Please help brand new old house owner in need.
I have 130 yr old 3.5 story all brick Chicago workers cottage, about 20'X40'. No load bearing walls, floor joists 3x18, 12" center to center on first floor and getting slightly smaller going up. Brick walls on ground level are 17" thick, getting thinner as we go up, top floor has only one row of brick. The house is in great shape and has no visible cracks on brick, only some cracks in plaster. Flat roof, no other reno done than duckt work and one wall (parallel to joists) removed. Floor slightly sagging on second floor.
The house shakes during high wind gusts. It is a barely noticable hickup, not a sway like in high risers. I can imagine the wind blowing it to one direction and when it stops the house jerks and straightens itself back. My brain says that if it has survived for this long, it will outlive me. My nerves disagree. The house is colossal, it's brick, it should not jerk. Or should it?