elementsdb provides data and examples for urban design. This resource catalogues comparably illustrated and measured examples of urban land uses. Database cases are built from field-measured examples of the land use 'elements' of urban form— parks and open spaces, streets, residential, commercial, civic and industrial parcels and buildings. Each case is rigorously measured and illustrated to the same protocols, standards and graphic conventions. elementsdb is currently in beta version. New cases, functions and interface refinements are added frequently.