INTERIOR DESIGN INTERIOR DESIGN by John F. Pile by John F. Pile

Chapter 10: Lighting

lighting

Dr Yasser Mahgoub

Vision &lighting

•Light level•Control of Brightness Contrast and Glare•Contrast and diffusion•Economic Issues

considerations for good lighting

Daylight

•Admitting Daylight•The nature of daylight is determined by the architecture of the space.

•Controlling Daylight•Multiple Glazing•Orientation •Window Treatments

Artificial Light

Planning Lighting

•Determine the general aims in term of character and atmosphere•Consider the specific Purposes for which lighting is required•Ascertain the intensity level for the proper vision and balance against these energy and first installation costs and other factors to decide on lighting type.•Select fixtures based on general aims and specific needs•Place fixures

Lighting needs

•Task lighting•General lighting (ambient light)•Special lighting (accent light)

Lighting needs

•Levels of illumination (candle powe r, lume ns)•Brightness Contrast (reflectance)•Lighting for the aging population

Special Purpose Light

•Offices•Healthcare facilities•Restaurants•Retail stores and show rooms

Selection of lighting

•Incandescent light•Fluorescent light•High intensity discharge light \•Light-emitting diode (led) light •Fiber-optic light•Other light sources•Color characteristics of artificial lighting

Selection of lightingEconomic issues of Light Selection:

Cost of fixtures, installation, maintenance, repair, consumption, air conditioning ( to offset heat produced), saving in heat cost.

Comparison equation based on energy consumption: total wattage of lighting = Watts per square foot Floor area in square feet

Fixture Selection

Selection Depends on many factors: Type of light desired for a space Cost Look desired Maintenance Architectural or portable

Fixture Selection

Architectural & portable lighting

ARCHITECTURAL Lighting is fixed (recessed or concealed) into the structure of the building

PORTABLE LIGHTING includes movable lighting devices that are plugged into outlets

Fixture Selection

Types of light produced

CONCENTRATING or beaming, usually from a point source in one/many directions

DIFFUSING that scatters light in many directions

Fixture Selection

Types of light produced

The way fixtures direct their light output can be evaluated by LIGHT DISTRIBUTION (PHONOMETRICS) CHART. (fig)

Light fixtures designed as ‘bright spots’ create excessive brightness contrast that causes vision problems should be avoided.

Fixture Selection

Types of fixtures, Floor Table &Des k Lamps

Shaded incandescent LampsDesk lampsGlobe lampsReflector lampsUplights or Torcheres

Fixture Selection

Types of fixturesWall-Mounted Units

Wall bracketsWall-mounted Reflector LampsWall mounted Uplights or sconces

Fixture Selection

Types of fixturesCeiling UnitsDownlightsEyeball & wall-washer adjustable unitsHanging fixtures/ chandeliersSurface mounted & recessed luminaresTrack lighting

Fixture Selection

Types of fixturesBuilt-in Lighting

Cove LightingLuminous CeilingsIntegrated ceiling systems

Miscellaneous TypesClip-on Photo LightsLuxo lampsAntique reproductions

FIXTURE LOCATION & SPACING

Types of fixturesCalculating number & location - with architectural lighting use specific calculations to provide

illumination level of selected fixtures.

switchesDimmersPhoto sensors

Local Case studies

Marina mall bridge

Daylight

Local Case studies

Marina mall Asha s

Artificial light

Local case study

Marina mall asha’s