Common terminology used to describe tree grates

This glossary provides a list of terms and definitions for tree grates.

Reliance Foundry tree grates protect greenspaces within the community while enhancing surrounding urban infrastructure. Reliance Foundry tree grates are ADA approved and act as a safe extension of the sidewalk. Component parts fit together seamlessly for a refined appearance and require minimal maintenance.

Tree grate terms

Americans with Disabilities Act (ADA)

ADA is an American civil rights law passed by congress in 1990. It prohibits discrimination against disabled individuals in various areas of public life, including transportation and all places open to the general public. ADA-approved tree grates must conform to ADA standards for size and shape of grate openings.

Gray cast iron

Gray cast iron is a type of cast iron that has a graphitic microstructure and conforms to ASTM A-48, Class 35 or higher. It experiences less shrinkage compared to other ferrous metals, has high corrosion resistance, and good machinability. It is a durable material for manufacturing high-quality tree grates.


Hardscape includes the inorganic built elements in a landscape, including concrete, metal, glass, or stone. Walkways, driveways, walls, and stairs are the most common examples, yet hardscape can also be ornate and decorative, or it can be functional to enhance the horticultural elements. It is installed to protect greenspace, provide drainage, and improve accessibility.

Tree Grate

Tree grates are protective coverings for tree bases, including tree roots and the tree pit growing area. Tree grates feature narrow slits to allow for moisture, light, and air to pass through. They protect trees from urban traffic and allow them to thrive and grow.

Two-Piece Tree Grates

Two-piece tree grates are tree grates made of two halves. They can be bolted together on the underside using bolt slots. Two-piece tree grates make for easy access, placement, and removal while providing excellent stability.