BS 5713:1979

Foreword
Cooperating organizations
Specification
1 Scope
2 References
3 Definitions
4 Materials
5 Dimensions
6 Dimensional tolerances
7 Marking description
8 Performance
Appendices
A Methods of test
B Performance
Tables
1 Typical thermal transmittances for different
   conditions of exposure
2 Size limitations for production units covered by this
   standard
Figures
1 Typical example of a viewing box for ultraviolet
   exposure test
2 Typical example of a jig and dial gauge for measuring
   change in thickness
3 Typical example of apparatus for dew-point
   measurement
4 Typical example of ultraviolet fogging test apparatus
5 Typical example of weathering apparatus for sealed
   double glazing units
6 Typical example of a high humidity cycling cabinet

Describes performance requirements and associated test methods for the sealing arrangements, fabrication of factory made hermetically sealed flat double glazing units, type of glass and the maximum dimensions and dimensional tolerances for such units. The detail design of units is not specified. No requirements are included concerning the specific applications for which double glazing units, complying with the requirements of this standard, may be suitable. The thermal and acoustic properties of units are not specified, byt typical thermal transmittances for hermetically sealed double glazing units under varying conditions of exposure are given in table 2.