INTERVENTIONS TO REPAIR AND RESTORE THE SAN FRANCESCO AL PRATO COMPLEX A PERUGIA 17 Marzo 2014 827 × 571 PRELIMINARY AND EXECUTIVE PROJECT AND SAFETY COORDINATION DURING THE PLANNING PHASE OF INTERVENTIONS TO REPAIR AND RESTORE THE SAN FRANCESCO AL PRATO COMPLEX A PERUGIA INTERVENTIONS TO REPAIR AND RESTORE THE SAN FRANCESCO AL PRATO COMPLEX A PERUGIA