M.Sc Thesis

M.Sc StudentSapiro Morris
SubjectA Model for the Analysis of Mutual Shading Inside a Cluster
DepartmentDepartment of Architecture and Town Planning
Supervisor PROFESSOR EMERITUS Edna Shaviv


The objective of this project is to develop a model which is capable of analyzing mutual shading inside a cluster of buildings. The first part of the model deals with the analysis of exposure to the sun from a qualitative point of view. To achieve this goal, one can create perspective drawings of the designed buildings in which hidden lines are removed, and in which the viewpoint coincides with that of the sun position. In these perspective drawings, places and buildings we see are those which are sunlit, those hidden from us, are in the shade.

In light of this information, the architect can efficiently plan the varying functions of spaces among building: playgrounds, sidewalks, areas-for rest or parking, as well as the location of the solar passive collectors.

The second part of the model concentrates on the analysis of sun insulation and sun shading from a quantitative point of view. An exact quantitative evaluation of direct solar energy reduction is imperative for proper design of passive solar collectors, as well as buildings openings. Furthermore, the functional designation of spaces can be done more efficiently when exact quantitative evaluation of solar energy on the surfaces is known.

The model can calculate the hourly reduction coefficient of solar direct radiation for any given date and hour, on any surface, and generates a graphic representation of shade on this surface.

The proposed model makes use of commercially available software for three-dimensional representation. This enables the user, to take advantage of current 3-D graphic software, such as easy editing of objects and varying perspective viewpoints.

This model serves as the link between two types of software which have already been developed and are currently being used by architects. This link enhances both the limited graphic representation software, and the energy simulation models, creating one cohesive unit of CAD in the field of energy in architecture.