Method of construction of prestressed concrete panel wall liquid storage tank and tank so constructed

A method for constructing a storage tank having a generally cylindrical shape, comprising:

• a. constructing an inner tank wall comprising concrete panels on a foundation wherein the inner tank wall has an outer surface and an opening in the inner tank wall defined by an opening height and two vertical edges spaced a width apart, the opening provided to allow the passage of people and equipment there through prior to step (e) of the method;
• b. anchoring at least a first elongated tensile member to the outer surface of the inner tank wall at a first plurality of locations along one of the two vertical edges adjacent the opening;
• c. wrapping the outer surface of the inner tank wall with the at least a first elongated tensile member;
• d. anchoring the at least a first elongated tensile member to the outer surface of the inner tank wall at a second plurality of locations along the other of the two vertical edges adjacent the opening such that each of the first plurality of locations is horizontally aligned with each of the second plurality of locations;
• e. installing concrete panels in the opening in the inner tank wall to create a sealed opening;
• f. anchoring at least a second elongated tensile member to the outer surface of the inner tank wall at a first plurality of locations along one of the two vertical edges adjacent the opening;
• g. wrapping the sealed opening with the at least a second elongated tensile member;
• and
• h. anchoring the at least a second elongated tensile member to the outer surface of the inner tank wall at a second plurality of locations along the other of the two vertical edges adjacent the opening.