From what you say - with clause 60.1 (12) for physical conditions deleted - the key question is "is the end result of hat the Contractor has to construct different ?".
If the answer is 'Yes, then it is a change to the Works Information.
Having said that, another avenue could be that the Contractor cannot construct it within the constraints of the Works Information. Again, if that is the case, it would be a CE under clause 60.1 (1).
If the answer is 'Yes, then it is a change to the Works Information.
Having said that, another avenue could be that the Contractor cannot construct it within the constraints of the Works Information. Again, if that is the case, it would be a CE under clause 60.1 (1).