Retainer wall: I am planning to have a low 5 course 9-inch wall (can be either Flemish or Flemish Garden Wall bond) built to enclose two sides of a small patio, using old imperial-size local bricks. I wish to have three Flemish-bond attached piers, 3 courses higher; one at the square return and to stop two ends (for two openings). Please could anyone explain if it is practical or possible, (and above all 'honest') to have properly-bonded piers projecting just a quarter-brick on both sides of the 9-inch wall, or say half-brick on only the outside of the wall? I need a diagram to show the brick pattern, and any closers, in the two essential courses; one pair of such courses for the quoin pier, and one pair of such courses for the exposed end-piers. The diagrams need to prove there are only minimum straight (vertical) joins between the two courses. It would be useful to know which of the parts of the solution are either 'through' or 'stopped' walls.