Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 11 replies
  • Subscribers 33 subscribers
  • Views 1405 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Night time lighting of public shelter/evacuation center.

broadgage

Is there any guidance as to what level of overnight lighting should be provided in an indoor sports hall if this be used for emergency overnight shelter/sleeping after some emergency.

The existing lighting is T8 fluorescent and gives three switch selectable lighting levels, but the lowest of these is clearly very excessive if people are sleeping, whereas total darkness clearly carries risk of trips, falls, and other accidents.

I was thinking about providing two levels, 10 lux initially and then 1 lux. I lux is several times that provided by moonlight and “sounds about right” But is there any better guidance than me thinking “that sounds about right.”

10 lux being provided as an intermediate level between daytime lighting and overnight lighting. 

Parents
  • 0

    Is this lighting level to be uniform over the whole floor area or just “walkways” and access points?

    The I.E.T's booklet “Electrician's Guide to Emergency Lighting, 3rd Edition” discusses anti-panic lighting, which is the nearest to your situation that I can think of. It covers large areas above 60m2. Two or more luminaires per room should be used for reliability, in case one fails. Clause 4.3 of B.S. E.N. 1838 applies.

    0.5 lx is mentioned at floor level. The ratio of maximum to minimum of the anti-panic lighting illuminance shall not be greater than 40:1.

    I imagine that your lighting scheme will resemble that of a cinema. (Remember them?) People sleep through films, so that proves that the lighting level there is o.k. for sleeping. Also, the low lighting is suitable for back row biological activities as well.

    So, I reckon that you need just enough light for people with night adjusted eyes, to get up to visit the bog or go outside for a smoke. But, if people are coming and going as well, they must be prevented from walking into sleeping people or tripping over their luggage,  pets or little Johnny's skateboard or scooter..

    Z.

Reply
  • 0

    Is this lighting level to be uniform over the whole floor area or just “walkways” and access points?

    The I.E.T's booklet “Electrician's Guide to Emergency Lighting, 3rd Edition” discusses anti-panic lighting, which is the nearest to your situation that I can think of. It covers large areas above 60m2. Two or more luminaires per room should be used for reliability, in case one fails. Clause 4.3 of B.S. E.N. 1838 applies.

    0.5 lx is mentioned at floor level. The ratio of maximum to minimum of the anti-panic lighting illuminance shall not be greater than 40:1.

    I imagine that your lighting scheme will resemble that of a cinema. (Remember them?) People sleep through films, so that proves that the lighting level there is o.k. for sleeping. Also, the low lighting is suitable for back row biological activities as well.

    So, I reckon that you need just enough light for people with night adjusted eyes, to get up to visit the bog or go outside for a smoke. But, if people are coming and going as well, they must be prevented from walking into sleeping people or tripping over their luggage,  pets or little Johnny's skateboard or scooter..

    Z.

Children
No Data

Community Rules & Guidelines