A base is provided for use with warning signs and the like. A metal structural framework is fitted to the underside of an elastomeric body in the form of a monolithic slab. Forces from the sign panel are transmitted through the structural framework, which includes a plurality of outwardly radiating legs. Forces are transmitted to the ends of the legs, which preferably are fitted with outwardly extending feet. Force loadings are transmitted through the structural framework rather than the elastomeric body, which provide a ballast for the structural framework.