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  2. WHAT IS LIGHT ? Light is a form of energy without which there can be no vision. When light strikes an object, it may be reflected, absorbed or allowed to pass through.
  3. IMPORTANCE OF LIGHTING It has a definite emotional effect and is stimulating Lighting plays both a functional and aesthetical role in a hotel It enhance the guest experience It changes the mood of a room Artificial light can produce a harmonious effect throughout a room in addition to its basic function of providing visibility It brings out ambience and quality of experience in the hotel
  4. TYPES OF LIGHT Light can be classified in many ways Source based classification Based on the way light is directed on the object Function based classification
  5. Light Artificial Incandescent fluorescent Natural SOURCE BASED CLASSIFICATION Natural light: the bright radiant energy of the sun, day light is a major determining factor in the design of the hotel guestroom and house Artificial light: well planned artificial illumination help us to see without strain and help to prevent accidents. It can be further classified depending upon the way it is produced and the way it is used Incandescent and Fluorescent lights
  6. BASED ON THE WAY LIGHT IS DIRECTED ON THE OBJECT Direct light: These kind of lights comes from source such as sealing fixtures, that shed light downwards, or from lamps with translucent shades spreading light in all direction Indirect lighting: this is usually from concealed sources in alcoves, cornices or valances. It is softer than direct lighting, but more costly in installation and operation Diffused lighting: when light fittings are completely enclosed as with some globes and sealing panels, the light is diffused since it passes through the glass or plastic Semi indirect lighting: it is possible to have some light passing through a diffusing bowl and some reflected off the sealing where the fixture is open on top
  7. Incandescent light: light is produced by heating any material, usually metal, to a temperature which it glows. Typical incandescent bulbs have a tungsten filament in a sealed glass container. Advantage: bulb costs less than the fixtures and tubes used in fluorescent or discharge types Fluorescent light: are a luminescent or cold source of light. A glass tube with an inside coating of fluorescent powder is filled with vaporized mercury and argon. The ends are then sealed with two cathodes. Fluorescent tubes comes only in straight or circular shapes. they consume less energy than incandescent bulbs It can be further classified into low pressure and high pressure lamps depending on the pressure inside the tube
  8. METHODS OF LIGHTING There are two methods- Architectural and Non Architectural lighting Architectural and Built-in lighting: it supplies lighting that is functional and unobtrusive And is particularly good fro contemporary rooms. It may be achieved in following ways:- •Valance lighting •Cornice lighting •Cove lighting •Track lighting •Soffit lighting
  9. FUNCTION BASED LIGHTING General or area lighting: this illuminates the room more or less uniformly. It brings the design and colours of the whole space to equal attention. It minimize the bulkiness of furniture, the dark of shadows and harsh contrasts Local or specific lighting: for specific activities and specific locations. Divided as two task lighting and accent lighting. Safety lighting: it is a type of bright lighting used for safety reasons
  10. A horizontal fluorescent tube is placed behind a valance board, casting light upward so that it reflect off the ceiling and also downwards to shine on the drapery, thus producing both indirect and direct lighting Valance lighting
  11. A cornice is installed under the ceiling, with a fixture hidden beneath so as to direct light downwards only. This can gives a dramatic effects on drapery, picture and wall coverings Cornice lighting
  12. Cove lighting This consists of placing a continuous series of fluorescent tube in a groove along one or more walls of a room, about 12 inches from the ceiling. The light reflects off ceiling and bathes the room in indirect light.
  13. Track lighting Plugmold-type wire mould strip or track lighting consists of lamps fixed to the ceiling or wall in an array to offer great variety. One strip often holds spotlight, floodlight, and even hanging fixtures that may be turned around to follow furniture placement.
  14. This refers to a built-in-light source under a panel. It may be fixed to a ceiling or under a cabinet. Soffit lighting is often used a sink or other work areas. Soffit lighting
  15. These types include various fixtures and lamps. •Ceiling fixtures •Wall fixtures •Portable lamps Non- Architectural Lighting
  16. A variety of lighting is necessary in most rooms and public areas. Provide first for efficiency and safety. You can customize the lighting features to highlight a room’s appealing aspects, enhance colors, spark drama and interest, change moods and cosy up too large spaces LIGHTING PLANS
  17. ENTRANCE AREAS AND LOBBY The entrance of any establishment should look inviting and the lighting should be in keeping with the character and atmosphere of the place. In a large area chandelier, cove lighting, wall brackets or pelmet type can be used to provide general illumination.
  18. RESTAURANTS AND PUBLIC AREAS •Atmosphere of lounge should be one of comfort and restfulness •Scultpures or paintings can be highlighted using spotlights •Concealed lights are used to dramatize foliage and around water features •Chandeliers look elegant in banquet hall
  19. GUESTROOMS AND CORRIDORS •Guestrooms do not necessarily require general lighting •There should be adequate lighting in different parts of the room •Switches must be easily accessible •Bedside lights •Desk lamp
  20. •There should be vapur proof fittings •Switches should be outside the bathroom •Bare bulbs around mirror •Adequate lighting must be provided in the shower area •A plug point must be provided for operating shavers and hair dryers as well Bathroom
  21. •Subdued lighting •Gloom should be avoided •Light fittings in the corridors should not be spaced further apart than 1 ½ times their distance from the floor •Stairs should be well lit to prevent accidents •For safety reasons lights for corridors, stairways, and fire exits should be left on during night as well •There should be an emergency lighting system
  22. CONSIDERATIONS FOR A GOOD LIGHTING SYSTEM •It should fully utilize the potential of daylight when available •It should be energy efficient •It should have good design and durability •There should be ease of replacement of fixtures and bulbs •It should be easy to maintain •The amount of light needed for a particular area should be decided on and optimized by the plan