25.01 Where are tanks located in buildings?

Tanks are required by code to be located in buildings at the lowest level in the building, with limited volumes allowed for day tanks in upper levels.

This means that tanks are often located several level below ground in urbn high rise construction, while generators may be locate at grade, upper floors , or the roof..

The tanks are filled by delivery trucks located at grade. So between fill piping, fuel supply and return piping to generators, and tank vent piping, routing of fuel piping within buildings is an important consideration.