Three variations of old wooden reservoirs, fully unwrapped with non-overlapping UVs and with PBR setup (game-ready), tested inside UE4 and Marmoset Toolbag (images attached).
You can also find the UE4 project for sale in the marketplace.

The download contains:
.MAX (version 2015)
.MAX (version 2018)
.OBJ
.FBX

Hope you like it, and don't forget to take a look at my other models, some of them may be useful!