The Comparative of Turkey and U.S. Green Building Certification Systems: Mechanical Systems in the Commissioning Process

Green Building Certification

With the realization of industrial revolutions, the melting of glaciers in the world and the increase in global warming, human beings have to take some precautions. The process started with the Montreal Protocol in the 1980s, the Kyoto Protocol in the 2000s and then the Paris Agreement began to take measures for global warming with the participation of countries all over the world.

In this context, building certification systems have been developed to improve energy efficient and quality building understanding with a holistic approach of reducing or saving energy consumption. LEED certification systems developed by United States Green Building Council green building certification.

In addition, the Green Building Association in Turkey (CEDBIK) activities are carried out by this area.

The mechanical, electrical and automation systems of the buildings are called commissioning process, starting from the preliminary design stage at the beginning of the project, determining the devices in the design and manufacturing stages, selecting, arriving at the site and performing the pre-function controls, and this process is called commissioning process and this process is the stable operation of the systems in the green buildings.

Commissioning can be done in many different areas including mechanical systems. Commissioning for green buildings only covers HVAC systems. The main purpose is to provide energy efficiency and comfort conditions.

commissioning types

Commissioning Types

NEW
BUILDING

RETRO/EXISTING
BUILDING

RE-
COMMISSIONING

ONGOING
COMMISSIONING

ENVELOPE
COMMISSIONING

GREEN
BUILDING

Benefits of Commissioning

  • Reduction of change orders and additional claims
  • Fewer project delays

  • Managed start-up requirements

  • Shorter building turn-over transition period

  • Less post-occupancy corrective work

  • Minimized effects from design changes

  • Improved indoor air quality and occupant productivity

  • Better operation, maintenance and reliability

  • Lower energy and operations costs

  • Value-added quality construction

  • Complete and useful O&M documentation

  • Owner advocacy for design and construction decisions

  • Documentation of the entire construction process

The perspective of green building certification systems on commissioning will be evaluated.

Located in commissioning process developing specifications for many years in the American tenders, recently heard in Turkey, it has begun to be organized with seminars. Especially with LEED certification is the mandatory criteria as well as additional points that require certificates of green building topics for about 10 years in Turkey will be compared with the BEST certification system developed by CEDBİK is kept in the forefront.

USGBC

LEED types

In 1993, Rick Fedrizzi, David Gottfried and Mike Italiano convened representatives from 60 firms and several nonprofits in the American Institute of Architects’ boardroom for the founding meeting.

It was then that ideas were shared for an open and balanced coalition spanning the entire building industry and for a green building rating system, which would later become LEED.

ÇEDBİK

LEED types Green Building Certification

Established in 2007 by Ali Nihat Gokyigit and Duygu Erten convened representatives from 25 firms, the Turkish Green Building Council (ÇEDBİK) aims to contribute to the building industry’s development by means of the spread of principles of sustainability.

LEED RATING
Integrative Process 1
Location and Transportation 16
Sustainable Sites 10
Water Efficiency 11
Energy and Atmosphere 33
Materials and Resources 13
Indoor Environmental Quality 16
Innovation 10
Total Points 110
BEST RATING
Integrative Green Project Management 9
Site Using 13
Water Using 12
Energy Using 26
Health and Comfort 14
Materials and Resources Using 14
Living 14
Operation and Maintenance 6
Innovation 2
Total Points 110
Prerequest- Fundamental Commissioning and Verification POINTS
EAp1: Fundamental Commissioning and Verification Mandatory
Enhanced Commissioning Credit
EAc1: Enhanced Commissioning Total Points 6
Option-1: Systems Commissioning 4
Path-1: Enhanced Systems Commissioning 3
Path-2: Enhanced and Monitoring-Based Commissioning 1
Option-2: Envelope Commissioning 2
BEST POINTS
Control-Commissioning-Acceptance Process of Building Energy Systems Mandatory
Building System Manuals 1 Point
Who can be the Commissioning Authority? LEED BEST
Fundamental Enhanced Mandatory
An employee of the architecture or engineering firm a member of the design team (e.g., a project architect, engineer, or energy modeler who is also the HVAC designer) No, unless project is under 1.860 m² No <5000 m²
not a member of the design team (e.g., a LEED administrator or energy modeler who is not participating in the design) Yes No Similar
A subconsultant to the architecture or engineering firm a member of the design team (e.g., a project engineer subcontracted to the architect) No, unless project is under 1.860 m² No <5000 m²
not a member of the design team (e.g., a LEED administrator, Cx specialist, energy modeler) Yes Yes Not specified
An employee or subcontractor of the general contractor or construction manager a member of the construction team No, unless project is under 1.860 m² No <5000 m²
not a member of the construction team Yes No Similar
An employee of the owner or an independent consultant contracted to the owner Yes Yes Specified for P.M. Firm

Procedures of Commissioning Activities

Procedure LEED (Fundamental) LEED (Enhanced) BEST (Mandatory)
Experience for CxA experience on at least two building projects with a similar scope of work. experience on at least two building projects with a similar scope of work. Not specified
Reporting CxA must report findings directly to the owner. CxA must report findings directly to the owner. Not specified
Reference Standards ASHRAE ASHRAE
  • ASHRAE
  • IES
  • CIBSE
  • EN
Stages Develop the OPR Develop the OPR Similar
Develop a BOD Develop a BOD Similar
Review the OPR, BOD, and project design Review the OPR, BOD, and project design Similar
Develop and implement a Cx plan Develop and implement a Cx plan Not specified
Confirm incorporation of Cx requirements into the construction documents Confirm incorporation of Cx requirements into the construction documents Not specified
Develop construction checklists Develop construction checklists Specified for TAB
Develop a system test procedure Develop a system test procedure Specified for TAB
Verify system test execution Verify system test execution Specified for TAB
Maintain an issues and benefits log throughout the Cx process Maintain an issues and benefits log throughout the Cx process Similar
Prepare a final Cx process report Prepare a final Cx process report Not specified
Document all findings and recommendations and report directly to the owner throughout the process Document all findings and recommendations and report directly to the owner throughout the process Not specified

Difference for Enhanced Commissioning

Stages
  • Owner’s training requirements
  • Perform seasonal testing
  • Perform 10-month review
  • Develop ongoing Cx plan
  • Include monitoring-based and/or envelope Commissioning requirements
  • Commissioning with automation system
  • Verify TAB
  • O&M Manuals

It is found that; item of O&M Manuals are similar. In LEED, that’s more detail.

  • Sequence of operation
  • Preventive maintenance plan

  • HVAC equipment setpoints

  • Equipment run-times

  • Operations and maintenance manuals

According to Commissioning Process in Green Building Certificate Systems in LEED & BEST

When LEED and BEST Certificates are compared; Although BEST is younger than LEED, the article here is based only on Commissioning comparison in the two certification systems. We would like to thank especially those who contributed to the preparation of ÇEDBİK and BEST Certificate for their contribution to our country. If other titles of the certification are examined; for example, a title such as the Prevention of Noise Pollution from Construction was included in BEST, while LEED could not find a place even in the 4th version.

  • BEST is younger than LEED
  • It can be upgraded;

    • Description of Commissioning Authority
    • It is not the same Project Manager and Commissioning Authority
    • It has different procedure Project Management and Commissioning
    • It is not the same Commissioning and TAB (Testing, Adjusting, Balancing)
    • Because of effect of energy consumption, Enhanced Commissioning is non-negligible
    • The standard to be applied within the scope of the Commissioning should be clearly stated
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