PRESENTATION OUTLINE

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

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

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PROJECT OVERVIEW LOCATION
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• 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

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PROJECT TEAM

• OWNER
• ARCHITECT/HVAC ENGINEER
• CIVIL ENGINEER
• STRUCTURAL ENGINEER
• ACOUSTICAL CONSULTANT
• CONSTRUCTION MANAGER

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• 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

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

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

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• SITE PLANNING ANALYSIS
• COST COMPARISON
• Existing Temporary Offices RS Means
• Proposed Trailers GE Capital Modular

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• 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

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

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• 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

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

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• 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

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

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• 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

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• 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

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• 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

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CURTAIN WALL CONSTRUCTION PROJECT DELIVERY
EXISTING
6 MONTHS
8 MONTHS
PROPOSED
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• CURTAIN WALL CONSTRUCTION
• CONSTRUCTION SCHEDULE
• Unit System Reduces Required Installation Time

EXISTING
PROPOSED
4 WEEKS
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• CURTAIN WALL CONSTRUCTION
• SYSTEM COST ANALYSIS
• Added Initial Cost
• Offset Slightly by Mechanical System Reductions
• Performance and Efficiency ? Long-Term Payback

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• 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

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

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• 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

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RESEARCH METHODOLOGY CASE STUDIES

• Levine Hall The University of Pennsylvania

• Justice Center Seattle, Washington

• Manulife Building Boston, Massachusetts

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• 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

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

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

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• 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

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• 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

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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 CMs
242 South Atherton
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QUESTIONS ?
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• 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

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• 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

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MECHANICAL SYSTEM SAVINGS
ITEM QTY UNIT TOTAL W/ OP COST INCL OP
Fin Tube, 2-3/4" copper tube, 4-1/4" alum. fin 343 lf 82.08 28,153.44
Copper Piping, 3/4" 900 lf 7.2 6,480.00
Steel Shade Supports 785 lf 42 32,970.00
Mechanically Operated Sun Shades 3780 sf 5.25 19,845.00
Boiler Reduction - - - 8,387.66
      TOTAL 95,836.10
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PROPOSED EXISTING
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SITE PLANNING ANALYSIS
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SITE PLANNING ANALYSIS
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CURTAIN WALL HEATING LOAD PRECAST WALL
U-VALUE EXISTING ENVELOPE LOAD
HEATING PROPOSED ENVELOPE LOAD - HEATING