NCPTT | National Center for Preservation Technology and Training

Symposium: Wood in the 21st Century, March 24-25, 2012

On January 19, 2012 By Andrew Ferrell

Beautiful_Post_and_Beam_Timber_Frame_Barn

Hands-on Workshops: Terra Cotta, Stone Repair, and Repointing, February 22-23, 2012

On January 17, 2012 By Ed FitzGerald

Learning to Look: Workshop on Cor-Ten Steel Sculpture, February 24, 2012

On January 17, 2012 By Ed FitzGerald

Preservation South: A student conference at the University of Georgia

On January 12, 2012 By Debbie Smith

Assessment of Handheld Multibeam Sonar Imagery for the Study of Submerged Cultural Resources (2011-04)

On December 31, 2011 By Mary Striegel

Colloquium on the Development of Curricula in Heritage Preservation Engineering (2011-12)

On December 31, 2011 By Sean Clifford

The Breeding Barn at Shelburne Farms National Historic Landmark, in Shelburne, VT, was visited by colloquium participants.

Evaluation of Ca(OH)₂ Nano-Particle Treatment of Cordage/Basketry (2011-01)

On December 31, 2011 By Sean Clifford

Figure 4. This image, from the third round of synthesis of nano-particles, shows an agglomeration of particles that occurs upon drying. The SEM image was taken at a working distance of about 7.5mm, 25keV, about 45 mA and 3.50k magnification. Agglomerated particles do not easily dissociate from one another and it becomes difficult to disperse these in cordage. This concentration issue requires that the concentration of the calcium hydroxide in the dispersion is low.

The major goals of this project involved: laboratory set-up; synthesis of Ca(OH) 2 nano- particles; cordage sample acquisition; development of a research design; preliminary testing of solutions and solvents; mechanical and aging studies; analytical characterization; imaging and data collection; and report preparation. The project has demonstrated that aqueous dispersions of calcium hydroxide nano-particles are not an appropriate treatment for archaeological cordage because the cordage swells when treated with water. The study has shown that 2-propanol as a carrier solvent for Calcium hydroxide nano-particles does not swell cordage fibers or inhibit the migration of nano-particles into the matrix, while increasing the pH of the cordage. The results of this funded project suggest that calcium hydroxide nano-particle solutions in isopropyl alcohol is promising as a conservation treatment for archaeological cordage. This study has also confirms that storage that offers the most confinement and immobilization will further reduce damage from handling.

Masonry History Integrity: An Urban Conservation Primer (2011-08)

On December 31, 2011 By NCPTT

Breaking the Virtual Barrier: A Model Program for Preservation Trades Education and Training Utilization (2011-04)

On December 31, 2011 By Sean Clifford

The Breaking the Virtual Barrier project provided a unique opportunity for Jefferson Community and Technical College to advance the knowledge base in providing instruction in the construction trades. The project provided the opportunity to expand an existing partnership with the Dry Stone Conservancy and pilot unique ways to use emerging technology to provide instruction in the field of preservation trades training.

While the original project involved utilizing Interactive Television as the means for broadcasting preservation trades courses, ultimately wireless digital technology was used for implementation. A one week dry stone masonry course was conducted at two college sites some fifty miles apart. The course was broadcast in real time to both sites simultaneously. The Master Instructor alternated sites each day so students at each site had the experience of interacting with him since this was a pilot project.

The implementation of the project presented its share of technological challenges, but none were impossible to solve. Future projects will benefit from the lessons learned by all parties in the process. At the end, the project was successful in that we were able to use wireless digital technology to transmit real time video and audio to both sites making the instructional experience interactive. It is then possible to take the instructors expertise and broadcast this to students in remote locations.

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Preparing You For the Next Disaster Webinar

Go Digital and Social: the Public Face of NPS Park Cultural Landscapes Program

Training in Climate Change and Cultural Resources

New Guidance Published for Installing Solar Panels on Historic Properties

Web Catalog Increases Access to NPS Museum Collections

Archeology & Collections

Architecture & Engineering

Historic Landscapes

Materials Conservation

Symposium: Wood in the 21st Century, March 24-25, 2012

Hands-on Workshops: Terra Cotta, Stone Repair, and Repointing, February 22-23, 2012

Learning to Look: Workshop on Cor-Ten Steel Sculpture, February 24, 2012

Preservation South: A student conference at the University of Georgia

Assessment of Handheld Multibeam Sonar Imagery for the Study of Submerged Cultural Resources (2011-04)

Colloquium on the Development of Curricula in Heritage Preservation Engineering (2011-12)

Evaluation of Ca(OH)₂ Nano-Particle Treatment of Cordage/Basketry (2011-01)

Masonry History Integrity: An Urban Conservation Primer (2011-08)

Breaking the Virtual Barrier: A Model Program for Preservation Trades Education and Training Utilization (2011-04)

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