Sym P. le
Mechanical
- Jul 9, 2018
- 1,066
Figure 12 stair location is off the exterior balcony. The bare stone surrounding the door as opposed to plaster interior finish confirms this.
Off center openings? It's difficult to say with certainty. In the side towers, it's not a big issue but if the center tower was improperly laid out, the problems compound down to the ground floor. Is it possible that the north portion of the tower shifted without showing any indication on exterior work? Perhaps the interior wythes shifted initially but not the exterior stone work. During some live footage of the side tower demolition, interior clay brick work was visible but I could not see the extent of it. I believe "... steel tie rods to prevent the walls from parting." is reference to interlocking the interior and exterior wythes. If loads shifted and were not corrected prior to this remedial work, this is just a 175 year latency.
Heavy interior finish, furring/lath plaster, could hide indications of further masonry failure in the lowest levels of the north portion of tower support.
Structural steel collar visible in the rubble of the center tower.
Off center openings? It's difficult to say with certainty. In the side towers, it's not a big issue but if the center tower was improperly laid out, the problems compound down to the ground floor. Is it possible that the north portion of the tower shifted without showing any indication on exterior work? Perhaps the interior wythes shifted initially but not the exterior stone work. During some live footage of the side tower demolition, interior clay brick work was visible but I could not see the extent of it. I believe "... steel tie rods to prevent the walls from parting." is reference to interlocking the interior and exterior wythes. If loads shifted and were not corrected prior to this remedial work, this is just a 175 year latency.
Heavy interior finish, furring/lath plaster, could hide indications of further masonry failure in the lowest levels of the north portion of tower support.
Structural steel collar visible in the rubble of the center tower.