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THE GEORGE WASHINGTON UNIVERSITY

THE GEORGE WASHINGTON UNIVERSITY. THE E LLIOTT S CHOOL. OF INTERNATIONAL AFFAIRS. PRESENTATION OUTLINE Introduction Project Overview Site Planning Analysis Curtain Wall Redesign Mechanical Acoustical Construction Research Conclusions. PRESENTATION OUTLINE Introduction

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THE GEORGE WASHINGTON UNIVERSITY

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  1. THE GEORGE WASHINGTON UNIVERSITY THE ELLIOTT SCHOOL OF INTERNATIONAL AFFAIRS

  2. PRESENTATION OUTLINE • Introduction • Project Overview • Site Planning Analysis • Curtain Wall Redesign • Mechanical • Acoustical • Construction • Research • Conclusions

  3. PRESENTATION OUTLINE • Introduction • Project Overview • Site Planning Analysis • Curtain Wall Redesign • Mechanical • Acoustical • Construction • Research • Conclusions

  4. PROJECT OVERVIEW LOCATION

  5. THE GEORGE WASHINGTON UNIVERSITY THE ELLIOTT SCHOOL OF INTERNATIONAL AFFAIRS • ACADEMIC COMPONENT • 8 Floors • Classroom, Auditorium, and Office Spaces • RESIDENTIAL COMPONENT • One, Two, and Three Bedroom Suites • 11 Floors • PARKING GARAGE • 3 Underground Levels • Approximately 200 Vehicles

  6. PROJECT TEAM • OWNER • ARCHITECT/HVAC ENGINEER • CIVIL ENGINEER • STRUCTURAL ENGINEER • ACOUSTICAL CONSULTANT • CONSTRUCTION MANAGER

  7. PROJECT OVERVIEW • PROJECT SIZE • 330,000 SF • PROJECT COST • $48 Million • PROJECT SCHEDULE • Total Construction Schedule: 30 months • Ground Breaking: October 2000 • Residential Completion: August 2002 • Academic Completion: April 2003

  8. PRESENTATION OUTLINE • Introduction • Project Overview • Site Planning Analysis • Curtain Wall Redesign • Mechanical • Acoustical • Construction • Research • Conclusions

  9. SITE PLANNING ANALYSIS • PURPOSE • Improve the Convenience, Coordination, and Safety of the Construction Project • STRATEGY • Replace the Construction Manager’s Temporary Site Office with Two Mobile Trailers and Relocate These Within the Structure

  10. SITE PLANNING ANALYSIS • COST COMPARISON • Existing Temporary Offices – RS Means • Proposed Trailers – GE Capital Modular $ 44, 009

  11. SITE PLANNING CONCLUSIONS • EFFICIENCY AND COORDINATION • Allows for Nextel Service in the CM Office • CONVENIENCE • Proximity to Site Entrance • SAFETY • Amongst More Construction Activities • Ability to Monitor Site Entrance and Material Lift • COST • $44,000 in Savings to the General Conditions

  12. PRESENTATION OUTLINE • Introduction • Project Overview • Site Planning Analysis • Curtain Wall Redesign • Mechanical • Acoustical • Construction • Research • Conclusions

  13. CURTAIN WALL OVERVIEW • PURPOSE • Reduce the Installation Schedule • Minimize the Risk Associated with Stick-Systems • Improve Building Environment • Maximize Energy Efficiency • Maintain the Intent of the Original Design • STRATEGY • Dual-Layered Curtain Wall System Apply a Unitized

  14. EXISTING CURTAIN WALL • SYSTEM • 9, 500 SF Standard DGU Curtain Wall System • INSTALLATION • Stick-Built • COST • $1.0 Million • SCHEDULE • 24 Weeks to Install

  15. PROPOSED CURTAIN WALL • SYSTEM • Double-Skin Active WallTM Manufactured by Permasteelisa Cladding Technologies, Ltd. • INSTALLATION • Prefabricated Unit System • COST • Approximately $1.4 Million • SCHEDULE • 20 Weeks to Install

  16. PROPOSED CURTAIN WALL MECHANICAL COMPONENTS AND SYSTEM OPERATION

  17. CURTAIN WALL PERFORMANCE • THERMAL INSULATING PROPERTIES • U-Value Dramatically Reduced • Return Air Cavity and U-Value Allow Interior Surface to be Maintained Within 2˚F of the Room Air • ACOUSTICAL INSULATING PROPERTIES • STC Rating is Greatly Improved • Sits Along Four Lanes of Traffic Congested E Street

  18. CURTAIN WALL PERFORMANCE • MECHANICAL SYSTEM REDUCTIONS • Thermal Insulation Allows for Nearly 100 Existing Fin Tube Radiators to be Eliminated • 724.5 MBH Reduction • Elimination of Fin Tube Radiators Allows for Reduction in Gas Fired Boiler • 2000 MBH  1200 MBH • Mechanical Blinds Replace Existing Shades • MECHANICAL COST REDUCTIONS • Decrease Associated Mechanical Cost by $100,000

  19. CURTAIN WALL PERFORMANCE • ORIGINAL DESIGN INTENT • Components are Custom Manufactured – Materials and Sizes – in Conjunction With Architectural Design • - Architectural Aesthetics Upheld • - Daylighting Levels Unchanged • Air Cavity Added Within the Existing Framing System in Area Occupied by Existing Radiators • - Square Footages Maintained

  20. CURTAIN WALL CONSTRUCTION • PROJECT DELIVERY • Complex System Requires Complete Integration of Building Systems as well as the Project Team • Earlier Involvement of the Construction Manager • Subsequent Involvement of Façade Engineer/Supplier, Through Detailed Performance Specification

  21. CURTAIN WALL CONSTRUCTION PROJECT DELIVERY EXISTING 6 MONTHS 8 MONTHS PROPOSED

  22. CURTAIN WALL CONSTRUCTION • CONSTRUCTION SCHEDULE • Unit System Reduces Required Installation Time EXISTING PROPOSED 4 WEEKS

  23. CURTAIN WALL CONSTRUCTION • SYSTEM COST ANALYSIS • Added Initial Cost • Offset Slightly by Mechanical System Reductions • Performance and Efficiency  Long-Term Payback $ 283, 364

  24. CURTAIN WALL CONCLUSIONS • MECHANICAL AND ACOUSTICS • Improved Environment at Building Perimeter • Mechanical System Reductions • PROJECT DELIVERY • Increased Involvement and Integration • CONSTRUCTION SCHEDULE • Installation Reduced by 4 Weeks • SYSTEM COST ANALYSIS • Added Premium • Long-Term Payback Period Appropriate

  25. PRESENTATION OUTLINE • Introduction • Project Overview • Site Planning Analysis • Curtain Wall Redesign • Mechanical • Acoustical • Construction • Research • Conclusions

  26. RESEARCH OVERVIEW • PURPOSE • Investigate the Emerging Technology of Dual-Layered Glass Facades • Applicable Projects • Delivery Method • Installation • Cost and Value • STRATEGY • Case Studies • Internet, Journal, and Periodical References

  27. RESEARCH METHODOLOGY CASE STUDIES • Levine Hall – The University of Pennsylvania • Justice Center – Seattle, Washington • Manulife Building – Boston, Massachusetts

  28. RESEARCH RESULTS • APPLICABLE PROJECTS • Designs Requiring All-Glass Facades • Sustainable Design and Construction – LEED • DELIVERY METHOD • Design-Build  Complete Project Integration • INSTALLATION • Prefabricated Unit Components • COST AND VALUE • Added Initial Cost • Long-Term Pay-Back Period

  29. PRESENTATION OUTLINE • Introduction • Project Overview • Site Planning Analysis • Curtain Wall Redesign • Mechanical • Acoustical • Construction • Research • Conclusions

  30. CONCLUSIONS • SITE PLANNING • More Convenient • Allows Better Coordination Between CM and Trades • Improves the Safety Monitoring Capabilities • $44,000 in General Conditions Savings

  31. CONCLUSIONS • CURTAIN WALL REDESIGN • Improved Environment – Thermally and Acoustically • Maintains Original Architectural Design Intent • Requires Increased Project Integration • Reduces Installation Schedule by 4 Weeks • Added Initial Cost  Recouped Through Energy Savings

  32. CONCLUSIONS • RESEARCH • Viable Option for Improved Envelope Performance • - Design/Build Projects • - Initial Cost Not the Primary Concern • Unit Installation  Decreased Installation Time • More Appropriate As Energy Costs Increase and Familiarity is Gained with Design and Construction

  33. ACKNOWLEDGEMENTS THE PENNSYLVANIA STATE UNIVERSITY DEPARTMENT OF ARCHITECTURAL ENGINEERING Jonathan Dougherty Moses Ling Dr. John Messner Dr. David Riley Dr. Michael Horman THE GEORGE WASHINGTON UNIVERSITY Dave Wellman Art Bean THE RIDGEVIEW GLASS COMPANY Dave Allerdings PERMASTEELISA CLADDING TECHNOLOGIES, LTD. THE GILBANE BUILDING COMPANY Ben Alexander Corey Sarver Derek Meyer Larry Hardesty Wayne Bishop Bill Cross Bill DeStefano Andy Faber Dwight MacGee MY FAMILY THE REST OF THE 2003 AE THESIS CLASS Kate Jennings Joe DiIenno Chris Champagne All the CM’s 242 South Atherton

  34. QUESTIONS ?

  35. MECHANICAL SYSTEM REDUCTIONS • Fin Tube Radiator Specifications • 2070 BTU/Hr/Ft • 7.48 GPM • 3.5’ Length • Gas Fired Boiler Specifications • 2000 MBH Input • 86% Combustion Efficiency • 2070 BTU/Hr/Ft x 3.5’ = 7245 BTU/Hr = 7.245 MBH/Radiator • 7.245 MBH/Radiator x 98 Radiators = 724.5 MBH Reduction • 2000 MBH x 86% = 1720 MBH Maximum Output • 1720 MBH – 724.5 MBH = 995.5 MBH • 995.5 MBH / 86% = 1157.6 MBH  1200 MBH Boiler

  36. MECHANICAL SYSTEM SAVINGS • 1999 RS Means Building Construction Cost Data • 1960 MBH Gas Fired Boiler: $26,700 • 1200 MBH Gas Fired Boiler: $18,100 • Washington, DC City Cost Index (Mechanical): 95.9 • 2000 Historical Cost Index: 119.6 • 1999 Historical Cost Index: 117.6 • $26,700 - $18,100 = $8600 • $8600 x .959 x 119.6/117.6 = $8387.66 Total Adjusted Savings

  37. MECHANICAL SYSTEM SAVINGS

  38. PROPOSED EXISTING

  39. SITE PLANNING ANALYSIS

  40. SITE PLANNING ANALYSIS

  41. CURTAIN WALL – HEATING LOAD PRECAST WALL – U-VALUE EXISTING ENVELOPE LOAD – HEATING PROPOSED ENVELOPE LOAD - HEATING

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