Hi!
In a good Performance Management System (PMS) the parameter for the evaluation of performance should be based on the actual content of the job and the desired outcomes mandated from the concerned employee for a specific performance period. Therefore, regardless of the industry or specific products/ services that a company produces, employees should be evaluated based on the work activities he was tasked to do. The ratings would still be the same, but "rating guides"may vary. I would like to assume that in a construction (infra) company, project engineers would be more comfortable about their ratings being based on "timeliness" and/ or "quality of performance" more than anything else.
Hence, there is need for the development of a rating guide to be able to appropriately assign rating scores for every critical work factor. An MBA type, where outputs are measured based on % of accomplishment vis-a-vis the quantity of work assigned, might be an easier work for HR.
If you need external help on this matter, let me know. My company can help you develop your company's PMS rating parameters ---- including the entire PMS system if needed.
Best regards.