Work Item
ASTM WK90819
Revision of E1825-21 Standard Guide for Evaluation of Building Exterior Enclosure Materials, Products, and Systems
Rationale
The proposed revisions were discussed at subcommittee. The definition is more broadly stated to include the boundary or barrier separating environmentally distinct spaces within a building – a definition that is more closely aligned with other allied organizations such as ASHRAE. Note, the proposed definition includes the term “control layer” and “environmentally distinct spaces” which are currently undefined. Separate future ballots will be created specific to the following discussions intended to provide context for these terms as they relate to the building envelope (enclosure). These draft discussions are included below for context. Comments regarding the draft discussions should not be included on this ballot but can be emailed directly to the Technical Contact for future consideration.
Draft DISCUSSION — Control layers commonly refer to materials, components, assemblies, and/or systems that manage the transmission of heat, air, and moisture into or through the building envelope (enclosure). There may be other types of control layers present within the building envelope (enclosure) apart from those listed above.
Draft DISCUSSION — Environmentally distinct spaces may be thought of as areas within a building that are unconditioned, semi-conditioned, or intentionally conditioned to different parameters than the remainder of the building. In commercial buildings, these spaces might include service areas such as loading docks, mechanical spaces, ventilated attics, or storage areas. They may also include areas with specific environmental requirements such as natatoriums, cold-storage spaces, high-humidity laboratories and surgical suites, or clean rooms. These and similar areas would constitute environmentally distinct spaces.
Work Item Status
Date Initiated: 05-17-2024
Technical Contact: Andrew Noto
Item: 014
Ballot: E06 (24-02)
Status: In Balloting