<强>干放置石是，毫无疑问，砖石的最早形式;它由简单堆叠的天然宝石，一个在另一个之上的，没有灰浆。作为石材切割工具开始被用于工作的石头，初干石匠开发铺设的石头，使结构更加稳定，耐候性的技术。Egypt's great pyramids are the largest and most recognized dry stone structures, but there are numerous examples of ancient dry stone masonry all around the world that are still stable and useful after hundreds or even thousands of years.