Here is a plan for an easy to build sandbox that is approximately 2 ft deep and the bottom is left open to insure proper drainage.
Sandboxes are easy to build with the right instructions and they become a play area where children can express their creativity. You will find lots of sandbox plans below to help you build one.
To build a sandbox, first you need to know what shape you want it to be and buy the required lumber. Using L-shaped metal brackets on each corner, you can create the desired frame. If you want a bottom on the sandbox, you will want to use weed block fabric or just leave the bottom open to the ground below it.
Next, you might want to add a bench by simply placing a piece of wood on one of the corners and screwing it down. You can also make a cover out of plywood or other scrap wood cut in the same shape as your sandbox.
To finish, go over the sandbox looking for any sharp points that could scratch or cut and then fill it with play sand.