Here's a Q2 demo styled column.
9 brushes, 54 faces
columns.zip - bushboy.
Here's three more columns created using vertex manipulation.
column1.map - 5 brushes, 42 faces
column2.map - 3 brushes, 17 faces
column3.map - 4 brushes, 48 faces.
column.map - bushboy.
5 brushes, 50 faces.
Eight columns can be used with an addition of
either 80 brushes or 640 faces at a middle
R_SPEED of average 380, depending on design efficiency.(grid 16x16 shown)