Structural Strategies

When Pools Crack
Even though many swimming pools look similar in lots of fundamental ways, every one of them is actually quite unique. From soil and groundwater conditions or the specifics of their structural designs to the ways in which they have been installed, water-containing vessels of all shapes, types and sizes are, in fact, subject to a wide array of site- and workmanship-specific variables that can influence the way their concrete shells will perform through the years. When a watershape cracks, any number of things might have gone wrong.  To the owner of a watershape, of course, such cracking is obviously a source of concern.  The fix is often expensive, and it's not at all unusual for contractors to defend their work as a means of avoiding the necessity of paying to remedy the situation. This can leave the owner in a very difficult position in which experts must be called in to determine the true cause of the problem - and then he or she might be left alone to pressure the contractor who installed the vessel to take responsibility and
Ground Work
There's no room for guesswork when it comes to structural engineering, says Ron Lacher of Pool Engineering, Inc., and that's especially true when it comes to concrete structures designed to contain water.  Here, he opens a series on structural fundamentals related to watershapes by defining the need for precise structural planning and careful attention to workmanship - the keys, he says, to achieving a project's aesthetic and functional goals.  Despite the apparent intricacy of any good set of engineering drawings and contrary to what many people think, structural plans for concrete watershapes are pretty cut and dried. At the most basic level, the art and science of structural engineering deals with predictable forces placed upon structures and with the construction techniques and materials required to counteract those forces.  The basic mathematic calculations are straightforward stuff, and everything runs in accordance with building codes that