BS 6375-1:2004 pdf free.Performance of windows and doors—Classification for weathertightness and guidance on selection and specification.
BS 6375-1 This part of BS 6375 specifies the exposure categories related to test pressure levels for air permeability,watertightness and wind resistance for external windows and doors. It is applicable to all types of verticalwindows and doors, and includes windows in which the opening lights are not fully framed,e.g.adjustableglass louvres.
The standard excludes patent glazing (see Note) and curtain walls that span across horizontal structuralmembers of floors but includes the opening lights within a vertical patent glazing or curtain walling system.
An abbreviated method for calculating wind loading is given in Annex A.This takes into account factorsthat allow selection and specification of the appropriate classification.
NOTE Recommendations for the design and installation of patent glazing are given in BS 5516.
The following referenced documents are indispensable for the application of this document.For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments) applies.
6.1 Permanent and controlled ventilation devices, if any, shall be taped over except when it is required todetermine the air flow through such devices.
6.2 The specimen shall be tested in accordance with BS EN 1026 and classified in accordance withBS EN 12207.Tests shall be conducted with both positive and negative pressures. Classification levelsapplicable in the UK shall be in accordance with Table 1.
The air flow passing through the specimen, at each pressure difference applied in accordance withBS EN 1026 test method, shall be expressed as an average leakage rate per metre length of opening jointvisible on the inner face of the specimen and average leakage per metre square of window area.
A graph of air permeability rate against test pressure difference shall be constructed.The values shallnot exceed those in the appropriate graph in Figure 1. Fixed lights alone shall be classified by air permeability based on overall area.
Permanent and controlled ventilation devices shall be taped over.
The specimen shall be tested in accordance with BS EN 1027:2000, test procedure A. Classificationlevels applicable in the UK shall be in accordance with Table 1.
There shall be no water penetration during the test,up to and at, the required test pressure class givenin Table 1.
The specimen shall be tested in accordance with BS EN 12211.Classification levels applicable in theUK shall be in accordance with Table 1.BS 6375-1 pdf download.