Standard Practice for Selection, Design, （对选择的标准做法,设计,）.pdfVIP

Designation: E1643 – 11 Standard Practice for Selection, Design, Installation, and Inspection of Water Vapor Retarders Used in Contact with Earth or Granular Fill Under Concrete Slabs1 This standard is issued under the fixed designation E1643; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval. 1. Scope 2.2 Other Standard:3 1.1 This practice covers procedures for selecting, designing, ACI 302.2R–06 Guide for Concrete Slabs that Receive installing, and inspecting flexible, prefabricated sheet mem- Moisture-Sensitive Flooring Materials branes in contact with earth or granular fill used as vapor 3. Significance and Use retarders under concrete slabs. 1.2 Conditions subject to frost and either heave or hydro- 3.1 Vapor retarders provide a method of limiting water static pressure, or both, are beyond the scope of this practice. vapor transmission and capillary transport of water upward Vapor retarders are not intended to provide a waterproofing through concrete slabs on grade, which can adversely affect function. floor finishes and interior humidity levels. 1.3 The values stated in inch-pound units are to be regarded 3.2 Adverse impacts include