a framework investment plan as well as an overall vision of the buildings and structures complying with the program, and often also an approximate estimate of the cost of the investment,

The study is in effect a project plan. All the operational details of its implementation including commercial, technical, financial, economic, institutional, socio-cultural and environmental issues are specified herein and critically analyzed for further implementation.

The design concept/preliminary design is the basis for the development of a functional/usage program, serving as a basis for the preparation of the public procurement proceedings for a “design and build” type of contract; the specifications for the planned project, as required by the rules and regulations concerning sharing of information about the aspects of environment and its protection, public participation in environmental protection proceedings and an assessment of impact on the environment.

design documentation It serving as a basis for obtaining the opinions, arrangements, consents and permits, including building permits

This documentation serves as the primary ingredient of the so-called execution drawing documentation phase, which is the refinement of solutions contained in the building permit level technical documentation for the project. execution level technical documentation, shop drawings, as-built documentation, tender and costing documentation, and other specific analyses in the field of railway construction and railway transportation technology.