BS 7374:1990
Withdrawn
Methods of test for water vapour transmission resistance of board materials used in buildings
Hardcopy , PDF
English
11-30-1990
04-15-2002
Committees responsible
Foreword
Methods
1. Scope
2. Definitions
3. Determination of water vapour transmission
resistance by the wet cup method
4. Determination of water vapour transmission
resistance by the dry cup method
Appendix
A. Conversion of units
Table
1. Conversion factors
Figures
1. Test dish assembly wet cup method
2. Example of report of wet cup water vapour
transmission test
3. Test dish assembly dry cup method
4. Example of report of dry cup water vapour
transmission test
Two methods for determining permeability resistance. The wet cup method is for testing hygroscopic materials and the dry cup method is for testing non-hygroscopic materials.
| Committee |
B/541
|
| DevelopmentNote |
REPLACES DD 146:1986.
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| Supersedes |
| BS 4016:1997 | Specification for flexible building membranes (breather type) |
| 02/105033 DC : DRAFT AUG 2002 | BS 5534 - CODE OF PRACTICE FOR SLATING AND TILING (INCLUDING SHINGLES) |
| BS 2846-4:1976 | Guide to statistical interpretation of data Techniques of estimation and tests relating to means and variances |
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