These assets were made with tiling and reuse in mind. Most of the textures were midtone-white so that we could use a multiply color value to tone for each level accordingly. The white soft-pipe-lace texture was sculpted in zbrush. Remaining materials were a combination of Substance and Quixel.
The large grate model was part of a gameplay asset. The idea being that the player could mimic through the hole, or lift up the massive grate with leverage 2, or any other number of interactions.