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5.3.2.2 Refer to X1.6 for discussion on water vapor trans- mission, rate of vapor retarder. 5.3.2.3 The perm rating determined tinder these criteria shall supersede that in references 5.2 should this value be less than required under references in 5.2. 5.3.3 The types and amounts of deleterious compounds in the soil on the building site. 5.3.3.1 Review building site soil analyses for deleterious materials and compounds and select a vapor retarder material that will withstand exposure to such deleterious material's or compounds. 5.3.4 The tensile strencyth and puncture resistance of the vapor retarder material. 5.3.4.1 Select a vapor retarder material capable of with- standing potential construction site damage. 5.3.5 The type of base material on which the vapor retarder is to be installed. 5.3.5.1 Select vapor retarder material capable of withstand- ing tear or puncture damage due to the type, gradation, and texture of the base material to be installed below the material. Prepare base material to minimize risk of puncture, for example, by rolling or compacting. 5.3.6 The expected exposure of the vapor retarder to ultra- violet rays. 5.3.6.1 Assess expected exposure of the vapor retarder material to ultra violet rays and select a material capable of withstanding such exposure and maintain its capability to perforin its intended function. S. Placernent 6.1 Level and compact base material. 7. Protection 7.1 lake precautions to protect vapor retarder from damage during installation of reinforcing steel, utilities and concrete. 7.2 Use reinforcing bar supports with base sections that minimize the potential for puncture of the vapor retarder. 7.3 Avoid use of stakes driven through the vapor retarder. 7.4 Refer to ACI 302.2R-06 for discussion of aggregate for protection of vapor retarder, including the risks of installing aggregate fill above a vapor retarder that can act as a reservoir for water. 8. Inspection and Repair 8.1 Inspect and mark all areas of damage and insufficient installation of the vapor retarder sufficiently in advance of concrete placement such that deficiencies may be corrected before concrete is placed. G.s7. Repair -vapor retarder darnal,ed di.irrng pl'acerient of reinforcing or concrete with vapor barrier material or as instructed by manufacturer. 8.3 Lap beyond damaged areas a minimum of 6 in. (50 mm) and seal as prescribed for sheet joints. 8.4 Avoid the use of non -permanent stakes driven through vapor retarder. 8.5 If non -permanent stakes are driven through vapor retarder, repair as recommended by vapor retarder manufac- turer. 6.2 Install vapor retarder material with the longest dimen- 8.6 Seal permanent penetrations as recommended by vapor cion parallel with the direction of concrete pour. retarder manufacturer. 6.3 Face laps away from the expected direction of the concrete pour whenever possible. 6.4 Extend vapor retarder over footings and seal to founda- tion wall, grade beam, or slab at an elevation consistent with the top of the slab or terminate at impediments such as water stops or dowels. Seal around penetrations such as utilities and columns in order to create a monolithic membrane between the surface of the slab and moisture sources below the slab as well as at the slab perimeter. 6.5 Lap joints minimum 6 in. (150 mm), or as instructed by the manufacturer, and seal laps in accordance with the manu- facturer's recoan michdations. 6.6 Extend vapor retarder over the tops of pile caps and grade beams to a distance acceptable to the structural engineer and terminate as recommended by the manufacturer. 9. Slab Moisture Content 9.1 Moisture Conditions of Slab—Following placement of the concrete and acclimatization of the building, comply with Practice F710 and floor covering manufacturer's recommenda- tions for any specified tests for moisture emissions from or moisture content of the slab on grade. Review written report(s) on test results prior to the installation of the floor covering or coating installation. Obtain written approval of acceptable stab conditions from the floor covering manufacturer and project design professional. 9.2 See ACI 302.2R-06. 10. Keywords 10.1 concrete slabs; vapor; vapor retarder Copyright by ASTM [nt't (all rights reserved), Tue Apr 21 13:01:53 EDT 2015 D ownloadedlpr€rated by Lillian Babcock (Condor Earth Technologies, Inc.) pursuant to License Agreement. No further reproductions authorized