4.5.2 Fire resistance - Walls
The high fire resistance of Aircrete makes it suitable for firewalls with fire resistance performance depending on the thickness.
Design of fire resistant walls should include consideration of the
junctions between the wall and other parts of the structure so the
fire resistance provided by the Aircrete wall is not reduced.
4.5.3 Fire resistance - Floors
Fire resistance values for beam and Aircrete block floors should be
obtained from the precast beam manufacturers.
| 4.6 Moisture
4.6.1 Rain
The map indicates categories of exposure to wind driven rain in the
various parts of the UK. Since such data is variable, the definitions
of the exposure categories
overlap and a range of indices are recommended for each category.
Although the Severe and Very Severe categories apply to much of the
West of Scotland and Wales for example, the exposure rating also takes
account of local features which afford protection to a building.
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