A self-standing modular structure support is provided for a self-standing structure having a perimeter component. The self-standing structure support comprises a first member, the first member comprising a perimeter component receiving portion; a second member, being disposed, during use of the self-standing modular structure, in a generally horizontal plane, the second member extending, during the use, outwardly from an exterior surface of the perimeter component; and a third member, the third member being configured to detachably connect the first member to the second member; the first member being supported, during the use, on the second member; the support being configured to support the perimeter component without use of straps and without use of ground engaging projections when the perimeter component is received within a perimeter component receiving portion of the first member. The perimeter component can comprise a plurality of side panels. The structure can further support floor tiles.