These large shelves make use of potentially unused space below a staircase and draw attention toward its unusual design. With their irregular angles, stair landings and attics are also good candidates for floor-to-ceiling built-in bookshelves.
A French cleat is a way to hang heavy items onto walls. A single piece of wood is split in two at a angle. Alternatively, two pieces of wood are cut at angles to fit one on top of the other. Use a French cleat for mounting shelves and bookcases on a wall.