1999 Conditions Assessment Survey of the Exterior Marble:
~~ Elevation Drawings

	Computer screen snapshot of a digitized conditions drawing in AutoCAD®.

The conditions of the exterior marble of the North and West facades were recorded during an extensive field survey in the summer of 1999. The survey utilized a defined set of conditions to objectively quantify the types of deterioration patterns found on the exterior marble. (See the Glossary of Masonry Conditions for definitions and illustrations of the conditions surveyed.) The conditions were indicated on existing architectural drawings using a specified array of colors and graphic symbols grouped according to those requiring intervention (red), those requiring monitoring (green), and those requiring routine maintenance (blue). The field drawings were then digitized for further analysis using AutoCAD®. Every condition, as well as any distinct architectural features (e.g., joints), was digitized and placed on its own layer in AutoCAD®. This allows specific conditions (layers) to be turned on or off in order to view the drawings in various relational contexts. The links below show examples of the drawings that were made of the North and West facades of the Second Bank during the 1999 Survey.