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Rem Koolhaas - Seattle Library dwg 2D
Daegu Gosan Public Library Competition Entry / Group8,library scheme concept diagram

Gallery of Daegu Gosan Public Library Competition Entry / Group8 - 2

SEATTLE CENTRAL LIBRARY - OMA  The entire building is "public", but dedicated public space is the space inbetween program. Staggered.
Helsinki Central Library Competition Entry / AND-RÉ

Gallery of Helsinki Central Library Competition Entry / AND-RÉ - 22

spatial / bubble diagrams, also called programme. It shows what spaces the building needs based on the client's brief, and where each space is supposed to be located.
Lotus Towers / Enota  Computer generated visual representation of light in this building

Gallery of Lotus Towers / Enota - 3

Daylighting | Passive Strategies | UT Zero Energy House | University of Tennessee Knoxville
social interaction  herman herzberger - Google Search
This is another effective diagram in my opinion. The designer used proper colors to communicate meaning and the diagram shows simply how the basic form of the buildings was established. The diagram also shows why they decided to design the building this way, to connect views and paths.

Gallery of Vrbani Business Center / NFO - 6

sun path