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Survey and laboratory and in situ testing

  • ICR provided documentation and various site and laboratory tests for the restoration of he campus buildings.
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    Initial Needs Assessment & Laboratory and Site Testing

  • CAD drawings of all survey information for inclusion in working set
  • Preliminary exterior stone conditions survey all campus buildings
  • Hands-on survey at select locations
  • Coordination & supervision of probes
  • Laboratory and in situ testing of marble and limestone
  • ICR began campus-wide works with the review of historic records focused on repair history, construction design details, and modifications over time to identify and evaluate deterioration. This initial needs assessment also included the visual survey of all exterior building stone. ICR used the data collected to identify the best locations for focused hands-on surveying at limited swing stage drops on the Secretariat, General Assembly and Conference Building. ICR conducted this hands-on inspection of conditions and coordinated the non-destructive evaluation of potentially at risk areas. Probes were conducted at severe and/or extensive conditions, and nearby areas exhibiting no apparent conditions, to help identify and predict worst case scenarios, and confirm as-built documentation.

    Due to findings from the conditions assessment, ICR followed with laboratory testing of Secretariat and General Assembly marble and General Assembly limestone. This included designing a testing program around available material from the probe effort to determine if further investigation was warranted. Testing included extracting fa├žade stone cores and subjecting them to capillary and immersion absorption and tensile strength tests to study material characteristics.

    This work was followed by the design and implementation of a Secretariat exterior marble strength testing program focusing on understanding the possible effects of existing radiant heating with regards to stone integrity. This included testing to establish variation in stone strength from the marble surface inward, to correlate ASTM D3967 data for weathered stone with ASTM C880, and to understand marble condition with respect to anchoring.

    A final phase of in situ testing was conducted on the Secretariat, General Assembly and Conference Building. This included cleaning testing, determination of repair materials and methods and mock ups.