Build it Right the First Time: Building Envelope Commissioning/ Retro-Commissioning

Transcription

1 Build it Right the First Time: Building Envelope Commissioning/ Retro-Commissioning NFMT 2016 T. Stephen Kisielnicki, RWC, LEED AP, BECxP March 24, 2016

2 About Gale

3 Building Envelope Technology Roof, walls, fenestrations, and waterproofing Construction phase assistance Roof and building envelope management programs Forensic evaluations Peer review and design assist Commissioning and testing Historic Preservation

4 What is Building Envelope Commissioning?

5 The process by which the design and constructed performance of building enclosure materials, components assemblies and systems are validated to meet defined objectives and requirements of the project, as established by the Owner. NIBS Guideline

6 How?

7 1. Compare the Design and Construction to: Owner s Project Requirements Basis of Design

8 2. Review Ability of Design to: Control heat, air and vapor flow Control water penetration Control light and solar radiation

9 3. Monitor Construction Verify quality control by Contractors Identify and assist with issues

10 4. Test and Verify Installed Assemblies Roof, air barrier, curtain wall testing during installation Air tightness and infrared testing at completion

11 Building Envelope Commissioning Helps to Avoid Common Problems in Building Construction Water intrusion Indoor air quality issues Air infiltration (energy loss and occupant discomfort) Improves balancing of HVAC equipment Mold growth

12 The Building Envelope Commissioning Process Construction Predesign Design Preconstruction Post- Occupancy

13 Pre-Design Phase Services Assist in creation of Owner s Basis of Design Review prime architect s early schematic designs

14 Design Phase Services Assist Owner with development of OPR Review conceptual plans for adherence to OPR Peer review DDs and CDS Testing Matrix and Commissioning Plan Develop commissioning specifications

15 Design Requirements Combinations of building enclosure components are numerous Design specifications must be clear and coordinated with drawings Building enclosures must perform as a system with all joints, junctures, and penetrations detailed All components must work in conjunction with adjoining assemblies

16 Typical Review Table

17 Design Considerations

18 Design Considerations

19 Importance of Design Phase Review High Pre-Design Schematic Design Construction Documents Shop Drawings Construction Low Conception Completion Project Time Line

20 Pre-Construction Phase Services Assist in Review of Sub-bids Review shop drawings and submittals Mock-Up Review and Testing Update Testing Matrix and Commissioning Plan Enclosure coordination meetings

21 Curtain Wall Shop Drawing Review

22 Curtain Wall Shop Drawing Review

23 Roofing Shop Drawing Review

24 Mock-Up To be built by onsite trades Full-scale laboratory testing To include as many typical details as possible Access for modifications to address potential problems Troubleshoot potential problems Establishes standard of care for trades To be tested for compliance with established standards

25 On-Site Mock-Up

26 Off-Site Mock-Up

27 Construction Phase

28 Construction Phase Services Finalize commissioning plan based on results of mock-up testing Integration of RFIs and change orders to the Commissioning Plan Verify and document field QA/QC programs Provision and followup of ongoing deficiency lists

29 Construction Administration Attend periodic progress meetings to discuss envelope construction issues Address detail modifications due to construction changes Document applicable comments/discussions Review and verify ongoing compilations of as-built drawings and conditions to be used for future updates and corrections

30 Construction Monitoring Perform periodic onsite observations of contractor s work Witness and verify field tests and field data reports Attend job-site meetings while critical enclosure components are being installed Summarize observations, concerns, and recommendations in a written report Review unique interface conditions to verify that they meet the design intent Confirm that defective conditions are rectified

31 Deficiency Tracking Log

32 Acceptance Phase Testing Review as-built drawings (building envelope) Final walk through punch list Final report

33 Acceptance Phase Testing Smoke tests, tracer gas (qualitative) Chamber tests (quantitative) Spray nozzle, spray rack leak tests Infra-red (after enclosure complete or with temp. heat)

34 Post Commissioning Maintenance Staff Training 10 month walk-through Warranty / seasonal evaluation Review performance with owner / user Lessons Learned Post-Occupancy Commissioning

35 Typical Design/Construction Issues

36 Design Redlines

37 Typical Redline Drawing

38 Unusual Detailing

39 Curtain Wall Detailing

40 Curtain Wall Detailing

41 Curtain Wall / Air Barrier Connections

42 Transition Material Specification

43 Transition Material at Curtain Wall and AVB

44 Transition Material at Curtain Wall and AVB

45 Transition Material at Curtain Wall and AVB

46 Transition Material at Curtain Wall and AVB

47 Transition Material at Curtain Wall and AVB

48 Transition Material at Curtain Wall and AVB

49 Transition Material at Curtain Wall and AVB

50 Coordination

51 Avoid This Flashing Conflict

52 Three-Dimensional Sketch

53 Avoid This Most Common Issue (Leakage/Business Interruption)

54 Retro Commissioning BECx for Existing Buildings Typically initiated due to inadequate performance May involve HVAC systems Need for a baseline evaluation

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