The slope is about the full stride of a 6 foot major league pitcher. A suitable spot has to be selected in the backyard and it has to be made certain that the land is level. Dad's building next weekend. PORTABLE PITCHERs mound There are a few basic issues about backyard pitching mounds which must be initially considered. How to build a pitcher's mound in your backyard . As you add each layer, tamp or roll the soil. Building a pitching mound in your backyard Use an electric garden edger to carefully cut two to three inches deep around the edge of the sticks creating the outline of the mound Six inches from the front edge of the table is the pitcher’s plate (also called the rubber), which measures six inches deep by 24 inches wide. When deciding which portable mound to purchase, it is important to be aware of its sizing, durability, and how well it replicates a real. The turface helps keep the pitcher's mound moist without being slippery. It sports a 2...