|
1999
Conditions Assessment Survey of the Exterior Marble:
~~ Glossary of Masonry Conditions
A detailed
glossary of conditions was developed and tested for the field survey
of the north portico and west elevation. A number of goals were
defined that led to the final identification and classification
of conditions:
- Only
after completely mapping conditions and understanding the broader
deterioration patterns can more specialized types of analysis
be utilized to explain cause-effect relationships.
- Conditions
recorded were classified according to severity and degree or type
of action required. This allowed NPS staff to be able to interpret
the most critical needs upfront.
- The
conditions recorded included inherent compositional defects within
the stone, the influence of weathering conditions in the surrounding
environment (temperature, moisture, structural and thermal stresses,
accumulation of airborne pollutants), previous repairs, and historic
loss. In this way, patterns of decay could be studied over time
and in combination with former repairs and maintenance.
- The
glossary should be adaptable to other buildings within INHP, particularly
the First Bank and Merchants' Exchange so that marble conditions
and data can be compared across a wider spectrum of case studies.
|
