Fluid containment structure and system

A method for containing unintended fluid spills comprising the steps of:

• connecting a plurality of wall segments to a plurality of angled corners, said plurality of wall segments comprising:
• a plurality of generally horizontal tubular members connected at a first end and a second end to a first and a second generally triangular end piece, respectively, said generally triangular end piece having a base and a top such that a first and a fourth of said horizontal tubular members are attached to the top of the end piece and a second and a third of said horizontal tubular members are attached to the base of the end piece, the first and the second generally triangular end pieces being part of a first and a second ones of the plurality of angled corners, respectively, and
• a generally planar member interposed between a first and a second ones of the plurality of generally horizontal tubular members, said plurality of angled corners being narrower at an interior than at an exterior of the angled corners;
• said plurality of wall segments connected to said plurality of angled corners forming a closed wall;
• connecting a first wall segment of the plurality of wall segments to an opposing second wall segment of the plurality of wall segments with a tensioning member;
• placing a fluid impervious membrane in a space defined by the closed wall;
• securing said fluid impervious membrane to a wall segment by interposing said fluid impervious membrane between a membrane securing member and a slot formed between the first and the fourth of said generally horizontal tubular members such that frictional forces caused by interaction of the membrane securing member with each of the first and fourth generally tubular members and said fluid impervious membrane secure said fluid impervious membrane to said closed wall;
• and,
• placing a fluid storage vessel above said fluid impervious membrane and within said closed wall.

A fluid containment system comprising:

• a barrier wall having a slot, said barrier wall comprising connected barrier wall segments and said slot having a plurality of slot walls, said barrier wall forming a closed wall;
• a tensioning member joining opposing ones of the barrier wall segments;
• a first fluid impervious membrane spanning a space between opposing barrier wall segments of the connected barrier wall segments, said first fluid impervious membrane being adjacent at least one of said plurality of slot walls;
• and
• a fluid impervious membrane securing member sized to be interposed between adjacent ones of said plurality of slot walls with said first fluid impervious membrane interposed between said fluid impervious membrane securing member and one of said plurality of slot walls such that frictional forces caused by interaction of the fluid impervious membrane securing member with each of the adjacent ones of said plurality of slot walls and said first fluid impervious membrane secure said first fluid impervious membrane to said closed wall;
• a truss, said truss spanning a distance between opposing ones of the barrier wall segments;
• said truss supporting a second membrane above said first fluid impervious membrane;
• and,
• a plurality of truss supports, said truss supports elevating said truss above said opposing ones of the barrier wall segments and at least one of said truss supports having a foot engageable with said slot.