Abstract: A trench drain apparatus includes a trench body and an insert that can be assembled to the trench body to adjustably locate a trench drain hole in the insert relative to a footprint of the trench body. This allows adjustment of the trench drain hole at the installation site, yet takes advantage of pre-manufactured components. An upper surface of the trench body may receive an optional waterproof membrane clamped onto the sealing surface by a clamp ring. The insert can be rotated 180 degrees prior to installation to provide two different drain hole locations, or can be cut on site at one or both ends so that the drain hole ends up at desired location optimally matching a pre-existing drainage pipe opening. Methods related to the above are also provided, including adjusting the insert to locate the trench drain hole at an optimal location.