If you have taken over an existing warehouse and the intended use is now different to its existing, the floor would require testing to make sure it is suitable for the new operation and to see what alterations may need to take place.
Ideally, before investing in new Materials Handling Equipment (MHE), you would need to make sure that your warehouse floor is suitable for the operation of these machines and, if not, look at possible remedial works.
New floors also require testing for flatness and levelness to check they have achieved the specified tolerances.