Re: Lighting Design for Kitchen

[Ben McCormack <yahoogroup@xxxxxxxxxxxxxxxxxxx>]

All

To close off an open question about the reccommended light levels in=20=20
various rooms. I found this on the tlc site.

http://www.tlc-direct.co.uk/Technical/DataSheets/Illuma/LightLevels.htm

Ben

On 29 Dec 2008, at  12:01, Ben McCormack wrote:

> All
>
> With regard to required light levels I think I am getting somewhere
> with the American regulations
>
> http://www.redwoodcity.org/cds/building/pdf/handouts/Electrical/kitchen_l=
ighting_requirements.pdf
>
> "A design recommendation may be to utilize the Illuminating
> Engineering Society
> of North America (IESNA) guidelines that at least 30 footcandles of
> light be
> provided for seeing tasks in kitchens'
>
> and
>
> One footcandle =E2=89=88 10.764 lux.
>
> This gives a recommended lux level of 320.
>
> Now with 20W bulbs I need 20 Lights
> and
> with 50w bulbs I need 9 Lights.
>
> Ben
>
> On 29 Dec 2008, at 11:52, Ben McCormack wrote:
>
> > Paul
> >
> > I have been looking at the Light Corporation for a while. They
are
> > based just down the road from me.
> >
> > I was also looking at Jonh Cullen but as you say they are
expensive
> > and also design to use their own fittings, this pushes the cost
up.
> >
> > The only thing I can't currently work out is the required=20=20
> illuminance
> >
> > 320 lux	Recommended office lighting (Australia)[8]
> > 400 lux	Sunrise or sunset on a clear day. Well-lit office area.
> > 500 lux	Lighting level for an office according to the European
law=20=20
> UNI
> > EN 12464
> >
> > If I go with 500lux I end up with 25 lights just in the ceiling
> >
> > Drop that down to 320lux and it comes out at 16 fittings.
> >
> > Ben
> >
> > On 29 Dec 2008, at 10:48, Paul Gale wrote:
> >
> > > Hi Ben,
> > >
> > > I think you're doing the right thing designing yourself - I
used a
> > > "medium" level designer from John Cullen Lighting
in London but
> > > really did most of it myself anyway when I was speaking to
her!
> > > Wasted cash in my case (about =C2=A3500 IIRC) - that was for
the new
> > loft
> > > office and stair wells.
> > >
> > > 25 fittings is a LOT!, but if a load of them are
task/uplights/
> > > effect then that's closer. Still, they'll cost a fortune
with
> > > associated CBus dimmers and transformers, fittings and
good=20=20
> quality
> > > lamps! I'd say, get that number down a bit if you can.
> > >
> > > If they're 50W halogen, running costs would also be a factor
you
> > > shouldn't ignore.
> > >
> > > Do use a high quality lamp though - I used Bell Aluminium
halogen
> > > 5000hr dichroic lamps with a range of beam angles. They also
have
> > > the benefit of throwing most of the heat forwards, so
reducing the
> > > fire risk and melting of fitting/transformer etc behind!
Good
> > > quality lamps make a big difference to the quality of light
and=20=20
> life
> > > of the lamp.
> > >
> > > I replaced most of my downlights with a "dark"
effect halogen -=20=20
> has
> > > a black ring baffle inside the body before the lamp to
reduce
> > > horizontal glare. This is nice as it adds a real feeling of
> > > "designed" lighting - a lot less eye drawing glare
on the ceiling,
> > > more "pools" of light in carefully chosen places
etc.
> > >
> > > Also consider the angle of beam of the lamp - you can do
some=20=20
> great
> > > things with really narrow beams to illuminate smaller
items/areas
> > > and use the light as a effect light. Also coloured
filters/=20
> dichroic
> > > lenses can be fun.
> > >
> > > These are the range I used for my replacement and new
downlights:
> > >
> > > http://www.lightcorporation.com/cat/downlights.php
> > >
> > > Also used these in the loft shower room which look pretty
funky -
> > > really well made solid aluminium turned fittings - top
quality:
> > >
> > > http://www.lightcorporation.com/cat/cam50.php
> > >
> > > I also used a number of colour changeable LED
marker/uplights=20=20
> from:
> > >
> > > http://www.abstractavr.com/
> > >
> > > I used a custom version of:
> > >
> > > http://www.abstractavr.com/steplights/
> > >
> > > with 1W RGB LED's in, driven from a DMX capable LED driver.
I've=20=20
> not
> > > programmed them up yet, but will eventually be controlled
via CBus
> > > and Kevin's xAP/HV/CBus gateway (fab bit of kit!)
> > >
> > > HTH?
> > >
> > > Paul.
> > >
> > >
> > >
> > >> -----Original Message-----
> > >> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On
> > >> Behalf
> > >> Of Ben McCormack
> > >> Sent: 29 December 2008 10:05
> > >> To: UKHA Mailinglist; UK Selfbuild
> > >> Subject: [ukha_d] Lighting Design for Kitchen
> > >>
> > >> All
> > >>
> > >> I have started looking into the lighting design for the
kitchen.
> > The
> > >> space is quite large 4.5 * 5.5m and all of the lighting
will be
> > >> controlled by cbus dimmers.
> > >>
> > >> I have considered using a lighting designer but thought
I would
> > >> have a
> > >> go myself last night.
> > >>
> > >> The plan is to have low voltage halogens in the ceiling
and then
> > task
> > >> lights under the cabinets.
> > >>
> > >> So I started by finding that Aurora seem to produce nice
fittings
> > and
> > >> transformers at a reasonable price. (http://www.aurora-lighting.com/
> > )
> > >>
> > >> I then found Relux which is a lighting design program.
Aurora
> > produce
> > >> the specifications for each and every one of their
fittings that
> > >> feeds
> > >> into Relux. (http://www.relux.biz/) The software is
free to
> > download
> > >> and not too difficult to get your head around.
> > >>
> > >> So I chose a standard Aurora fitting and put all of the
room
> > details
> > >> into Relux.
> > >>
> > >> You can also add things like windows and different
finished on=20=20
> the
> > >> floor and walls.
> > >>
> > >> Fitting - http://www.aurora-
> > >> lighting.com/ProductPages/LampProductDetails.aspx?
> > >> g=3D2951&c=3D6&b=3D71&oc=3D81
> > >>
> > >> There are a couple of factors that affect the
calculation
> > >>
> > >> Maintenance Factor - I assume this is used for
commercial
> > >> installations where Maintenance and blown bulbs can be a
major
> > issue.
> > >> I set this to 1.
> > >>
> > >> Illuminance Required - After digging around I left this
set at=20=20
> 500
> > >> lx.
> > >> This seems to be a reasonable figure to use.
> > >>
> > >> The end result of this is 25 Light fittings in this
space. Spaced
> > >> on a
> > >> 1m grid.
> > >>
> > >>
> > >> So how does this compare with other people who have
fitted low
> > >> voltage
> > >> in the kitchen. It seems rather a lot of light fittings
to me?
> > >>
> > >> Regards
> > >> Ben
> > >>
> > >>
> > >> ------------------------------------
> > >>
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> > >>
> > >>
> > >>
> > >>
> > >> __________ Information from ESET NOD32 Antivirus,
version of=20=20
> virus
> > >> signature database 3719 (20081227) __________
> > >>
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> > >>
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> > >
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> >
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> >
> >
> >
>
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>
>
>=20



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