BS 493-1995+A1-2010
墙壁通风用通气空心砖和花栅规范

Specification for Airbricks and gratings for wall ventilation

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标准号

BS 493-1995+A1-2010

发布日期

1995年04月15日

实施日期

1995年04月15日

废止日期

无

中国标准分类号

Q15

国际标准分类号

91.060.10

发布单位

GB-BSI

引用标准

BS 1191-1 BS 2782-3 BS 4027 BS 6610 BS 6750 BS EN 197-1 BS EN 197-4 BS EN 1559-1 BS EN 1559-4 BS EN 1676 BS EN 1706 BS EN 1976 BS EN 1978 BS EN 10029 BS EN 10048 BS EN 10051-1991+A1-1997 BS EN 10095 BS EN 10130 BS EN 10346 BS EN 12620-2002+A1-2008 BS EN 1

被代替标准

93/105570 DC-1993 BS 493-1970 BS 493-1995

适用范围

This British Standard specifies requirements for two classes of wall ventilating units as follows: class 1:airbricks for useinexternal walls; class 2: wall ventilators or gratings for internal use. Some typicalexamples of designs are shown in Figure 1,Figure 2 and Figure 3. Other patterns may however be supplied, provided they conform to the requirements of this standard. Guidanceon the information to be supplied by the purchaser when ordering is given in Annex A. Thisstandard contains no requirements for the following properties. Durability (other t hanresistance t o colour change of thermoplastics materials). It is recommended that where there is uncertainty about durability then expert advice should be sought. a) Fire properties s o tf hermoplastics materials. The general useof thermoplastics airbricks, wall ventilators and gratings in isolation in masonry is considered t ohave aninsignificant effect on t he spreadoffire.However, special consideration should begiven to the useof thermoplastics air bricks where it is intended togroup a number of them together, e.g. for boiler house ventilation. b) Compressive strengthof thermoplastics air bricks. The general useof theseinisolation is considered tohave tohave aninsignificant effect on masonry strength. However, special consideration should begiven to their use where it is intended t ogroup a number o ft hem t ogether, e.g. for boiler house ventilation.