2. Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024

3. History Renovation of an existing building Originally constructed in 1976 Formerly occupied by the Department of Transportation Operated and leased by David Nassif Associates Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024

4. Location Located a few blocks south of the National Mall and the United State Capital Between 6 th and 7 th Street and D and E Street in SW DC Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Location

5. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Size: 1,500,000SF base building and 6,000SF parking garage Number of Stories: Three-level underground parking garage, 10 stories, plus a Pent House Cost: $246 Million GMP Construction Dates: July 2007 – November 2009 Security Rating: Level IV LEED Rating: Gold Project Project Team Owner David Nassif Associates General Contractor James G. Davis Construction Corp. Owners Representative Kramer Consulting Architect/MEP Engineer SmithGroup, Inc. Civil Engineer Wiles Mensch Corp. Structural Engineer SK&A Subcontractors Not Listed Abatement Subcontractor Aceco, Inc. Lump Sum GMP Unit Rate Lump Sum

6. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 4 separate, but integrated quadrants – Elevator – Stairways – Restrooms – Electrical and Communication Closets One acre courtyard that is a private, secure green space – Fountain, seating areas, sculpture, and 32 Honey Locus Shad Trees that are 11’-5” tall Built-up roofing system and metal panels used to conceal the MEP equipment on the Pent House level Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Architecture Overview

7. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Chilled Beams Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Finned chilled water heat exchanger utilizing cooling coils Active chilled beams – About 7,000 units

8. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Chilled Beams Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Limited ceiling plenum Goal: – 8’-4” ceiling height – Leaves 2’-0” to work with, including 1’-0” waffle slab TROX customized systems to only be 7.5” high and 2’ wide by 8’ long.

9. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Energy Usage Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Savings Energy Cost Comparison

10. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Multi-Service Beams Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Services built into them for “just-in-time” arrival – Lighting fixtures and control circuits Direct and/or indirect – Public address speakers – Occupancy sensors – Fire and smoke sensors and alarms – Passive infra-red detectors – Acoustic insulation – Sprinklers – Fresh air supply – Cooling and heating

11. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Advantages Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Shorter construction periods Clear reduction of interfaces Less maintenance and operating costs Energy savings Maximum flexibility of configuration and technology Customized exterior frames

12. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Cost Comparison Active Chilled Beams – About 20 minutes to install one unit Multi-Service Chilled Beams – About 25 minutes to install one unit Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Active Chilled Beams – $150/LF to $200/LF Multi-Service Chilled Beams – $350/LF to $500/LF Schedule Comparison

13. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Commissioning ComIT Program used to track deficiency items, post information such as schedules, submittals, and start-up forms Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements LEED Gold rating – Energy & Atmosphere LEED points Four phases: – Phase 1 - Hot Water System – Phase 2 - CHW/CW & North AHU system – Phase 3 - SW AHU System, Fuel Oil System, Emergency Power System, and Power Monitoring System – Phase 4 - SE AHU System, FA System, BMS System, and conclude with Endurance Period Commissioning

14. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Commissioning Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Interview of several industry members: – “Identify the commissioning needs and program requirements early in the design stage so all team members can understand and set their strategies to meet the project goals” – “Make sure all parties know what is required for commissioning as soon in the project as possible (Communications is key)”

15. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Outcome Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Multi-service chilled beams should be chosen over active chilled beams To make commissioning easier, it is recommended that a full time staff member ensure that the requirements are met

16. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Overview of Parking Garage Recommendations of the engineers “Sounding” Test – Listening to the tones of the reverberations caused by dragging heavy chains over the concrete – Bad concrete made a hollow sound Overhead Test – Hammer or pole used Manual Inspection Test – Exposed and/or corroded rebar – Visual spalled sections. Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements 3 levels totally 6,000 SF Parking Garage used for construction parking, subcontractor offices, and material storage Updating sections of the waffle slab – Area of repair would be completely sectioned off – Poly-walls were used to contain the dust – Respirators were required – Shoring had to remain in place until the concrete was at 100% strength Current Renovation Steps

17. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Two-Way Reinforced Concrete Slabs Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Frame Total Width (ft) CS (ft) MS (ft) Total - Moment CS (-M)MS (-M) Total + Moment CS (+M) MS (+M) A3015 -565.33-424.00-141.33419.96251.98167.98 B157.5 -104.99 0.00 209.98125.9983.99 -282.67-212.00-70.67 C3015 -565.33-424.00-141.33419.96251.98167.98 D157.5 -104.99 0.00 209.98125.9983.99 -282.67-212.00-70.67 Given Information l 1 (ft)30w SDL (psf)15 l 2 (ft)30w DL (psf)150 t slab (in)12w LL (psf)50 γ c (pcf)150wu (psf)278 f' c (psi)4000φ bar (in)1 f y (psi)60000A bar (in 2 )0.79 Column Size (in) l 2, l 1 26w SDL (psf)15 26w DL (psf)150 AAB CS MS D C C CS C A MS

18. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Two-Way Reinforced Concrete Slab For Frame B & D Design Reinforcement For CS (Will Use #8 Bars) ItemDescriptionSpan M-M- M+M+ M-M- 1M u (ft-Kip)-104.99125.99-212.00 2b (in)154.00 3d( in)9.50 4M n = M u /0.9 (ft-Kip)-116.66139.99-235.56 5R = M n /bd 2 100.72120.87203.38 6ρ [Table A.5a]0.00 7Ast = ρbd (in 2 )2.493.005.10 8A st,min = 0.002bt3.70 9N = #7 or #8 (Greater)/A bar 4.68 10Nmin = width strip /2t3.75 Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements For Frame A Design Reinforcement For CS (Will Use #8 Bars) ItemDescriptionSpan M-M- M+M+ M-M- 1M u (ft-Kip)-424.00251.98 2b (in)154.00 3d( in)11.50 4M n = M u /0.9 (ft-Kip)-471.11279.97 5R = M n /bd 2 277.58164.96 6ρ [Table A.5a]0.00 7Ast = ρbd (in 2 )8.434.96 8A st,min = 0.002bt3.70 9N = #7 or #8 (Greater)/A bar 10.676.28 10Nmin = width strip /2t7.50 For Frame C Design Reinforcement For CS (Will Use #8 Bars) ItemDescriptionSpan M-M- M+M+ M-M- 1M u (ft-Kip)-424.00251.98 2b (in)154.00 3d( in)9.50 4M n = M u /0.9 (ft-Kip)-471.11279.97 5R = M n /bd 2 406.76241.73 6ρ [Table A.5a]0.010.00 7Ast = ρbd (in 2 )10.606.11 8A st,min = 0.002bt3.70 9N = #7 or #8 (Greater)/A bar 13.427.73 10Nmin = width strip /2t7.50 Design Reinforcement for CS Design Reinforcement for MS Frame A11Frame A8 Frame B5 5 Frame C14Frame C8 Frame D5 5

19. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Two-Way Reinforced Concrete Slab QuantityUnitExtended Total Extended Total O & P Structural Concrete, Ready Mix, Normal Weight, 4,000psi 22,500CY$1,040,875$3,356,500 Reinforcing steel, in place, elevated slab, #8 74Ton$107,418.4$136,207.36 Reinforcing steel, in place, Slab on Grade, #8 37Ton$54,063.29$70,008.44 Total$3,202,356.69$3,562,765.80 Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements

20. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Current Schedule QuantityUnit Daily Output Total (Days) Structural Concrete, Ready Mix, Normal Weight, 4,000psi, elevated slab, pumped 15,000CY18084 Structural Concrete, Ready Mix, Normal Weight, 4,000psi, slab on grade, pumped 7,500CY18541 Reinforcing steel, in place, elevated slab, #8 74Ton2.3033 Reinforcing steel, in place, Slab on Grade, #8 37Ton2.9013 Total171 Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Two-Way Slab Schedule QuadrantTime Frame NortheastNovember 2007 – February 2008 SoutheastFebruary 2008 – May 2008 SouthwestMay 2008 – August 2008 NorthwestAugust 2008 – November 2008

21. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Outcome Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Current renovation technique for the parking garage waffle slab is more efficient than replacing it with a two- way reinforced concrete system

22. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Overview of Curtain Wall Nearly 5,000 curtain wall panels Both Streetside and Courtyard sides Storefront Panels – 5’ by 12’ by 13’ – 1,100 to 1,300 pounds each Levels 2 to 7 Panels – 5’ by 23’ – 2,300 to 2,500 pounds Levels 8 to 10 – 5’ by 10’ – 500 to 600 pounds. Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Overview of Curtain Wall 1 4 3 5 6 7 4 3 1 2 3 4 5 6 8 7 9 10 6. Vision Glass 7. Spandrel Glass 8. Metal Panel 9. Vision Glass 10.Spandrel Glass 1.Precast Concrete Panels 2.Metal Panels & Louvers 3.Vision Glass 4.Spandrel Glass 5.Vertical Aluminum Mullion Courtyard Streetside

23. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Equipment Used Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Streetside Panels – Crane for Levels 2 to 8 Courtyard Panels – Monorail system Estimated Crew Sizes LocationLevelCrew SizeEquipment Streetside2 – 86Crane Streetside9 – 104Crane Courtyard2 – 106*Monorail Storefront14 – 6Multiple Types * 4 people used for the monorail installation, and two would follow behind for the sealants and/or boot LocationLevelSpanDeliveries Crew Size Streetside2 – 82124 Courtyard2 – 10118-244

24. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Actual Total Crew Size Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements

25. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Estimated Installation Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Streetside Panels – Between 20 to 30 Courtyard Panels – Between 35 to 40 Actual Installation

26. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Productivity Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements

27. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Estimated Schedule TaskStartFinish Exterior Façade1/29/2008 North3/31/200810/8/2008 East4/14/200812/2/2008 West8/12/200812/3/2008 South1/29/20082/6/2009 Storefront North12/9/20081/3/2009 Storefront East1/5/20091/14/2009 Storefront West2/9/20093/16/2009 Storefront South3/6/2009 Courtyard Façade5/30/2008 North7/14/200810/3/2008 East5/30/20088/29/2008 West9/22/200811/26/2008 South10/13/200812/12/2008 Courtyard North12/4/20083/12/2009 Courtyard East2/18/20092/23/2009 Courtyard West1/3/20092/16/2009 Courtyard South2/16/2009 Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Actual Schedule TaskDurationStartFinish Exterior Façade36610/1/20072/23/2009 North32810/1/200712/31/2008 Fabrications for Slab Extensions3210/1/200711/13/2007 Demo & Shoring 2nd Floor at Blast Beams1011/6/200711/19/2007 Slab Extensions112/17/2007 Encase Perimeter Columns at Blast Beams112/5/2007 F,R&P Blast Beams11/18/2008 Fab Anchors & Plates for Curtain wall11/21/2008 Install Anchors & Plates for Curtain wall13/12/2008 Erect Curtain wall912/22/20086/27/2008 Erect Metal Panels207/28/20088/22/2008 Erect Exterior Storefront1711/12/200812/4/2008 Erect Exterior Stone1712/9/200812/31/2008 East31110/1/200712/8/2008 West2661/22/20081/27/2009 South2722/8/20082/23/2009 Courtyard Façade3321/22/20084/29/2009 North2321/22/200812/10/2008 Fab Anchors & Plates for Ctyd Curtain wall251/22/20082/25/2008 Install Anchors & Plates for Curtain wall214/11/20085/9/2008 Erect Structural Steel & Deck165/12/20086/2/2008 Erect Curtain wall268/26/20089/30/2008 Erect Metal Panels110/13/2008 Erect Storefront1211/25/200812/10/2008 East2072/8/200811/24/2008 West1635/12/200812/24/2008 South2475/20/20084/29/2009

28. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Factors for Delays Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Weather Trade Coordination Deficient Frames

29. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Outcome Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Curtain wall productivity was slightly under the estimated productivity

30. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Summary Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Chilled Beams & Commissioning – Multi-service chilled beams – Communication is key for commissioning Parking Garage Waffle Slab – Current renovation technique over a two- way reinforced concrete system Curtain Wall Installation – Slightly under productivity

31. Presentation Outline Natalie Bryner Constitution Center Construction Management Option 400 7th Street SE, Washington, DC 20024 Questions James G. Davis Construction Corporation Bill Bundens Brad Cordek Jonathan Dougherty Ihsan Gin Dan Gowin Ted Holt Frank Lefler Bill Moyer Yolanda Nelson James Pacala Nestor Santos T.J. Sterba Meghan Ulrich Pierce Associates Dan Donaghy Trox USA, Inc. Suzanne Chupp Chris Lawrence Enclos Corp. Paul Sullivan David Nassif Associates Timothy Jaroch Concrete Restoration Services (CRS) Tod Krauss SmithGroup, Inc. Melissa Brown David Varner PACE Industry Members Fellow Architectural Engineering Students Joe Wilcher (Structural) The Pennsylvania State University Chimay Anumba Robert Holland Kevin Parfitt Project Overview Chilled Beams & Commissioning – Mechanical Breadth Parking Garage Waffle Slab – Structural Breadth Curtain Wall Installation – MAE Graduate Level Component Summary Questions and Acknowledgements Acknowledgements