Hello, 

We have a CI project within an existing building. We are replacing nearly half of the plumbing fixtures, but we still have old toilets and faucets with no available information. Unfortunately, we cannot find the flow rates for these fixtures, and we also lack any old technical drawings.

Has anyone be in this situation? Would it be accepted if we use the baseline consumption? 

Also, for the prerequisite, would it be accepted if we just didnt consider the existing fixture? I know that we can't to that for the credit, but it seems unclear for the prerequisite if that is an acceptable solution. 

Thanks !