I made this nifty raised planter for Ingrid. It's pretty tall, because bending over while gardening sucks. It holds 56 cubic feet of earth, less the space the posts take up, so that's just about 55 cubic feet (1.6 cubic meters).
It was my first time using carriage bolts. There are also two 3/8in threaded rods holding the front and back together
Most of the work was in the measuring and drilling of the holes. After that, it all went together pretty quickly.