Paving - plan and section

After drawing some paving bond patterns I then decided to do a section, to show the materials beneath the paving. I used Landscape Detailing volume 2 by Michael Littlewood to help sketch this. 

First I drew the plan view of basic stack bond layed concrete pavers. After drawing this I could then extrude the lines of the grid id created upwards to project an accurate section view of Pedestrian paving.

I found using a red pencil to make construction lines really helped as they are very faint and can be rubbed out after.