Dear All,

I was wondering if there is any reference to recommended values for maximum (acceptable) relative settlements between (unpiled) steel tanks and pumps.
An idea on how to produce such document is to take the catalog for the approved spring supports and determine the maximum allowance for vertical movement and use that as the driving figure.
The relative settlement issue can be largely reduced by considering tank construction (and hydrotesting)long ahead of piping installation; however, the values are needed to see if the geotechnical/civil guys can be asked to reconsider their piling/foundation strategy and site preparation based on piping stress requirements.