The document discusses urban structure and grain, describing how cities are composed of infrastructure, plots of land, and building types. It provides examples of different block sizes and configurations from the 1859 expansion of Barcelona which used 120m square blocks, as well as the older, more irregular blocks of the original medieval city. Additional examples shown include the small, permeable grid blocks of Brindleyplace in Birmingham and how its design was inspired by the tissue of cities like Amsterdam and Venice. Legible urban structures discussed include canal spines, street grids, and neighborhood squares.

1. Urban structure, scale and grain Joe Holyoak

2. The urban fabric, composed of 1. infrastructure, 2. plots and 3. building types

3. Urban grain composed of street blocks of different size and configuration

4. The 1859 Barcelona expansion (the Ensanche), composed of 120m square blocks

5. Barcelona; a view in the Ensanche

6. The old city of Barcelona; organic mediaeval growth produces fine-grained irregular blocks

7. Barcelona; a view in the old city

8. Brindleyplace, Birmingham; a permeable loose grid of small blocks, which are mostly each composed of one building

9. The analytical technique of tissue transfer; Brindleyplace as a piece of Amsterdam

10. The analytical technique of tissue transfer; Brindleyplace as a piece of Venice

11. Legible structure; a canal spine (Jordaan, Amsterdam)

12. Legible structure; a grid of streets (the Colmore Estate, Birmingham, 1778)

13. Legible structure; the neighbourhood square (Placa del Sol, Gracia, Barcelona)