Pitching Mound Maintenance FAQs

Q: What is the standard height of a high school mound:

A: A regulation pitching mound should be 10 inches higher than the surface of home plate.

Q: What is the standard height of a little league mound:

A: A Little League pitchers mound should be 6 inches in height.

Q: What is the diameter of a high school pitchers mound:

A: A High School pitchers mound should be 18′ diameter circle.

Q: What is a proper slope for a high school mound:

A: Your front slope of the mound should start 6″ in front of the pitching rubber, and drop 1 inch for every 1 foot towards home plate.

Q: Why should I use unfired clay bricks?:

A: Although Mound Clay is great at providing stability and structure to your mound at depths of 1″-2″. Most Clay Bricks are 2 3/4″ thick, and have been compressed with high amounts of weighted pressure. This turns the clay into a very strong brick that will provide your mound or batters boxes with a solid foundation that will last much longer than any bagged material. If properly maintained clay bricks will provide a solid foundation for 2-3 years.

Q: I’m rebuilding our High School field mound. What points should I measure from when measuring out my pitching rubber?

A: When measuring out your pitching rubber for a High School field, you should measure 60′ 6″ from the apex of home plate to the front of your pitching rubber.

Q: Why should I use mound clay instead of infield soil for my mound?

A: Infield soils tend to have higher sand content, so your infield can withstand rainfall in the spring and won’t hard-pan in the summer. Higher sand levels keep your infield from compacting and creating this hard panning effect. However, this is why sand-based infield soils are actually bad for your mound. You need your mound to hold firm and compact, or else you will end up with divots in your high-stressed areas. Mound clay is great for your mound because of the clay’s ability to compact and hold up under stress throughout the course of a season. Most bagged mound clays are specifically picked by manufacturers to handle a higher stress load during a baseball season.

Q: How far in front of my pitching rubber should my table extend?

A: How far you extend your table in front of the pitching rubber depends on the size of the mound. For example, if you’re building a high school mound at 10 inches in height, your table will have the dimensions of 34″ x 60″. Therefore, your table should extend 6 inches in front of the pitching rubber before you start your slope. If you are building a Little League Majors/Minors mound, you’re dealing with a mound height of 6 inches, which means your table will have the dimensions of 17″ x 40″ and should extend 4 inches in front of your pitching rubber before you start your slope