ID 320 – LIGHTING\ACOUSTIC\HVAC Done by: Amjad AlFawaz Top Lighting ID 320 – LIGHTING\ACOUSTIC\HVAC Done 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

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 4. Place skylights near walls 5. Use interior reflectors to diffuse the sunlight.

6. Use exterior shades and reflectors. 7 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

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