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The National Air and Space Museum STEVEN F. UDVAR-HAZY CENTER

Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia. The National Air and Space Museum STEVEN F. UDVAR-HAZY CENTER. Improving Safety and Sustainability Craig Dubler Construction Management Senior Thesis Presentation.

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The National Air and Space Museum STEVEN F. UDVAR-HAZY CENTER

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  1. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia The National Air and Space MuseumSTEVEN F. UDVAR-HAZY CENTER Improving Safety and Sustainability Craig Dubler Construction Management Senior Thesis Presentation

  2. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Presentation Outline • Project Overview • Analysis I: Steel Sequencing • Analysis II: Simulated Safety Plan • Analysis III: Sustainable Redesign • Conclusions

  3. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Presentation Outline • Project Overview • Analysis I: Steel Sequencing • Analysis II: Simulated Safety Plan • Analysis III: Sustainable Redesign • Conclusions

  4. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Project Overview • Function: Display and preservation of Smithsonian’s collection of historic aviation and space artifacts • Size: 470,000 S.F. • Cost: $125,000,000 • Delivery Method: Design-Bid-Build • Duration: 30 months

  5. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Project Overview Architectural features: • Main Exhibition Hangar • Public Amenities • Observation Tower • Space Hangar Space Hangar Main Exhibition Hangar Public Amenities IMAX Observation Tower

  6. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Project Overview • Main Exhibition Hangar • Arched tri-truss design • Hanging mezzanine walkways • Counter-weighted exhibit doors • Rubber membrane roof

  7. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Project Overview • Public Amenities including IMAX Theater • Consists of class rooms, restaurants and retail shop • Exterior: • Curved glazing • Metal panels • Metallic ceramic tiles

  8. Structural System Main Hangar Arched tri-truss steel system that ties into cast-in-place thrust blocks Drilled caisson foundation Public Amenities & IMAX Theater Steel skeleton with slab on metal deck Spread footing foundation Observation Tower Steel system encased in concrete Mat footing foundation Project Overview Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia

  9. Facts 6500 tons of steel 40,000 cubic yards of concrete 30,000 cubic yards of excavation 800,000 sq. feet of roofing 64,000 linear feet (12 miles) of Walker duct Project Overview Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia

  10. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Presentation Outline • Project Overview • Analysis I: Steel Sequencing • Analysis II: Simulated Safety Plan • Analysis III: Sustainable Redesign • Conclusions

  11. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Steel Sequencing • Main Hangar Steel • 15 percent of total construction cost • Erection process complex and unsafe • Steel fabricated in Montreal, Quebec • Total erection time around six months Extra planning required!

  12. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Steel Sequencing Proposed solution: • 4D Model of Steel Sequencing • Show steel erection including cranes

  13. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Steel Sequencing

  14. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Steel Sequencing Existing Plan: 2D Proposed Plan: 4D

  15. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Steel Sequencing Advantages of 4D Steel Sequencing • Allows Smithsonian to easily understand erection process • Subcontractors aware of where and when steel erection takes place • Steel erectors develop milestones • Ask question about erection feasibility

  16. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Presentation Outline • Project Overview • Analysis I: Steel Sequencing • Analysis II: Simulated Safety Plan • Analysis III: Sustainable Redesign • Conclusions

  17. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Simulated Safety Plan Jobsite safety extremely important • Complex size and shape of building • Dangerous activities (e.g. Steel erection) • Contractor Controlled Insurance Plan (CCIP) • Half of workforce is Hispanic, and understands little English

  18. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Simulated Safety Plan • Hispanic Workforce • Creates a communication barrier • Increases site safety hazards • Lowers productivity • Creates conflicts between managers and workers • Workers killed has more than doubled in last five years

  19. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Simulated Safety Plan 4-D Safety Plan • Safety Plan Model • Shows where and when activities take place • Safety Plan Legend • Shows hazards associated with each activity • Worker and Bystanders • Specific Job Hazard Analysis • Describes hazards in more detail

  20. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Simulated Safety Plan Steel Erection Roofing Fire Protection Mechanical Glazing Painting Electrical Metal Studs Concrete

  21. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Simulated Safety Plan Sample Hazard Analysis (Northwest side of Hangar) 04-08-2002 Mechanical • Fire Protection Contractor • Falling • Welding • Cutting Metal • Heavy lifting • Struck by objects • Also… • Roofing (struck by objects) • Steel (welding, struck by • objects) • Mechanical (cutting metal) Fire Protection Roofing Steel Erection

  22. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Simulated Safety Plan Feasibility of 4-D Safety Plan • Preconstruction Meetings • Jobsite Orientation • Weekly Safety Meetings (Toolbox Talks)

  23. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Simulated Safety Plan Key factors for Implementation • Develop in early stage of project • Be sure model is understood by all workers • Model is useless if workers are not trained to notice hazards

  24. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Presentation Outline • Project Overview • Analysis I: Steel Sequencing • Analysis II: Simulated Safety Plan • Analysis III: Sustainable Redesign • Conclusions

  25. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Sustainable Redesign Mechanical System Redesign • Lower energy cost in Public Amenities area Site Redesign • Improved water retention system

  26. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Mechanical System Redesign Existing AHU A-07 Exhaust Second Reheat Coil Reheat Coil Supply Fan Filters Cooling Coil Return Air Outdoor Air Mixed Air Supply Air

  27. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Mechanical System Redesign Proposed AHU A-07 Exhaust Second Reheat Coil Reheat Coil Supply Fan Filters Cooling Coil Return Air Outdoor Air Mixed Air Supply Air Enthalpy Wheel

  28. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Mechanical System Redesign Advantages of Enthalpy Wheel • Lower energy costs • Save around $8,000 per year • Increased indoor air quality (IAQ) • Low maintenance • Long life expectancy

  29. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Site Redesign Existing Site Water Retention System Main Hangar Water Retention Ponds Water Retention Pond Public Amenities Bituminous Pavement Bituminous Pavement

  30. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Site Redesign Proposed Site Water Retention System Main Hangar Water Retention Ponds Public Amenities Porous Pavement Porous Pavement Overflow (.5%)

  31. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Site Redesign Advantages of Porous Pavement • Elimination of large water retention pond • Save approximately $130,000 • Space available for future expansion • Natural rain-water filtration (pollutant removal) • Increased skid resistance

  32. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Sustainable Redesign Summary * Including energy saving of $8,000 per year ** Including maintenance cost of $3,000 per year

  33. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Presentation Outline • Project Overview • Analysis I: Steel Sequencing • Analysis II: Simulated Safety Plan • Analysis III: Sustainable Redesign • Conclusions

  34. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Conclusions • 4D Steel Sequencing • Simplifies erection process • Simulated Safety Plan • Elimination of careless accidents only if understood by every worker onsite • Sustainable Redesign • Lower energy costs and increased IAQ • Natural rain-water runoff

  35. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Thanks To…. • Hensel Phelps Construction Company • Mike Mattivi, Chad Mease, John Louge, and Dave Webb • Smithsonian Institution • Lin Ezel • Penn State AE Faculty • Dr. Messner, Dr. Horman, Dr. Riley, and Dr. Ling • Family and Friends • Mom, Dad, Kelly, Amy, Jessica, and Gram…. You are truly my inspiration to succeed.

  36. Questions?

  37. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Enthalpy Wheel How it works • Transfers heat and humidity between the exhaust and supply air • Brings the supply (incoming) air closer in temperature and humidity to the exhaust air • Reduces the load on the heating and cooling systems

  38. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Sizing Enthalpy Wheel Return air flow = 7314 cfm Vmin/Vmax = 0.80 Supply air flow = 9200 cfm Unit effectiveness = 0.825 Using a TE 3-9, the face velocity is 760 FPM, the pressure loss is 0.76 in. wg. Taken from Appendix E

  39. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Enthalpy Wheel - Energy Savings Washington D.C Enthalpy Hrs. Cooling = 9,000 Enthalpy Hrs. Heating= 41,000 Heating and Cooling cost* Cooling = $0.055/kWh Heating = $0.55/therm *gathered from MSN living index Annual Cost savings Cooling costs = $0.1/cfm Heating costs = $1.0/cfm $/kWh Total saved = $1.1/cfm of outdoor air Total OA = 7314 cfm Total Annual Savings =7314 cfm * $1.1/cfm = $8,045 per year Rate of return = $33,000 / $8,045 = 4.1 Years $/therm

  40. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Porous Pavement • Four Layers: • Wearing layer - asphalt with greater than normal percentage of voids • Transition layer - layer between top wearing layer and the stone reservoir • Stone reservoir - thick layer of aggregate (5ft) • Geotextile – keeps soil out of stone reservoir

  41. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Porous Pavement - Construction Subsurface excavated without heavy equipment compacting the bed bottom. Fine grading is done by hand Geotextile is laid. Then clean/washed uniformly graded aggregate is place in the bed as the storage media. Porous pavement asphalt layer is then placed, the same way as regular, on top of the stone reservoir

  42. Craig Dubler Steven F. Udvar-Hazy Center Construction Management Chantilly, Virginia Porous Pavement - Concerns • Heavy equipment not allowed on porous soil • No staging in future porous pavement areas • Compacts soil and greatly lessens permeability • Facilities maintained on a regular basis • Leaf Removal • Vacuum Sweeping • Restricted Snow Removal • Plastic plow blades – does not damage surface • No sand or anti-skid – clogs pores • Vehicle Restrictions • Passenger Cars and Trucks Only • Rutting may occur

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