Preservation Efforts

Great Stone Church Project

Phase I

1. Stabilize the sagging structure
2. Analyze materials compatible with original materials
3. Bring the structure to seismic codes

Phase II

1. Damage to the Church was greater than previously thought
2. Activities include archival research, preservation diagrams, analysis of structural systems and masonry materials
3. A pilot renovation project in the east transept

Phase III

1. Implement conservation work
2. Crumbling walls are stabilized by a 2 to 3 foot trough cut into the top of the wall and filled with concrete / special epoxy-covered steel reinforcing bars
3. Vertical cuts will be made from top to bottom and steel concrete internal buttresses made to hold them up
4. The five story sanctuary dome is a priority. A 4" crack goes completely through the 42" thick dome and is threatening to split it in two parts.

 

Future Phases

1. Consolidate the stone in the walls; clear debris from the top of the walls
2. Fill the fissures, then crown and seal the wall tops with a non -corrosive shield and reinforce pillars and the base structure of the walls.
3. Stop further cracking with the use of steel pins that will lock the walls together and eliminate "shear" effect; fill the fissures with an adhesive that will be injected behind the plates of the three walls and the transept to prevent the walls from crumbling and washing away.
4. Restore the decorative stonework
5. Construct a drainage system so waters don’t pool and become absorbed into the walls, reducing their ability to bear weight.
6. Provide seismic strengthening
7. Provide interpretive displays and lighting for the monument.

 
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