Abstract: A structure on which various equipment, particularly outdoor electronic cabinets, can be mounted comprises a shallow, box-like frame including rigid sides, bottom plates secured to the sides, and cross braces extending between and secured to opposite sides. For rigidity and strength, the cross braces comprise U-beams having upper and lower laterally extending flanges, the upper flanges serving as horizontal surfaces for the mounting of equipment on the support. In a preferred use, the support structure is placed on the ground at a cleared outdoor site and locally available ballast is loaded into the structure for firmly anchoring it in place.