Structural Issue? Noticeable slant to middle of house
We live in an old house (built in 1814).
Our house is about 20 feet wide and 40 ft long. It is supported by an iron beam where the first floor joists rest on.
We have noticed that there is a slant from each side of the house towards the centre (where the beam is situated).
This is noticeable on the first floor and in the basement.
I would say the slant is less than 5 degrees, but am worried that is related to some other structural issues.
For example, soft soil underneath the house due to water damage or other structural problems.
Does anyone else have a similiar siutation or know of what type of spe******t I should see ?