Are a power washer and fire hose the same thing?
You did no work on the hydrant. That's the official answer. Your muscles did quite a lot of work (but difficult to work out how much) on each other.
*Piping Isometrics: Each pipe line is detailed by at least one isometric. This need not be to scale but should show all material, size, weld, and fitting information. The isometric includes all pipe lengths and all necessary datums identifying the pipe location in the region where it is to be installed. The isometric is the pipe manufacturing drawing and includes a part list identifying all component parts of the pipe being detailed. *A bill of materials, which gives an overview of all the parts in the pipe system, with position no., dimensions, quantity and material.
