Upload
agnes-elliott
View
252
Download
3
Tags:
Embed Size (px)
Citation preview
Building Enclosure Commissioning (BECx):Practical Project Implementation
Objectives
Intro to BECx, importance and benefits
Similarities between BECx & typical Cx, industry standards and code mandates
Implementation of BECx
Lessons Learned
Outline
Code & Standard SynergyRegional Priorities Why BECxCx Process
DesignConstructionTurnover
Lessons Learned Q&A
Cx Process
Guideline / Standard – Optional Implementation – Code Mandate
LEED Mandates
*As of December 2011
Legislation, executive orders, resolutions, ordinances, policies, and incentives.
442 Localities (45 states)
34State 14
Fed.
? Numerous public school jurisdictions and institutions of Higher Education.
Code Adoption of MEP Cx
= CALGreen= IGCC Statewide= IGCC Local Governments* As of February 2013
BECx Process
NIBS Guideline 3 – 2012
ASTM E2813 – 12
LEEDv4.0
ASHRAE Guideline 0
Guideline / Standard – Optional Implementation – Code Mandate
ASHRAE Guideline 0
“The Commissioning Process is a quality-oriented process for achieving, verifying, and documenting that the performance of facilities, systems, and assemblies meets defined objectives and criteria.”
NIBS Guideline 3-2012
“Commissioning the enclosure differs from commissioning other building systems … The enclosure is designed and field assembled from numerous materials with varying properties. These materials are manufactured by different companies… assembled …by many different tradespeople, working for different contractors … in all possible weather conditions with the intention of meeting well defined performance criteria.”
ASTM E2813-12Standard Practice for Building Enclosure Commissioning
“BECx is a process that begins with the establishment of the (OPR) and endeavors to ensure that the exterior enclosure … meet or exceed the expectations of the Owner ... A fundamental understanding of … ASHRAE Guideline 0 and NIBS Guideline 3 is recommended for optimal use and application of this practice.”
USGBC LEEDv4.0
Certified - 25%Silver - 43%Gold - 54%Platinum - 84%Overall - 46%
Energy & Atmosphere Credit 3
Option 1 (3-4 points) – Enhanced Systems Cx
AND/OR
Option 2 (2 points) - Envelope Cx
“Commissioning of the building envelope can identify areas of concern related to air infiltration and leakage, moisture diffusion, surface condensation, and rain water entry – all issues that can negatively impact the building's energy performance and indoor environmental quality”
Why?
White = heat loss
Why?
Why?
ICE
Full of Water
Why?
Courtesy of Atlas Roofing; www.greenzone.com
Cx Process
OPR/ BOD/ Cx Plan• MEP items that are also specific to enclosure:
Interior and exterior temperature, humidity, insulation, wall R-values, window U factor, SHGC, warranties.
• Are the requirements concrete or abstract? • Are the requirements enforceable? • Glazing parameters (amount, views)• Air leakage • Annual Rainfall• Architect plays bigger role• Enclosure Testing
Specifications
01 91 13 General Cx Requirements• Project Team Responsibilities• Testing Requirements
Mockup Vs. In-PlaceAir and Water infiltrationThermal PerformanceMaterial Performance Properties
Design Reviews
Review For:• Integrity and Continuity of:
Air BarrierVapor BarrierThermal Resistance PlaneMoisture Resistance Plane
• Constructability• Other OPR items
Design Review Design Reviews
Design Reviews
Submittal Reviews
Pre-Functional Checklists
Site Observations
Site Observations
Site Observations
Functional Performance Testing
Functional Performance Testing
Functional Performance Testing
Functional Performance Testing
Functional Performance Testing
Functional Performance Testing
Functional Performance Testing
Functional Performance Testing
Functional Performance Testing
Functional Performance Testing
Functional Performance Testing
Turnover
• O&M Manual Review: Sealants, roofing, glazing
• Re-Commissioning not as robust• Maintenance of Enclosure Systems • Training • Warranty Review
Lessons Learned
• Scheduling• Tracking• Coordination• Lack of Participation• Lack of Authority• Design team being tied to schedule
That’s All Folks…Brian Davie, AIA LEED AP | Senior Sustainability ManagerFarnsworth Group, Inc.200 West College Ave., Suite 301 | Normal, IL 61761p 309.663.8436, ext. 207 | f 309.663.8862 | c 309.706.9508 www.f-w.com | www.greennavigation.com
Joshua Hickman, LEED AP BD+C, CxT | Sustainability Technical ManagerFarnsworth Group, Inc.9431 Haven Ave., Suite 117 | Rancho Cucamonga, CA 91730c 310.893.9787 www.f-w.com | www.greennavigation.com