A high degree of collaboration is often involved in creating public sculpture. Central collaborators are the sculptor and owner, typically a commissioning agency or developer. Architects and landscape architects can be artistic collaborators or part of the design team. Art object conservators, engineers and other consultants play a role in selecting materials and reviewing maintenance strategies or design aspects. Other advisory bodies and community groups may be part of the collaborative process. All parties are responsible for the work’s survival and should be discussing maintenance concerns at every step along the way