Interchangeable base steel structure storage assembly

A base steel structure assembly for supporting an overlying racking system, said racking system having upright columns which support horizontal beams extending therebetween and connected thereto, said base steel structure assembly comprising:

• a front column extending from a front baseplate;
• a rear column generally parallel to said front column and extending from a rear baseplate;
• an upper horizontal member extending between an upper end of said front and rear columns and releasably secured thereto;
• a lower horizontal member extending between a lower end of said front and rear columns and releasably secured thereto;
• at least one brace extending diagonally between said front and rear columns and releasably secured thereto;
• said upper horizontal member being securable to said upright columns of said overlying racking system for supporting said overlying racking system;
• and
• said front and rear columns being provided with holes therethrough for securement of a support beam respectively to front and rear columns of an adjacent of said base steel structure assembly;
• wherein said support beam being is receivable below upper portions of the front columns;
• and
• wherein each of the components of the base steel structure is replaceable.