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Although the primary objective on designing a structure is to support the external loads, the achievement of an optimal layout that reduces all costs associated with the structure is an aspect of increasing interest. The problem of finding the optimal layout for bridgelike structures subjected to a uniform load is considered. The problem is formulated following a theory on economy of frame structures, using the stress volume as the objective function and including the selection of appropriatedoi:10.1061/(asce)st.1943-541x.0000905 fatcat:ntwjyjrb4bg6bo3r5p4pv6scku