Removing a section of wall from storage tank
Removing a section of wall from storage tank
(OP)
A client needs to remove a section of vertical wall from an above ground storage tank. The tank is 60 feet diameter x 30 feet high. The section to be removed is at grade 8 feet high x 12 feet of circumference. Is there a reference I could use to calculate the stress on the remaining wall and how to design a temporary stiffening frame. The removed wall sect will be replaced by a new section.





RE: Removing a section of wall from storage tank
RE: Removing a section of wall from storage tank
RE: Removing a section of wall from storage tank
After the work is complete, a new plate of the same original thickness (or greater) needs to be full penetration butt welded into the opening.
RE: Removing a section of wall from storage tank
This is done routinely by tank builders. In fact, there was probably a similar opening in the tank during construction. One caution about circular openings in a circular tank....make sure the reinforcing frame gets carried far enough away from the opening that "oil canning" doesn't happen (plate will buckle around the opening, making replacement of the shell piece very difficult).