How to build an artificial rock form?

There are a number of different methods to build a form for your artificial rock. For the purposes of this instructional guide we will be building a "non-structural" form since the finished product is not intended to be load bearing. A rock climbing wall or similar structure which absolutely must have structural integrity to avoid liability and safety issues should not be attempted by anyone but professionals. Structural form design would involve a complex grid work of custom bent steel reinforcement making a basic skeleton of massive strength. This would be then subject to approval by building inspectors and structural engineers. For non-structural we will be using Styrofoam to create our basic void which is designed not to provide long term support, but short term support until the concrete has cured. It can be left in place as added strength, or removed to create a hollow artificial rock commonly used for landscaping. Either way the overall strength is derived from the concrete ...  more