kitchen bath lighting
Download
Skip this Video
Download Presentation
Kitchen & Bath Lighting

Loading in 2 Seconds...

play fullscreen
1 / 87

Kitchen & Bath Lighting - PowerPoint PPT Presentation


  • 321 Views
  • Uploaded on

Kitchen & Bath Lighting. A good lighting design should:. Look good – both people and design space Provide the proper amount of light in every room Be built and constructed within budget, code, and other constraints in mind Be environmentally responsible

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Kitchen & Bath Lighting' - medwin


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
a good lighting design should
A good lighting design should:
  • Look good – both people and design space
  • Provide the proper amount of light in every room
  • Be built and constructed within budget, code, and other constraints in mind
  • Be environmentally responsible
  • Respond to the architecture and interior design
  • Produce good color
  • Achieve the desired mood of each space
  • Allow lighting control
slide9
ambient

decorative

lighting concepts
Lighting Concepts
  • General Lighting
  • Task Lighting
  • Workplane
  • Distance
  • Footcandle
  • Lumen
  • Candlepower (Candelas)
  • Watts
  • Lamp Data Tables
lighting concepts general lighting
Lighting Concepts general lighting
  • Every room must have enough illumination to navigate through it.
  • The amount of light will vary depending on the activities performed in the room.
  • General lighting is measured at the workplane level. If there is no workplane like in the livingroom it is calculated at 30” above the floor.
  • General lighting is measured in “footcandles”
lighting concepts general lighting22
Lighting Concepts general lighting
  • Even light distribution is the key to great general lighting. Fixture placement and spacing must be accurately placed based on the lamps cone of light.
slide23
General Lighting

General Lighting

lighting concepts task lighting
Lighting Concepts task lighting
  • Working at the sink
  • Working at a desk
  • Working at a prep area
  • Reading
lighting concepts workplane
Lighting Concepts workplane
  • Workplane – The actual or implied surface on which work happens

Distance = Lamp Ht. –workplane height

Distance = 96”-36” = 60”

lighting concepts footcandles
Lighting Concepts footcandles

How do we measure the light on a work surface?

  • Footcandle – a unit of measurement that describes the amount of light on a surface, workplane, art, etc.
  • Lux – The European Footcandle

Lux = FC x 10.76

FC = Lux x .0929

lighting concepts footcandles27
Lighting Concepts footcandles
  • Sphere w/ 1 foot radius
  • 1 SF of sphere surface
  • 1 Footcandle is the amount of lighting falling on that surface
  • There are 12.57 of these one radius square curved planes in any sphere.
  • They are known as Steradians
lighting concepts lumen
Lighting Concepts lumen

Let’s talk about another form of measurement in lighting

  • Lumen – a unit of measurement defining the quantity of light a lamp produces.
  • In order to achieve the proper amount of footcandles necessary to illuminate a work surface we must know the strength of the light source.
  • Only then can we determine how many are needed and how far apart they are spaced.
lighting concepts candlepower
Lighting Concepts candlepower
  • Candlepower – the measurement of a lamps intensity, but only if it is directional
slide31
5’

144 footcandles

50 footcandles

640 footcandles

lighting concepts beam angle
Lighting Concepts beam angle
  • A directional lamp focuses or redirects its light energy into a cone emanating from a lamp’s lens where it is measured in candlepower.
  • The center of the cone has the most intense light
  • The edges have the least
lighting concepts watts
Lighting Concepts watts
  • Wattage tells us how much power or energy is burned by a lamp
  • Wattage tells us nothing about the amount of light a lamp can produce
  • A 60 watt PAR38 lamp will have ~ three times the candlepower when compared to a 75 watt R40 lamp.
color and reflectance36
Color and Reflectance
  • Color Temperature
  • Color Rendition Index (CRI)
  • Reflectance
color temperature38
Color Temperature
  • Color temperature is measured in Kelvin
    • 10,000K appears blue
    • 1000K appears red
    • 3000K to 3600K is considered neutral
color temperature40
Color Temperature
  • Lower color temperature means warmer color
  • Higher color temperature means a cooler color
slide42
Cool colors

Warm colors

color rendition index45
Color Rendition Index
  • Color Rendition Index is a scale from 1 to 100 which describes the effectiveness of a light source in reproducing accurately, an objects color. 100 being the best.
  • The sun has a CRI of 100
  • The best lamps to use are ones with a CRI over 80
  • Incandescent lamps have a CRI of over 98
  • Fluorescents are the ones we want to be careful with
color and reflectance cri
Color and Reflectance cri
  • Typical 4 foot fluorescent tube cool white or warm white bulbs have a CRI of around 50 and 60 respectively
  • Color corrected fluorescent lamps are now available in 70 and 80 CRI and those with rare earth phosphorus reach 90
color temp vs cri
COLOR TEMP. VS CRI
  • Color Temperature describes how the lamp itself appears when illuminated.
  • CRI describes the effectiveness of a light source in reproducing accurately, an objects color.
all together now
All together now!
  • Lumens -
    • define the quantity of light
  • Candlepower
    • defines the intensity of light
  • Footcandles
    • defines the amount of light on a surface
all together now49
All together now!
  • Color temperature
    • describes how the lamp itself appears
  • CRI
    • describes the effectiveness of a light source in reproducing accurately, an objects color.
reflectance
Reflectance
  • Reflectance – is the amount of light which reflects off an object
  • This quantity of light is measured in “Foot-lamberts”
  • The amount of light that reflects off of objects in a room adds to the overall illumination
  • So, reflectance must be taken into consideration when determining the Footcandle requirements for a room.
reflectance53
Reflectance

Example – 10’ x 10’ kitchen

  • Ceiling reflectance -The ceiling color is white 80%
  • Wall reflectance

Determine the total wall area

10’ x 8’ = 80 x 4 = 320 SF

Divide the room into three predominate materials.

50% is cabinetry (~160 SF)

20% is windows and openings (~64 SF)

30% is wallpaper (~96 SF)

reflectance54
Reflectance
  • Next assign each material a reflectance
    • Natural maple cabinets = 60%
    • Windows & doors = 4 %
    • Dark green wallpaper = 15%
  • Next multiply each reflectance times its percentage of the total square feet
    • .60 x .50 = .30
    • .04 x .20 = .008
    • .15 x .30 = .045

Total = .353 The average wall reflectance is 35%

reflectance55
Reflectance
  • Floor reflectance – 100SF of warm gray slate – use medium gray (25%)

Average the totals:

Ceiling – 80%

Walls - 35%

Floor - 25%

Average = 47%

lighting spacing principles

Lighting Spacing Principles

Spacing Directional Lamps -

lighting spacing principles61
Lighting Spacing Principles
  • Calculating Beam Spread

Calculate H the distance from luminaire to 6” above work surface

With a typical 96” ceiling height and a work surface at 36 “ the distance would be 54”

B= 55°

H = 54”

2 (tan27.5° * 54) = ~56” = distance between luminaries

slide62
55 beam spread
  • 54” distance
  • 60 to work plane
let s work an example65

Let’s work an example

This one exists only in a perfect world!

96” Ceiling Height55º Beam Spread

another example

Another Example

This time from the real world

96” Ceiling Height55 Beam Spread

slide71
56

56

58 beam angle
58° Beam Angle

58/2 = 29

TAN29 = .5543

.5543 x 21 = 11.6411.64X2= ~24

15”

30”

15/27 = .5556

ATAN.5556 = 29º

29°x 2 = 58º

lighting the sink
Lighting the sink
  • Page 109 in Lighting Kitchens & Baths Made Easy

12”/54” = .2222

ATAN .2 = 12.53º

12.53 x 2 = ~25º Beam Spread

lighting measurements

Lighting Measurements

Footcandles Levels

Inverse Square Law

lighting measurements77
Lighting Measurements
  • Recommended base Footcandle Levels –
    • Page 48
  • Adjustment Factors –
    • Page 49
lighting measurements78
Lighting Measurements

Inverse Square Law

  • The greater the distance the lamp is from the object or workplane, the more powerful it will need to be
  • The I.S. Law allows you to establish the appropriate lamp candlepower for any distance.
lighting measurements79
Lighting Measurements

Three factors:

Candlepower (Cp)

Footcandle (Fc)

Distance (D)

If you know two factors you can calculate the third.

inverse square law
Inverse Square Law

Candlepower =

Footcandle =

Distance =

inverse square law82
Inverse Square Law
  • Distance = 5’
  • Footcandles = 40
  • Candlepower =

1000

?

inverse square law83
Inverse Square Law
  • Distance =
  • Footcandles = 40
  • Candlepower = 1000

?

5’

bathroom vanity lighting
Bathroom Vanity Lighting
  • Side lighting recommended
  • 30” apart
ad