sapas

As watershape designs become increasingly creative and complex, the demand for more precise methods of engineering their structures has grown as well.  To meet that need, observe Ron Lacher and Aaron Cowen of Pool Engineering, experts like them are turning to advanced three-dimensional modeling technology - systems so sophisticated that they make it possible to develop plans for daring projects such as they one they describe here.      It's easily the most sophisticated watershape structure we've ever engineered. The pool/spa combination, not yet built, will rise some 50 feet above grade on a cliff behind a home in the densely populated Hollywood Hills near downtown Los Angeles.  As conceived, the vanishing-edge pool will sit a full ten feet below the spa in a complex monolithic structure.  Supporting the entire affair will be