This volume addresses the sphere of architectural surveying in emergency or critical contexts, offering a systematic treatment of operational methods for measuring, documenting, and interpreting built and environmental heritage under time‑sensitive or risk‑prone conditions. Through case studies and methodological reflections by Maestri, Mazzetti and Canciani, the work explores how measurement techniques, graphic documentation and restoration imperatives intersect. The focus lies on urgent interventions, rapid data acquisition, and the challenges of heritage valorisation via surveying. The book contributes to the fields of heritage documentation, architectural drawing and emergency planning by proposing a structured framework for relief‑oriented survey practice.