Well, here's the way I do it for diagonal faces:
1. Make shape (duhhh).
2. Make 1 large square 2D rectangles. Don't make it on the model but next to it.
3. Highlight the rectangle and copy it. Move the copy above the original between 10 and 13 feet.
4. Copy the rectangle above the first one. Move the copy 1 to 3 down on the blue axis.
5. Copy the two top rectangles and move them up 13 feet.You can also highlight the two top rectangles and so you don't have to count just use the move tool to click on one of the corners of the original rectangle and copy the highlighted ones by moving the mouse to the corner of the 3rd rectangle.
Quote:
------ <Highlight
------ <Highlight
------ < Using the Move/Copy Tool, click on a corner.
------ < This corner. <<<<<<
------ ^
^
------ <Move tool + Ctrl=copy. Move the mouse to ^
|
6. Repeat.
Did I explain it right?