Gutter system
The elevated perimeter overflow splash pad simply spills over this raised rim. On the deck side, the water flows into this concealed gutter. The gutter returns this water back to the pool at each corner. The elevation of this gutter is slightly above the pool’s operating level to ensure that it positively drains. This is one of the biggest mistakes that I observe when people try to mimic this detail — lack of gutter waterproofing, lack of any finish at the ends (where bathers can look into the gutter) and not paying attention to the critical elevations. This gutter simply would not drain if it were at or below the pool’s water level.
The brown granite was bull nosed, so that the co-efficient of friction over the lip was minimized. It also reduced the sharpness of the edge for safety.