How To Build A Pitcher's Mound. Walk around the stake in a circle, keeping the string pulled tight, spraying landscaper’s paint to mark the circle as you go to create the outline of. Remember, the mound needs to slope properly.
Tamp the clay to a firm but level surface. As you get ready to construct the mound, use the transit and laser (or string lines) to ensure home plate, the pitcher's mound, and second base are accurately aligned and that everything is square. Repeat steps 2 and 3 until the new surface is level with the old surface.
The flat section with the rubber is.
Build in 2″ lifts, fully compacting with vibratory plate compactor or roller. When the pitcher's front foot lands on the slope of the mound, the pitcher has more power behind the ball. Since the rubber is 10” higher than the home plate, the plateau should be level with the rubber and span an area of 5’ by 3’. If building a fully clay mound, dump clay and spread to shape.