For seismic integrity we needed to add support columns to keep the main joists from falling in case of an earthquake. The joists in question are about 16 to 18 inches square and span the width of the chapel. The pillars also needed to have their own cement footings separate from the old stone foundation. So in turn holes were cut in to the floor of the chapel to pour the footings.
One interesting thing that was discovered when the holes were cut in the floor was that there are three pine logs that are partially set in the foundation that also span the width of the chapel, as the first layer of support for the floor. The top and bottom were rough cut to give a flat surface for the floor joists but the bark was left on the other sides. The logs each had two stone supports to keep them level.
Here you can see the old stone foundation.
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