In the parlance of those who know best, it's time to discuss "mud" - the concrete material out of which most watershape shells are made. Mud enters the scene after the steel, plumbing, electrical conduits and forms have been placed and, in some jurisdictions, all work to that point has passed careful inspection. The concrete itself can take any of four forms: concrete block or poured-in-place concrete (neither of which is used very often), or gunite or shotcrete (far more commonly used). In my three decades of building watershapes, I've worked with all of these materials. If a very specific set of circumstances calls for the use of either concrete blocks or poured-in-place concrete, I will do so, but whenever there's a choice I will always choose to work with shotcrete. Before I get to the reasoning behind this preference, however, let's roll through all of the possibilities and how they are most effectively used in watershape construction.
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