building envelope commissioning & retro-commissioning · retro-commissioning paul totten, pe,...
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Building Envelope
Commissioning & Retro-
Commissioning
June 13, 2017
2 to 3pm ET
Envelope Tech Team
Meeting
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Building Envelope Tech Team Support
Building Envelope Technology Team
Connecting Better Buildings partners with
advanced building envelope technology solutions
Melissa Lapsa, M.B.A.
Building Envelope Technical Team Lead
Mahabir Bhandari, Ph.D.
Building Envelope Tech Team Support
Simon Pallin, Ph.D.
Building Envelope Technical Lead
Caroline Hazard, M.S.
Technology verification studies
Specification documents
Case studies and fact sheets
Calculators and analytic tools
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What does the Envelope Tech Team do?
Build awareness with
guidance and information on
envelope technology solutions
Conduct envelope technology
verification studies
Offer technical assistance for
envelope projects
Engage and support Members in efforts to
accelerate adoption of building envelope technologies
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Join the Team!
4
• Adams 12
• Allegheny County Community College
• Arlington Initiative to Rethink Energy (AIRE)
• Association for Energy Affordability
• Brevard County School Board
• Clark Atlanta University
• Cook County Bureau of Asset Mgmt
• Department of Commerce
• Emory University
• exp US Services, Inc.
• Green Dinosaur Inc.
• HOK
• Hersha Hospitality Mgmt
• Instituto Superior de Engenharia do Porto
• Legacy Health
• MA Dept of Energy Resources
• Newmark Grubb Knight Frank
• Parkway Schools
• REI Co-op
• SABEY Data Centers
• Schmidt
• SIM2
• Smart Building Strategies LLC
• TN Office of Energy Programs
• US Army Corps of Engineers
• z2zero
Members (includes: Building Owners/Mgrs, Property Managers, A&E, Construction/ Installers)
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Join the Team!
5
• AppleBlossom Energy, Inc.
• Argonne Nat’l Lab
• BA ConsulT
• Birch Point Consulting
• BROAD U.S.A. Inc.
• Building Envelope Materials (BEM)
• Covestro LLC
• Guardian Glass
• ICF
• KUPU
• National Fenestration Rating Council
• NRG Insulated Block
• QuadLock
• Renovate by Berkowitz
• Rmax Operating, LLC
• SOLARIA
• Sustainability Consultants LLC
• UNIFRAX
• USG Corporation
Friends (Includes: Researchers, Academics, Trade Associations, Energy Service
Providers, Manufacturers, Subject Matter Experts)
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Agenda
Introduction - Why Building Enclosure Commissioning?
Simon Pallin, PhD, ORNL
Going Deeper: Building Enclosure Commissioning and Retro-Commissioning
Paul Totten, PE, LEED AP, WSP
Questions and Group Discussion
Identify and prioritize Team Member resource needs
Wrap up and adjourn
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Introduction - Why Commissioning
Holistic Building Envelope Assessment
Installation Quality – Built as Designed
Return of Investment
Optimized Energy Performance
Building Certification – LEED
Users Comfort
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Introduction - Why Commissioning
Holistic Building Envelope Assessment
(I. Samuelson)
J. Straube
• Water Resistive Barrier
• Air Barrier
• Thermal Resistance
• Vapor Barrier
• Light
• Noise
• (Structural
Performance)
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Introduction - Why Commissioning
Holistic Building Envelope Assessment
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Introduction - Why Commissioning
Example – Reduce energy losses through existing building envelope
Concerns - Impact on façade material
Holistic Building Envelope Assessment
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Introduction - Why Commissioning
Holistic Building Envelope Assessment
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Introduction - Why Commissioning
Holistic Building Envelope Assessment
Freezing
>100 freeze/ thaw cycles
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Introduction - Why Commissioning
Installation Quality – Built as Designed
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Introduction - Why Commissioning
Factors that influence airtightness
• Construction design
• Floor area / Volume
• Penetration / Installations
• Material properties
• Workmanship
Field Study - Airtightness of 12 Identical
Buildings
Installation Quality – Built as Designed
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Introduction - Why Commissioning
Installation Quality – Built as Designed
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Introduction - Why Commissioning
Return of Investment
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Introduction - Why Commissioning
Return of Investment
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Today’s Speaker
Paul Totten, PE, LEED AP
Vice President
Building Enclosures
YEARS EXPERIENCE
20
AREAS OF PRACTICE
Enclosure Design and Consulting
Enclosure Commissioning
Building Science
Email:
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DOE/ORNL
June 9, 2017
Building Enclosure Commissioning under LEED v4 and Retrocommissioning Paul Totten, PE, LEED AP
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20
Presentation Outline
• Enclosure commissioning process
• Retro-commissioning
• Project Examples
• Questions
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Building Examples and Types for BECx
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Building Examples and Types for BECx
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What is Commissioning?
A quality-focused process for enhancing the delivery of a project. The process focuses upon verifying and documenting that the facility and all of its systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet the Owner’s Project Requirements. (ASHRAE Guideline 0-2005)
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Commissioning Guidelines
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Building Enclosure Commissioning Standard
ASTM E2813 Standard • Includes qualifications for those
performing BECx • Based on NIBS Guideline 3 as the
process for commissioning • Includes basic and enhanced BECx
ASTM
International
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Where’s the Value in BECx?
— Higher level of quality assurance = improved performance = reduced risk.
— Potential for risk reduction increases with complexity of building enclosure systems and materials.
RIS
K
PROJECT
COMPLEXITY
Project without
BECx
Project with BECx
VALUE
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Building Enclosure Commissioning Process
Pre-Design Phase
Design Phase
Construction Phase
Occupancy and Operations
Phase
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Building Enclosure Commissioning Process
OPR/BOD
Design Reviews – DD and CD
Construction Phase
Close Out
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Building Enclosure Commissioning Process
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Fundamental Prerequisite – LEED v4
OPR/BOD
Design Review –
CD
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Enhanced Credit – LEED v4
Design Review –
DD
Construction Phase
Close Out
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Roles and Responsibilities
Owner
Designer
Enclosure Consultant
Other Designers
Contractor Subcontractors Enclosure Commissioner
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Basis of Design: Commissioning under LEED
OPR • Energy
Consumption Goals
• Tolerance for Water Leaks
BOD • Roof Insulation(R-
25)
• Hot-applied waterproofing
• Soldered Flashing
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Owner’s Project Requirements (OPR)
• Owner’s Vision
• Project Budget and Schedule
• Owner Directives
• Occupant Requirements
• System Performance Requirements
• Statistical and Quality Tools
• Benchmarking Requirements
• Operation and Maintenance
• Allowable Range of Operation
• Applicable Codes and Standards
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Owner’s Project Requirements (OPR)
• System Integration Requirements
• Site Information
• Restrictions and Limitations
• Training Requirements
• Warranty Requirements
• Quality Requirements
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Design Reviews
— Review of drawings and specifications • Compare to OPR and BOD • Typically completed at Schematic Design,
Design Development, and Construction Document phases
• Present a system options comparison • Review transitions between enclosure
systems • Identify material compatibility issues • Review HVAC interaction with enclosure
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Design Reviews
Heat
Transfer
Air Flows/
Pressures
Vapor
Drive/
Bulk
Water
Transpo
rt
• Below-Grade
• Wall Assemblies/Cladding
• Fenestration/Curtain Wall
• Roofing
• Interfaces between Assemblies
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Design Concepts – Window Flashing
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Design Reviews - Comments
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Design Reviews – Roof Membrane Penetrations
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Design Reviews – Parapet Flashing
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Design Reviews – Two Stage Sealant Joints
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Design Reviews – Terrace Conditions
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HVAC Interaction with Enclosure
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HVAC Interaction with Enclosure
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Verify Submittals
• Shop Drawings
• Product Submittals
• Project Schedule
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Mock-ups and Testing
• Observation of Laboratory and Field mock-up construction • Not just for aesthetics • The standard for acceptable
construction • Review mock-up for general
conformance to the construction documents and approved submittals
• Review constructability issues • Review sequencing issues • Opportunity for enclosure system
functional performance testing (lab and field)
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Laboratory Functional Performance Testing
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Field Functional Performance
Testing
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Field Functional Performance
Testing
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Construction Observation
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Construction Observation
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Building Enclosure Commissioning under LEED v4
Paul Totten, PE, LEED AP Vice President Practice Leader Building Enclosures [email protected] http://www.wsp.com/
Questio
ns?
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Discussion… Tell us what you think
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LEED certification Options?
Metrics in Building Envelope Performance
Too many?
Complicated?
Better metrics needed?
Are buildings built as designed? Lack of communication? Actions
needed?
Are envelope systems too complicated? Are more bulletproof systems needed?
Conflicts between trades?
What are the costs?
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Discussion… Tell us what you think
55
Retrofit Commissioning,
RCx
What is the difference? Cx
vs. RCx?
Building owners incentives?
Barriers?
Missing certification
programs?
Can new construction metrics
apply to retrofits?
Other…
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Action Items
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Get Involved with the Tech Team!
Join the team
Send us your
feedback on our
Envelope Tech Team
webpages
Provide input on
airtightness
requirements study
Collaborate on
Technology
Verification
opportunities 57
https://betterbuildingsinitiative.energy.gov/alliance/
technology-solution/building-envelope
Email: [email protected]