapse • enclosure breadth • Concrete moment frame with • perimeter beams • conclusions - Two main column geometries - Uniform grid spacing Existing Typical Plan

  8. Outline AE Senior Thesis For my thesis… Final Presentation April 13, 2009 - building information • Alternate structural steel framing • system explored • structural depth • steel redesign • Progressive collapse concerns • considered • progressive collapse • enclosure breadth • conclusions

  9. Loads: Office: SDL = 20psf (mechanical, ceiling, access floor) LL = 80psf Public/Egress: SDL = 20psf (mechanical, ceiling, access floor) LL = 100psf Roof: SDL = 42psf (mechanical, ceiling, roofing, insulation, paver) LL = 32psf Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse Load Combinations: • enclosure breadth • conclusions

  10. - Vulcraft Floor Deck Catalog Outline AE Senior Thesis - 2VLI 2”, 20 guage metal deck selected Final Presentation April 13, 2009 - building information - Size controlled by construction loading • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions 2VLI 2” Dimensions

  11. - Steel moment frame system utilized Outline - Beams gravity only (blue)- Girders + Columns makeup the frames AE Senior Thesis Final Presentation - 30’x30’ bay size remained April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions Typical Frame Layout

  12. - Wind and Seismic lateral loads Outline Wind Speed = 90mph Kd = 0.85Occupancy = IIImportance = 1Exposure = B Site Class = C Fa = 1.2Importance = 1 Fv = 1.7Ss = 0.155g TL = 8.0sS1 = 0.050g R = 3 AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions RAM Model – Standard Loading

  13. - Steel moment frame sizes typical gravity beam = W16x26typical interior girder = W21x57, W21x50typical exterior girder = W21x50base interior column = W12x106base exterior column = W12x72base atrium column = W12x120 Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions Typical Section w/ Member Sizes New Steel Plan

  14. - AP, linear static analysis Outline - Removal of critical load bearing element AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions Critical Column Locations

  15. - Loading critical bays: 2.0 [(0.9 or 1.2)D + (0.5L or 0.2S)] + 0.2W Outline AE Senior Thesis - Loading all other bays Final Presentation (0.9 or 1.2)D + (0.5L or 0.2S) + 0.2W April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions Critical Loading

  16. - Virtual work for preliminary girder sizes Outline AE Senior Thesis P * δ = ∑Mp * Ө δ = L * Ө P = ∑Mp * Ө / δ P = ∑Mp * 1/L Note: L for all girders is the same P * L = ∑Mp P * L = N * Mp N = # plastic hinges ( ) Mp = P * L / N Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions

  17. - Strong column, weak beam requirement Outline ∑Mpc / ∑Mpb > 1.0 ∑Mpc = ∑ Zc (Fy – Pu/Ag) (column) ∑Mpb = ∑ (1.1 Ry Fy Zb + Muv) (beam) AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse - Moment frame sizes based on virtual work • enclosure breadth typical gravity beam = W18x35typical interior girder = W21x83typical exterior girder = W21x57, W21x62base interior column = W14x233base exterior column = W14x233, W14x159base atrium column = W14x233 • conclusions

  18. - RAM elastic design and analysis - Considers same loading as virtual work Outline 2.0 [(0.9 or 1.2)D + (0.5L or 0.2S)] + 0.2W for immediately affected bays AE Senior Thesis (0.9 or 1.2)D + (0.5L or 0.2S) + 0.2W for all other bays (Figure 16, 17) Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions Critical Loading

  19. - “Blasting-out” a column in RAM = a very small pipe Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign - Steel moment frame sizes • progressive collapse typical gravity beam = W18x35typical interior girder = W21x122typical exterior girder = W21x83, W21x73base interior column = W12x190base exterior column = W12x170base atrium column = W14x176 • enclosure breadth • conclusions RAM Failed ½” STD Pipe (red)

  20. Structure designed to minimize injuries to the • occupants, not the building itself Outline AE Senior Thesis Final Presentation • Following the same thinking, other building • systems should also be considered April 13, 2009 - building information • structural depth • ASTM F 2248-03 • steel redesign • Provides procedure to determine equivalent • 3-second blast pressure • progressive collapse • enclosure breadth • ASTM E 1300-04 • conclusions • Provides procedure to determine glass load resistance • Both lites laminated, no “sacrificial lite”

  21. Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign • Equivalent blast pressure requires charge size • in TNT lb and a standoff distance • progressive collapse • enclosure breadth • conclusions

  22. Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • Various charts for thicknesses and glass type • Enter chart with opening dimensions • enclosure breadth • Final designs: • conclusions - Atrium = (2) 3/16” heat strengthened, laminated insulating glass unit - Office = (2) 1/4” heat strengthened, laminated insulating glass units

  23. Thermal resistance determined by comparing the • conductance values of IGU components Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign Curtain Wall Conductance • progressive collapse • Heat change considered for summer and winter conditions • enclosure breadth Summer Winter Tout = 35 ⁰C Tout = -9.4 ⁰C Tin = 23.9 ⁰C Tin = 21.1 ⁰C • conclusions Curtain Wall Summer Conditions

  24. Considering standard loading only, the alternate • steel moment frame system provides an efficient option Outline AE Senior Thesis Final Presentation • At this point, the only progressive collapse design which • can be safely recommended is the RAM elastic design. April 13, 2009 - building information • structural depth • However, this method is extremely conservative and is an inefficient design. As a result, I recommend the • current concrete system or more plastic analysis of the • proposed steel system. • steel redesign • progressive collapse • enclosure breadth • conclusions • For increased occupant safety, I recommend the employment of the laminated blast safety glass

  25. Outline AE Senior Thesis • MAE Discussion Final Presentation AE 597a - use of RAM Structural System - virtual work for girder estimation AE 534 - discussion of progressive collapse - discussion of blast resistant glassAE 534 - design of blast resistant glass - heat transfer analysis April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions

  26. Acknowledgements I would like to thank the following firms, professionals, professors, and individuals for their support throughout the year with this thesis: RTKL Associates Inc. Mr. Peter Malmquist Prof. M. Kevin ParfittProf. Robert HollandDr. Louis GeschwinderAll AE structural faculty Thank you to all of my AE friends who were always willing to help and answer questions, and kept me laughing through the process. To my roommates, thank you for being patient with me throughout the entire year. And to my family, thank you so much for always being there to support me. Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign • progressive collapse • enclosure breadth • conclusions

  27. Outline AE Senior Thesis Final Presentation April 13, 2009 - building information • structural depth • steel redesign ? Questions ? • progressive collapse • enclosure breadth • conclusions

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