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İlkim Architects

Designing with the sun path: grounding massing decisions in data

Much of a building's energy use is decided in the first sketch, the moment the mass is positioned against the sun.

By Kurucu Ortak1 min read

Designing with the sun path: grounding massing decisions in data

Much of a building's energy use is decided in the first sketch.

Why the sun path?

In Istanbul the noon sun stands at about 72° on 21 June and around 25° on 21 December. That difference means an eave that blocks summer sun can admit winter sun.

Process

  1. Draw the site's annual sun path diagram.
  2. Model the shadows of neighbouring buildings hour by hour.
  3. Compare massing options for thermal load and daylight.

The live model on our home page is a small demonstration of this approach.

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