BS 4873:2016 pdf free.Aluminium alloy windows and doorsets – Specification.
BS 4873 Standard is applicable to windows in which a casement or sash frame member is no longer than 3 m and in which a door leaf frame member is no longer than 3.5 m. This British Standard does not apply to curtain walls that span across horizontal structural members of floors, but it is applicable to windows or doorsets fitted within a curtain walling system.
This British Standard is not applicable to secondary windows applied to convert existing single windows into double or coupled windows.
NOTE Guidance on the evaluation of conformity is given in Annex A. Guidance on durability and recycling is given in Annex B.
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
When ancillary components such as sills, couplings, etc. are formed from sheet materials, they shall be fabricated from designated
alloys 1200, 3103, 5005 or 5251 conforming to BS EN 485-2:2013 in a temper suitable for the particular type of application and degree of forming to be adopted. The aluminium profiles used in the construction of the frames excluding glazing beads, nibs, interlocks and similar features shall be not less than 1.2 mm thick. NOTE This dimension takes into account any tolerances specified in the product standards or other industry standards
The aluminium shall be finished by one of the following:
a) anodizing conforming to BS 3987 or BS EN ISO 7599;
b) liquid organic coating conforming to BS 4842; or
c) powder coating conforming to BS 6496 or BS EN 12206-1.
Frame joint sealing materials After the window or doorset has been tested in accordance with BS 6375-1 and BS 6375-2, there shall be no degradation of the sealing or the operational function of the window due to failure of the sealing materials.
NOTE Materials should be able to withstand stresses during assembly, transportation, installation and operation of the window.
Bearing devices and hardware Metallic materials used for bearing devices and hardware shall have at least the equivalent corrosion resistance to 85 EN 1670, grade (class) 3 (96 h) when subjected to the neutral salt spray test in accordance with BS EN ISO 9227. Tests shall be carried out on complete hardware items as supplied. NOTE 1 For environments in very polluted localities such as those subject to combinations of industrial and coastal pollution, 85 EN 1670. class 4 should be used. NOTE 2 Requirements and test methods for hardware materials are specified in 85 EN 13126.BS 4873 pdf download.