ASTM E2947-21a

5.1?This guide provides recommendations for the enclosure commissioning process from its project planning through design, construction and occupancy and operation phases. This guide is intended for various building types. Although Practice E2813 defines two levels of enclosure commissioning, fundamental and enhanced, complex buildings and Owners seeking a higher level of assurance may require more intensified enclosure commissioning than the minimum requirements described in this guide and Practice E2813.13

5.2?The process uses performance-oriented practices and procedures to verify that the project is achieving the expectations described in the OPR and defined by the contract documents throughout the delivery of the project.

5.3?The BECx process is recommended to begin during the pre-design phase and continues through the occupancy and operations phase. The process includes specific tasks during each project phase.

5.4?The commissioning process is outlined in ANSI/ASHRAE/IES Standard 202. It is recommended that the reader understand the process provided in that document. This standard guide and Practice E2813 provide a specific process related to the building enclosure commissioning.

5.5?Note that the enclosure commissioning process should not infringe upon the authority or responsibility of the Owner, the projects designers or contractors. The CxG and BECxG can identify areas of concern relative to the OPR, which are discussed with the Owner and other stakeholders; however it is the Owner who directs the project, Cx team, and BECx team. It is recommended that the BECxP be engaged in pre-design phase to define the scope of BECx so that the Owners agreements with the project team (including the contractor) clearly define the scope of contracted tasks that interface with BECx process.

5.6?BECx does not replace a traditional design/construction process but is meant to enhance and be an integral part of that process by validating the design and verifying the construction meets the requirements described in the OPR and defined by the contract documents.

5.7?In this guide, the performance objectives for attributes of the building enclosure as required by an Owner are considered. Enclosure attributes to be considered include the control of moisture, condensation, heat flow, air flow, water vapor flow, noise, fire, vibrations, energy, light, infrared radiation (IR), ultraviolet radiation (UV), as well as the structural performance, durability, resiliency, security, reliability, aesthetics, value, constructability, maintainability over its life cycle, and sustainability of the enclosure elements to meet or exceed the expectations described in the OPR and defined by the contract documents. The commissioning objectives for a buildings enclosure may vary by the Owners requirements. The objectives contained in the OPR may vary by occupancy, use, size, and the project requirements, which may include other requirements across these or other variables.

5.8?Approach:?

1.1?PurposeThis guide provides procedures, methods and documentation techniques that may be used in the application of the building enclosure commissioning (BECx) process. This guide is complementary to Practice E2813 and is aligned with ANSI/ASHRAE/IES Standard 202 and ASHRAE Guideline 0.

1.2?ExtentThe process outlined in this standard guide applies to each building delivery phase from pre-design through occupancy and operation. The specific application of this guide may vary to suit the Owner, the project delivery method and the building project as described in the Owners Project Requirements (OPR), and as defined by the contract documents.

1.3?Primary FocusThe primary focus of this process includes, but may not be limited to, new construction of building enclosures, existing building enclosures undergoing substantial renovation or alteration, and continuous commissioning of enclosure systems.

1.4?Contractual and Regulatory ObligationsThe methods described in this guide are not intended to supersede or otherwise replace the contractual obligations reserved specifically for the parties responsible for the design and construction of a building or structure, nor to alter the roles, responsibilities and duties that may otherwise be assigned to those parties by applicable regulatory or statutory law.

1.5?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.