The implementation of large projects requires significant analysis and preliminary calculations. To build a manufacturing enterprise, you must first minimize the possibility of creating unprofitable production. Administrative, residential (including multi-storey) and other buildings also need to clarify all technical and economic indicators so that the organization that will subsequently maintain and operate such a facility can pay for it and not face inflated maintenance costs.

To resolve such issues, a complex of pre-design work is carried out in advance with the preparation of appropriate documentation. Without some experience in this matter, you may encounter a number of problems, since there are several types of pre-project documentation that are associated with the calculation of technical and economic indicators:

Feasibility study, fuel and energy assessment, etc.

Detailed documentation is the final complete version, on the basis of which construction and installation work can begin. The development of a project of working documentation usually begins almost immediately after the design (feasibility study stage), i.e. it occurs almost in parallel. In order not to waste time, the RD stage is started as soon as a positive conclusion is received on the approved part of the feasibility study.