28w 2D

[fattony]

Hi all

I need to fit some 28w 2D fittings along a walkway behind some industrial units, I'm looking for them to provide sufficient light to be able to walk along the path safely.

I'm trying to find out what would be a good distance between the lights, I'm thinking 4m but would be that too far and what would be the best height for these?

Thanks

 

[333rocky333]

Is it an emergency/fire exit route
Afaik there should already be at least an emergency light external to each fire exit door if they open on to the walkway

 

[fattony]

yep emergency lights are allowed in my design just trying to work out the spacings

 

[ericmark]

It is always hard to work out what is required. Much depends on the walls white will reflect far better than other colours and also how much needs to be seen.

Side of my house on odd time there is a bike but flat paved floor and 8W CFU is enough to walk but clearly not enough to work.

Again who is using it? My father-in-law needs more light than I do but he should not be walking to rear of my house at night.

Falklands the bed rooms in main accommodation had single 2D lamp at 16W and although not great there were no real complaints about the light. I would think the rooms were around 12 foot by 12 foot so looking at that they should be good enough.

 

[fattony]

Its a walkway behind an industrial unit, so it doesnt need to be floodlit, definitely difficult trying to work out the spacings

 

[ban-all-sheds]

Maybe, given all the legal and liability issues, it would be wise for the people responsible for the walkway to engage the services of a competent lighting designer, rather than relying on your guesswork?

 

[Robin0577]

Does the client, or any applicable regulation specify a particular lux level?

If so, then I would be inclined to wire a pair of the proposed fittings temporarily with long flexes and plugs, then experiment one evening using one of these.....

http://www.tlc-direct.co.uk/Main_Index/Test_Meters_Index/Test_Meters_9/index.html

Then install them in the proper manner the following day. That would enable you to comply with whatever requirements are appropriate without spending hours calculating beam patterns, reflectivity of surfaces, etc.

 

[fattony]

Maybe, given all the legal and liability issues, it would be wise for the people responsible for the walkway to engage the services of a competent lighting designer, rather than relying on your guesswork?

Maybe your right