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

2. Top Lighting Skylights Monitors Clerestories
Provide high quality and high quantity illumination over large area.

3. Not workable in multistory buildings
Doesn’t satisfy view and orientation
Top lighting should supplement and not replace windows.

4. 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

6. Skylight Strategies
1- Skylight Spacing

7. 2- Use splayed openings for better light distribution.
3- Place the skylight high in a space.
For light to diffuse and reduce glare

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

11. 6. Use exterior shades and reflectors. 7
6. Use exterior shades and reflectors . 7. Use steeply sloped skylights to improve the summer/winter balance.

12. 8. Use sunlight for dramatic effect.

14. Clerestories Monitors  when the window face two sides
Light Scoops  the window face one direction and reflect light with the opposite side

18. 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

19. Advantage of clerestories  diffued light; the result from light reflected off the ceiling
Disadvantage no view

20. 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

21. 2-spacing.

22. 3-reflective roof. White reflective roofs to collect more sunlight

23. 4-suncatcher baffles.

24. 5-reflective interior walls.

25. 6-diffusing baffles.

26. Other daylighting techniques
Light wells or shafts

27. Other daylighting techniques
Tubular skylight

28. Outdoor shading
Membrane

29. Awnings

30. pergolas

31. Perforated screens