bond beams

Let's talk about really big boulders - the five- to eight-foot kind that weigh in at two to five tons apiece - and how they should be integrated into watershapes.   The whole process of placing these big boulders begins with the design of the pool and relates to the kind of scale you're trying to achieve.  Big boulders make other features seem small by comparison and can often overwhelm (rather than accent) a design if