Defined the interventions on the methodologies, equipments and workers employed, it may proceed with the quantifying economic transactions: the products developed for this purpose are the metric computer, the prices analysis and the estimation metric computer.
Based on the planning drawings are calculated the quantities of items or areas on which to work; the metric computer shows in the table the single dimensions (length, width, depth), the equal parts or number of elements, the units of measurement ( body, each, ml, mq, mc, hour, etc.) and the total.

Then it performs an prize analysis of the single unit of production, based on official price lists in use by region, on the client and the type of work. In lack of standard prices it can make a new price, using the basis cost of price lists and calculating the time spent in labour, the amount of materials and rentals, adding general expenses and profit for the company.

For particular sort of processing is carried out a market survey, comparing the results and it is defined an average unit price.
Finally, in the estimation metric computer are associated the quantities with the unit prices and it is defined the cost of each process and of the whole intervention.
To complete the entire project, it draws up an economic framework, which summarizes the costs of the intervention, divided into homogeneous categories, and add other expenses necessary to carry out how much defined as: the security costs, design, site management, security coordination, any unforeseen, tender expenses and all administrative costs in the case of public procurement, specialist consultant and taxes as per regulations.