Outdoor structures should be supported by basic foundations which are called footings. Footings are an essential part of building an outdoor structure and help to eliminate settling and slippage. Footings can also help protect wooden posts and beams from direct contact with the earth, minimizing the possibility of rot and insect damage, therefore extending the life of your outdoor project. Posts and beams that do come into contact with the earth have a tendency to rot more quickly, eventually weakening the structure.