Abstract: A closed modular ditch liner includes a plurality of closed liner sections, a plurality of covers, and at least one alignment key. The cross section of each closed liner section includes at least one trough contour and a single cover retention lip formed on a top end of each side thereof. Each cover is laterally retained between the two cover retention lips. A key slot is preferably formed on at least one side of the closed liner section to receive a single alignment key. However, alignment keys that do not require a key slot may also be used.

Abstract: An open modular ditch liner includes a plurality of open liner sections and at least one channel alignment key. The at least one channel alignment key is sized to receive a thickness of two adjacent open liner sections. An erosion barrier insert may be placed between the ends of two adjacent open liner sections. A radius liner insert may be placed between the ends of two adjacent open liner sections. The width of an open liner section may be expanded with a plurality of side connection keys and a plurality of expandable liner sections. A plurality of pitch expandable liner sections may be inserted between the plurality of open liner sections and expandable liner sections. At least one side of the plurality of open liner sections and expandable liner sections may be mitered.

Abstract: An open modular ditch liner includes a plurality of open liner sections and at least one channel alignment key. The at least one channel alignment key is sized to receive a thickness of two adjacent open liner sections. An erosion barrier insert may be placed between the ends of two adjacent open liner sections. A radius liner insert may be placed between the ends of two adjacent open liner sections. The width of an open liner section may be expanded with a plurality of side connection keys and a plurality of expandable liner sections. A plurality of pitch expandable liner sections may be inserted between the plurality of open liner sections and expandable liner sections. At least one side of the plurality of open liner sections and expandable liner sections may be mitered.

Abstract: An open modular ditch liner includes a plurality of open liner sections and at least one alignment key. A substantially concave shape is formed in a top of each open liner section. At least one key slot is preferably formed on at least one side of each open liner section to receive at least one alignment key. The key slot may have an interference fit. An angle may be formed on at least one end of each open liner section. A key block with the same length of a open liner section may be used as an alignment key. A riser block may be used to terminate at least one side of at least one open liner section.

Abstract: A modular ditch liner have open and closed embodiments. An open modular ditch liner includes a plurality of open liner sections and at least one alignment key. A substantially concave shape is formed in a top of each open liner section. A key slot is preferably formed on at least one side of each open liner section to receive a single alignment key. A closed modular ditch liner includes a plurality of closed liner sections, a plurality of covers, and at least one alignment key. The cross section of each closed liner section includes at least one trough contour and a single cover retention lip formed on a top end of each side thereof. Each cover is laterally retained between the two cover retention lips. A key slot is preferably formed on at least one side of the closed liner section to receive a single alignment key.