2.4 Conditions of contract The contract documents should clearly define the scope of work to be performed or goods to be supplied, the rights and obligations of the recipient and of the con tractor or manufacturer, and the powers and authority of the engineer or architect, if one is employed by the recipient, in the administration of the contract. In add ition to the customary general conditions of contract, some of which are referred to in these guidelines, special conditions appropriate to the nature and location of the project should be included. 2.5 Clarity of bidding documents Bidding documents should be so worded as to permit and encourage international competitive bidding and should set forth as clearly and precisely as possible the work to be accomplished, the goods to be supplied, the place of delivery or install ation, and the warranty and maintenance requirements as well as other pertinent terms. In addition, the bidding documents, where appropriate, should define the tests, standards, and methods that will be employed to judge conformity of equip ment as delivered, or works as performed, with the original specifications. If altern ative bids are acceptable, this should be expressly stated. The bidding documents should also identify the main factors or bases, which will be taken into account in evaluating the compared bids including factors, if any, which are unquantifiable in monetary terms. Any additional information, clarification, correction of errors or alterations of bidding documents should be sent promptly to all those who had requested the original bidding documents, and in the case of prequalification, to those invited to bid. 2.6 Standards If national standards with which equipment or material must comply are cited, specifications in the bidding documents should state that equipment or materials meeting other standards, which ensure an equal or higher quality than the stand ards mentioned, will also be accepted. 2.7 Use of brand names Specification should be based on performance requirements, and references to brand names, catalogue numbers, or the like, should be avoided as far as possi ble. If it becomes necessary to quote a brand name or catalogue number of a particular maker to clarify an otherwise incomplete specification, the words “or equivalent” should be added after such brand name or catalogue number, and the specification should permit the acceptance of offers for alternative goods which have similar characteristics and which provide performance and quality at least equal to those specified, unless such alternatives are not acceptable on grounds
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