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domestic smoke alarm certs
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<blockquote data-quote="ian932" data-source="post: 25489" data-attributes="member: 1533"><p>The use of dwellings is covered by BS5839 Part 6 and I'm not sure what the level is at the bed head though.</p><p></p><p>As an ex FA engineer we used Part 1 which is for all other applications (hotels, Student Accm, Nursing etc) states</p><p></p><p>'The sound should not permanently damage hearing but it should be a minimum of 65dBA or 5dBA above any background noise likely to exceed 30 seconds. Should excessive noise be present, a visual indication of the alarm condition should also be provided. If the alarm is to wake sleeping occupants, such as in a hotel, the sound level should be a minimum of 75dBA at the bedhead. Sound level frequencies should normally be kept within the range of 500 to 1,000Hz'</p><p></p><p>If it is 65db for dwellings does this mean we sleep lighter at home than in a hotel :z <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> </p><p></p><p>Oh and the sound level is reduced by approximately 20dBA by a door and by approximately 30dBA by a fire door.</p></blockquote><p></p>
[QUOTE="ian932, post: 25489, member: 1533"] The use of dwellings is covered by BS5839 Part 6 and I'm not sure what the level is at the bed head though. As an ex FA engineer we used Part 1 which is for all other applications (hotels, Student Accm, Nursing etc) states 'The sound should not permanently damage hearing but it should be a minimum of 65dBA or 5dBA above any background noise likely to exceed 30 seconds. Should excessive noise be present, a visual indication of the alarm condition should also be provided. If the alarm is to wake sleeping occupants, such as in a hotel, the sound level should be a minimum of 75dBA at the bedhead. Sound level frequencies should normally be kept within the range of 500 to 1,000Hz' If it is 65db for dwellings does this mean we sleep lighter at home than in a hotel :z :) Oh and the sound level is reduced by approximately 20dBA by a door and by approximately 30dBA by a fire door. [/QUOTE]
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