TOP LIGHTINGID 320 – LIGHTING\ACOUSTIC\HVACDone by: Amjad AlFawaz

Top Lighting Skylights Monitors Clerestories

Provide high quality and high quantity illumination over large area.

Not workable in multistory buildings Doesn’t satisfy view and orientation

Top lighting should supplement and not replace windows.

Skylight Horizontal or slightly sloped openings in

the roof.

Direct sunlight needs to be diffused for better visual performance and reducing glare.

Skylight face the summer sun more than winter and collect more heat in summer problem

Glare and heat

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Skylight Strategies 1- Skylight Spacing

2- Use splayed openings for better light distribution.

3- Place the skylight high in a space.For light to diffuse and reduce glare

4. Place skylights near walls

5. Use interior reflectors to diffuse the sunlight.

6. Use exterior shades and reflectors .

7. Use steeply sloped skylights to improve the summer/winter balance.

8. Use sunlight for dramatic effect.

Clerestories Monitors when the window face two

sides

Light Scoops the window face one direction and reflect light with the opposite side

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Vertical clerestories has the characteristics of windows rather than skylights

Facing south: collect more sunlight in winter than in summer, can be shaded easily

Facing north: low but constant light with no glare

West and east are to be avoided ;receive more summer sun than winter and hard to shade

Advantage of clerestories diffued light; the result from light reflected off the ceiling

Disadvantage no view

Clerestory strategies 1- Orientation. Facing south: collect more sunlight in

winter than in summer, can be shaded easily

Facing north: low but constant light with no glare

West and east are to be avoided ;receive more summer sun than winter and hard to shade

2-spacing.

3-reflective roof.White reflective roofs to collect more sunlight

4-suncatcher baffles.

5-reflective interior walls.

6-diffusing baffles.

Other daylighting techniques Light wells or shafts

Other daylighting techniques Tubular skylight

Outdoor shading

Membrane

Awnings

pergolas

Perforated screens