germany-darmstadt: building cleaning services./ fraunhofer institute for structural durability and system reliability lbf./ the fraunhofer institute for structural durability and system reliability lbf advertises cleaning services. the property in darmstadt consists of the following buildings: building a, bartningstraße 47 building c, bartningstraße 47 (access via jaupstraße) building d, bartningstraße 51 building b, bartningstraße 53 – optional building e (lot 2) schlossgartenstraße 6 (4km away)