Masonry Magazine March 1979 Page. 28
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A mason drills holes in the tower at upper level #3 to receive 1-inch tie rods.
PINE STREET INN TOWER continued
and themselves to be true craftsmen in carrying on a centuries-old tradition.
The most difficult part of the tower to repair involved the large corbels just below the low roof. The southeast corner corbel had been shattered by lightning and the extent of the damage was not known. As a safeguard, drawings called for the entire corbel to be removed and rebuilt.
The magnitude of this task was tremendous. The whole corner of the tower would have to be shored and braced. The masons felt that the tower would collapse if this section of wall were removed. They suggested peeling off the outside veneer and examining the interior wythes first.
Only Veneer Damaged
Very carefully, they removed the outside veneer and examined the back-up brick closely. It was discovered that only the outside veneer was damaged the force of the lightning had been dissipated in the exterior brick. Fortunately only the veneer had to be replaced. What might have been an extensive and tricky repair job was avoided.
When the masons began to work on the large corbels, the brick above them were so loose that they began to move. So before the corbels could be repaired, the masons had to rebuild the corners above them. This is like building a brick wall from the top down. To make it possible, stainless steel tie rods were installed just above the corbels to relieve some of the strain that these 10-ton pieces of brickwork put on the tower structure.
Before the winter of 1978 arrived, all of the loose and broken brickwork had been repaired. Repointing, cleaning and the replacement of the stairs remained to complete the restoration of the tower.
Conclusion
The restoration of yesterday's intricate brickwork would seem to present an insurmountable challenge to the modern engineer. Many of the old skills are lost and the construction industry is no longer based on a labor-intensive economy. Budget limitations, deadlines, dealing with neighborhood groups and the various authorities are enough to undermine the simplest of building programs.
We have attempted to document here how one office dealt with these problems and managed to save an historic landmark. The methodology described here is a synopsis of some of the basic techniques and analysis necessary for successfully handling a complex restoration problem.
28 MASONRY/MARCH, 1979