What kind of contractor reinforces floors?

Question:I'm trying to put a jacuzzi on the second floor of a 92 year old home. I know the floor needs additional load capacity, and I want a professional to do this due to the high risk. General contractors say they'll get back to me, but not one has. All the carpenters I can find do highly ornamental decorative stuff. Is there something specific I should be looking for?

Answers:
a general contractor should be able to do that. it will probably require a lot of tearing out of ceiling on the first floor, so it will probably be costly.