Foundations? in Architecture Posted September 26, 2008 I use wall types for each of the stem and footings (I think it was an idea from one of the Peter's), on a Foundation Layer. Or set up a Foundation and a Footing layer, so the depths and wall thicknesses are set ahead of time. Make a wall type of your typical foundation walls and footing widths (make them in the Library file so they are available everywhere) and draw one, copy/paste-in-place to the other layer, and change the wall type. Or draw new, whatever you prefer. To do them together would be a cool tool to have (NNA?) but this allows tailoring. You could extrude the "inverted-t" form, but why bother? As a note, whenever I make up wall types for projects (I do a lot of renovations to old stuff) I eventually copy and paste them to the Library file to use later. Just remember to save it when we get herded into the new versions.