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69.C. United States Department of the Interior, National Park Service, Historic Preservation Training Center, July 30, 1997. Memorandum to Superintendent, Gettysburg National Battlefield. From Superintendent, Historic Preservation Training Center.

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Project Agreement: Preservation of the Pennsylvania Memorial Dome Masonry Gettysburg National Military Park I. Description of the Project Work to be executed under this Project Agreement consists of the removal of caulk from the masonry joints of the Pennsylvania Memorial Dome and placement of mortar within these joints. The Pennsylvania Memorial is exhibiting failure of the caulk joints, causing structural failures and staining of historic stone and bronze as a result of water infiltration and staining historic stone metal fabric. The Historic Preservation Training Center (HPTC) has been asked to perform preservation tasks that will remedy the root cause of the water infiltration. The work covered by this Project Agreement is limited to the dome of the Pennsylvania Memorial, extending from the base of the bronze statue "Victory" to the base of the corbelling on the lower portion of the dome. The Pennsylvania Memorial received preservation treatment in the early 1980's at which time caulk was placed within the joints during construction. The caulk has proved to be an unsatisfactory masonry joint sealer. It has deteriorated, causing water penetration into the structure and resulting in structural damage which has become stained, affecting the aesthetic qualities of the Memorial. As proposed, HPTC will document the existing conditions of the dome. Work will proceed to remove the existing caulk from the joints, clean all joints, and seal all of the joints with mortar and an appropriate joint finish. Project documentation will include photographs, drawings, and a written narrative to be included in the Record of Treatment. Visitor safety will be addressed to prevent any injuries from overhead preservation work. This may include, but is not limited to; 1. the placement of netting at the base of the work area to prevent falling debris from reaching the lower plaza areas and 2. restriction of visitor access on the lower plazas immediately beneath daily work zones. The preservation tasks of the current project have the following objective: To preserve the Pennsylvania Memoria by mitigating water infiltration from the area of the dome, accomplished by the sealing of all mortar joints with a cement based mortar. II. Scope of the Project The Historic Preservation Training Center will serve as the preservation specialists to complete the preservation work required at the Pennsylvania Memorial. When complete, these repairs will have removed a primary cause of deterioration of the masonry at that structure. Task #1: Mobilization, Fall Protection System, and Documentation Completely document all existing conditions of the dome using photographs, dimensioned sketches, and videotapes. Due to the limited staircase access, a crane

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Gettysburg National Military Park, Code: GETT

Gettysburg National Military Park, Adams County, Pennsylvania
Latitude: 39.804500579834, Longitude: -77.2384033203125

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