## 1 Introduction
### The Construction Process in the Czech Republic and Its Documentation
TAD accuracy means the accuracy \(\sigma_{xy}\) = 0.14 m, Geometric accuracy means the accuracy of geometric parameters stated in the relevant technical standards of geometric accuracy and usually ranging from several mm to cm. In the implementation or operational phase, sub-millimeter accuracy is required in connection with the measurement of displacements and deformations. If the data is continuously stored in the unified data warehouse of the Building Information System, then it is very effectively structured and accessible within the defined roles of the construction participants. A specific feature of the Construction Information System is the internal data structure divided into spatially bound documents, legal regulatory documents--generally valid, local, time-dependent. Figure 1: Sub-phases of the construction process and their documentation on the timeline. During the construction process, different types (levels) of documentation are prepared according to the purpose (Figure 1):  
The main purpose of the documentation type \"Investment Intent\" (II) is the initial materialization of the investor's conceptual ideas about the building, especially in terms of purpose, spatial layout, location of the building in the area and its connection to the technical infrastructure. The documentation type \"Study\" (ST) is a subsequent elaboration of the investment plan into alternative solutions, whereby the optimal design and alternative designs are evaluated. This is followed by the preparation of documentation for planning permission, which is submitted to the building authority, which then initiates a public building approval process with the affected parties. The \"documentation for the planning permission\" (PD) considers the location of the building within the limits of the territory, and within the planning procedure it is necessary to enter into negotiations with the relevant authorities, technical infrastructure administrators and other participants. An important part of the documentation is the documentary part, which contains statements from the relevant authorities, technical infrastructure managers, expert opinions and other statements. The planning decision-making process ends with the issuance of a planning permission, which specifies the restrictive conditions for the location of the construction in the area that resulted from the planning procedure in the context of the investment project [2]. Next comes the design phase, in which the investor commissions the designer to prepare the design documentation for the building permission. \"Documentation for building permission\" (FD) is a technical elaboration of the PD in terms of the restrictive conditions specified in the planning permission, the subject of the solution is the specific spatial location of the building and layout, connection to public technical infrastructure and roads, the layout of the construction site and the principles of construction organization. The FD includes the drawing and documentary part of the documentation prescribed by the Building Act, which is submitted to the building authority. The building authority initiates a public building procedure process, which includes consultation of the construction with the affected parties. The building permission process ends with the building authority issuing a building permission, which specifies the purpose and description of the construction and sets out the binding conditions for the execution of the construction in the context of the constraints resulting from the building procedure process. The design phase ends with the preparation of the \"Documentation for assignment of the construction\" (TD), in which the TD is supplemented by the investor's Technical Quality Conditions (TQC) and other conditions of the public tender. The TD serves as the basis for the public procurement procedure for the construction contractor, for the determination of the construction price and for the evaluation of the bids of the bidders.