Thank you for your prompt response.
The 3D laser will be helpful to capture the above grade dimensions. However, to study if the building can handle the load of the new story, structural engineers will need to know more about building/concrete members.
Concrete compressive strength: can be...
We are planning to add a new story for an existing (30 years old Concrete/Masonry Building) and cut thru slabs to accommodate a new elevator/shaft.
Unfortunately, some of the engineering details/drawings were lost. We only have the drawings of the GF & FF but not the basement nor foundations...
