Integrative Design Working With Your Mep

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The following presentation discusses high-performance buildings today and in the future. Current and future codes are discussed as well as implications to the LEED rating system. The last part of the presentation focuses on the inefficiencies in the design-bid-build process and discusses how high-performance buildings will be the result of integrative design.

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Integrative Design Working With Your Mep

  1. 1. How to work with your MEP Integrative Design
  2. 2. Populous is a Registered Provider with the American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request. This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods and services will be addressed at the conclusion of this presentation.
  3. 3. Copyright Materials This presentation is protected by US and International copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited. Building Momentum Group, LLC 2010
  4. 4. Learning Objectives Sustainable Design Intent & Innovation   Integrated Project Delivery   Building Form   Energy Modeling   Rightsizing Equipment
  5. 5. Presentation Goals • Define High-Performance Buildings • Bridge the Technical Gap Between Architect and Engineer • Demonstrate the Value of Collaboration in" High-Performance Building Design
  6. 6. What is a High-Performance Building? • Perform better than code minimum • Address ALL building characteristics • Site • Water • Energy • Materials • Indoor Environment • Occupant Productivity • Operation • Limit Detrimental Impact
  7. 7. USGBC LEED Rating System
  8. 8. A More Efficient Code Minimum Energy Code Basis Efficiency Gain IECC 2006 ASHRAE Standard 90.1-2004 40% over 1999 IECC 2009 ASHRAE Standard 90.1-2007 30% over 2004* IECC 2012 ASHRAE Standard 90.1-2010 30% over 2007** *Source: NREL **IECC likely to adopt when released • All State Energy Codes Must Be Equivalent To ASHRAE Standard 90.1-2004 By December 30, 2010 (Source: U.S. DOE) • 90.1 Efficiency Increasing With Every Three Years
  9. 9. Graphic adapted from www.energycodes.gov Status of State Energy Codes
  10. 10. Compliance Paths Prescriptive Comply With Mandatory Envelope Requirements IECC 90.1 Comply With Mandatory Mechanical Requirements IECC 90.1 Comply With Mandatory Lighting Requirements IECC 90.1 Document Compliance Plan Review Field Inspection Performance IECC 90.1 Document Compliance Plan Review Field Inspection 1. Energy Cost Budget 2. Appendix G Energy Model
  11. 11. Prescriptive Compliance Excerpt from ASHRAE 90.1-2007 c.i. = Continuous Insulation U= 1 / R
  12. 12. Walls Defined metal building wall: a wall whose structure consists of metal spanning members supported by steel structural members (i.e., does not include spandrel glass or metal panels in curtain wall systems). mass wall: a wall with an HC exceeding (1) 7 Btu/ft2·°F or (2) 5 Btu/ft2·°F, provided that the wall has a material unit weight not greater than 120 lb/ft3. steel-framed wall: a wall with a cavity (insulated or otherwise) whose exterior surfaces are separated by steel framing members (i.e., typical steel stud walls and curtain wall systems). wood-framed and other walls: all other wall types, including wood stud walls.
  13. 13. Typical Steel-Frame Wall
  14. 14. Prescriptive Compliance Excerpt from ASHRAE 90.1-2007 “Assembly”
  15. 15. Fenestration Assemblies • Assembly is a weighted factor between • Center of Glass • Edge of Glass • Frame • Typical glass manufacturers list “center of glass” only • With Curtain Wall manufacturers • Request calculated assembly U-Values • Request calculated assembly SHGC • Request calculated/test infiltration rate • Engineer requires “assembly u-value” for load & energy models • Engineer can calculate these values
  16. 16. Increasing Efficiency 90.1-2004 90.1-2007 % Change Roofs (Ins. Above Deck) U: 0.063 R-15ci U: 0.048 R-20ci ~24% Walls Above Grade (Steel-Framed) U: 0.124 R-13 U: 0.062 R-13+R-7.5ci ~50% Vertical Glazing (Percent Glass) Max. 50% of Wall Max. 40% of Wall ~20% 40% Vertical Glazing (Assembly Max. U) Ufixed: 0.57 Uoper: 0.67 Unonmetal frame: 0.40 Umetal frame: 0.50 (curtainwall) Umetal frame: 0.85 (entrance door) Umetal frame: 0.55 (other) ~12 to 30% 40% Vertical Glazing (Assembly Max. SHGC) SHGCall: 0.39 SHGCnorth: 0.49 SHGCall: 0.40 varies Zone 4A Envelope Changes
  17. 17. Compliance Paths Prescriptive Comply With Mandatory Envelope Requirements IECC 90.1 Comply With Mandatory Mechanical Requirements IECC 90.1 Comply With Mandatory Lighting Requirements IECC 90.1 Document Compliance Plan Review Field Inspection Performance IECC 90.1 Document Compliance Plan Review Field Inspection 1. Energy Cost Budget 2. Appendix G Energy Model Appendix G For LEED Projects
  18. 18. Percent Glazing Example 0 5000 10000 15000 20000 25000 (10^6BTU/year) Heat Rejection Pumps Cooling Heating - Gas Heating Electric Fans Lights Receptacles Base Utilities Baseline: 40% Glass (U=0.57, SC=0.45) % above baseline Run 1: 50% Glass (U=0.57, SC=0.45) 4.9% Run 2: 60% Glass (U=0.57, SC=0.45) 10.1% Run 3: 70% Glass (U=0.57, SC=0.45) 15.4% Run 4: 50% Glass (U=0.4, SC=0.46) 0.5% Run 5: 60% Glass (U=0.4, SC=0.46) 3.1% Run 6: 70% Glass (U=0.4, SC=0.46) 6.9%
  19. 19. Typical Office Building Energy Consumption Lighting 22% Other 7% Ventilation 7% Space Heating 6% Water Heating 1% Refrigeration 1% Cooking 1% Cooling 29% Office Equipment 26%
  20. 20. LEED EA Prerequisite 2: Minimum Energy Performance LEED System Basis % Better Than 90.1 Version 2.2 ASHRAE Standard 90.1-2004 14% Version 3 ASHRAE Standard 90.1-2007 10% • Proposed Building Energy Cost ($) Must Be Less Than Baseline Model • ~16% Increase In Performance Between Version 2.2 & Version 3
  21. 21. • Advanced Energy Design Guides •  Prescriptive Guide Written For Small Buildings •  Free Download • ASHRAE Standard 189.1 • Created By USGBC & ASHRAE • Formatted Similar To LEED But Written For Code • International Green Construction Code • High-Performance Model Building Code (release date 2012) High-Performance Building Code
  22. 22. Back To The Future • Standard 90.1: Baseline Code • AEDG: Prescriptive High-Performance for Small Buildings • Standard 189.1: High-Performance for Commercial Buildings Graphic adapted from ASHRAE Vision 2020
  23. 23. Conventional Project Delivery Is Delivering Waste • Project Team Members Working In Silos • High-Performance Synergies Lost In-between Trades • High-Performance Lost By “De-Value Engineering” Architect Mechanical Engineer Electrical Engineer Plumbing Engineer
  24. 24. MEP’s Role In The Conventional Design Process Conceptual Design Schematic Design Design Development Construction Documents Bidding Construction MEP is typically engaged during SD phase Most of the MEP work is done during CD’s Ongoing Operations & Maintenance LEED Energy Model
  25. 25. Conceptual Design Schematic Design Design Development Construction Documents Bidding Construction The Integrative Design Process Conceptual Modeling Parametric Modeling • Engages the Design Team In Conceptual Phase • Engage MEP in Conceptual & Schematic Design Ongoing Operations & Maintenance
  26. 26. Energy Modeling Process Conceptual Modeling • Programming/Discovery Phase Parametric Modeling • SD Phase Load Modeling • DD Phase Compliance Modeling • Late in DD or early CD Phase Predictive/Incentive Modeling • CD Phase Measurement & Verification • Post Construction
  27. 27. What is Conceptual Modeling? Optimize Orientation for Daylighting, Wind, Thermal Massing etc. Determine Optimal Site Specific Synergies Between Building Systems Big Picture Comparisons Between Different Building Forms & Orientations
  28. 28. What is Parametric Modeling? Conduct a Life Cycle Value Assessment & Reduce, Reduce, Reduce! Compare Building Systems Options HVAC Lighting Controls Strategies Compare Envelope Options Massing Insulation Fenestration Identify the Most Promising Energy-Reduction Strategies.
  29. 29. Communicate & Collaborate • Charrettes Facilitate Collaboration • Share information early in the design process • Collaboration Eliminates Assumptions
  30. 30. Don’t Assume High-Performance • MEP’s Will Make Conservative “Rule-of-Thumb” Assumptions Unless Provided With Actual Performance Information • MEP’s Will Apply Safety Factors to Those Assumptions • Conservative Assumptions and Safety Factors Lead to Under-Performing and Over-Priced Buildings
  31. 31. Tools for High-Performance Design • Building Information Modeling (BIM) • Good For Coordination • Increases Information Flow • Does Not Reduce Design Time • Requires Integrated Project Delivery To Be Of Real Value • Energy Modeling • Most Valuable When Performed Early • Tool for Making Important Design Decisions • Commissioning • Necessary from Concept to Completion
  32. 32. Integrated Teams Lead To High-Performance Design
  33. 33. Learning Objectives Sustainable Design Intent & Innovation   Integrated Project Delivery: The Future of Construction   Building Form: Conceptual Modeling Crucial   Energy Modeling: A Team Activity   Rightsizing Equipment: Crucial for High-Performance
  34. 34. Resources ASHRAE www.ashrae.org Building EQ www.buildingeq.com Building Momentum Group www.bmgsc.com Energy Codes www.energycodes.gov Engineering for Sustainability www.engineeringforsustainability.org ENERGY STAR www.energystar.gov International Green Construction Cod www.iccsafe.org/cs/IGCC/ Net-Zero Commercial Initiative www.eere.energy.gov/buildings/commercial_initiative/design.html U.S. Department of Energy www.eere.energy.gov/buildings/ USGBC www.usgbc.org
  35. 35. Questions? This concludes the American Institute of Architects Continuing Education Systems Program Chicago . 866.790.2744 . bmgsc.com

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