الفهرس 
Toplighting and Wide Span SpacesOnly 14 pages are availabe for public view
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Abstract
By the development of technology that allowed huge enclosed spaces to be constructed,
the issue of how to daylit these spaces was necessary. Toplighting was the suitable
solution to provide even distribution of daylighting performance inside wide span spaces.
Different types of toplighting was created to meet the design and the function
requirements. However in wide span spaces as in sport halls, many designers neglect
daylighting for the sensitivity function needs. The thesis aims at identifying toplighting
concepts and configurations that can be used in wide span spaces like sport halls to
create a pleasant environment. The research concentrates on sawtooth roofs as a type of
toplighting and investigates the effect of using different shading techniques integrated with
sawtooth roof such as: louvered overhang, internal louvers or baffles and external louvers
The thesis also investigates the effect of changing the roof configuration on daylighting
performance of toplighting. The research tries are chosen under the sunny clear sky of
Cairo, Egypt.
This thesis consists of three parts and ends with the conclusions and recommendations.
The first part (chapter 1) investigated the different types of toplighting and its design
considerations. It also discussed the types of shading techniques. In the second part
(chapter 2) four performance metrics were specified. These metrics are Daylighting
Availability, Spatial Daylight Autonomy (sDA), Annual Sunlight Exposure (ASE) and
Daylight Glare Probability (DGP). A standard multi-sport hall was selected in Cairo as a
case study with sawtooth roof with different design variants and its daylighting
performance was analyzed. In the third part (chapters 3 and 4) the effect of using shading
techniques was studied. Moreover, an investigation was conducted on the effect of roof
configuration on daylighting performance. Parametric design was used for modeling using
Grasshopper and Rhinoceros 3D modeling software. Diva-for-Rhino a daylighting
simulation plug-in was used to interface Radiance and Daysim for annual daylighting
simulation and illuminance calculation.
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The results provide the daylighting performance of different design variants, different
techniques and parameters. Results present design guidelines for toplighting in multi-sport
halls under sunny clear sky of cairo.