4.8 Tender evaluation - weighted attribute method
- 4 Tendering procedures - Professional services
- 4.1 Tendering authority procedures
- 4.2 Invitation to tender
- 4.3 Expedited tender procedures
- 4.4 Short-listed procedures
- 4.5 Tender evaluation specification
- 4.6 Tender evaluation process
- 4.7 Tender evaluation - Brook's Law method
- 4.8 Tender evaluation - weighted attribute method
- 4.9 Tender evaluation - target price method
- 4.10 Tender negotiation
- 4.11 Notification procedures
- 4.12 Conformity with RFT
- 4.13 Use of particular inputs
4.8 Tender evaluation - weighted attribute method
4.8.1
Tenderers shall be required to submit tenders in two separate parts, as follows:
- Envelope 1 shall contain all tender information other than price.
- Envelope 2 shall contain the tender price information.
4.8.2
This tender evaluation shall be conducted in three stages, as follows:
- The first stage shall involve opening only envelope 1 and assessing tenders against the five non-price attributes. Each attribute shall be scored on a points basis, from 0 (completely inadequate) to 100 (excellent). Any tender that scores 35 or less on any attribute shall be excluded from further consideration.
- The second stage shall consist of opening the second envelope and converting the tender price to a grade using the following formula. Any provisional sums in tender prices shall be removed before calculating price grades.
- The third stage shall consist of multiplying the weight of each attribute as previously specified in the RFT by the grade of that same attribute and then dividing by 100 to give an index for each attribute. The indices for each tender shall then be summed to give an overall index for each tender.
4.8.3
The tendering authority shall only enter into a contract for the tender which scores the highest overall index. Each tender's overall index shall be rounded to the nearest whole number. Where more than one tender shares the top overall index, the contract shall be awarded to whichever of these has the lowest price. Negotiation is permitted provided it does not circumvent the intent of Section 4.12.1 of this Manual.
