the Project Manager shall obtain te

the Project Manager shall obtain tenders or bids from not less than 3 contractors, suppliers or consultants which have been pre-qualified or shortlisted on the basis of such criterion as may be proposed by the Project Manager and approved by the Employer provided that the Employer may waive the requirement of this Clause 3.r where a minimum of 3 tenders or bids cannot be obtained despite all reasonable endeavours on the part of the Project Manager or where the Project Manager reasonably forms the view that practical considerations dictate that less than 3 tenders or bids are to be obtained and has provided to the Employer reasonable justifications;