DIN 18205

Area	Construction
title	Requirements planning in construction
Latest edition	2016-11
ISO

The DIN 18205 addresses the requirements planning in the construction industry and will be published since the year 1996th It describes the "methodical determination of the needs of building owners and users , their targeted processing as needs and their implementation in structural requirements". In DIN 18205, the individual aspects of requirements planning are divided into five process steps that build on one another. The annex to the standard contains checklists that enable the requirements to be checked for completeness.

Importance and content of requirements planning

Requirements planning is an instrument that provides building owners with all the information they need to make investment decisions . In the introduction to the 2016 edition, requirements planning is defined as, quotation: "an indispensable part of the planning and implementation of projects in the construction industry of all kinds". In the foreword to the 1996 edition it was quoted: "" In Germany, attention has so far been low on this early phase of building planning processes. But since every building project goes through this phase - no matter how poorly handled - and in this phase the If the course is set for all subsequent events in every building plan, an improvement in quality is in the interests of all those involved. It is of considerable importance for the individual project as well as for the building industry as a whole and its economic consequences. "The importance of requirements planning for building projects of the public sector was at least of recognized early on by the users of federal construction, therefore the necessary steps of the requirements planning are described in detail in the guidelines for the implementation of federal construction tasks (RBBau). The RBBau also refer to DIN 18205.

The requirements planning lays the basis for further planning. The problem determination is the basis and prerequisite for commissioning the further planning process, which is usually remunerated according to the specifications of the fee schedule for architects and engineers (HOAI). The creation of a requirement planning is named in the HOAI as a special, i.e. as a separately remunerated service. The service is therefore not covered by the fee for the basic assessment and must be carried out or at least accompanied by the client himself. Difficulties in this are often the lack of professional competence. That is why it is advisable for many consumers to carry out the requirements planning with the help of a specialist, for example a project developer. A performance profile for requirements planning is presented in the standard. The standard does not provide a basis for determining a fee. For this purpose, which can Heft 19 - Supplementary service profiles in project management for the construction and real estate are used by the AHO.

Process steps

The first four sub-steps of the requirements planning process are used to determine the project-specific content. In the fifth process step, the feasibility of the requirements planning is checked in a variant study to cover requirements and the overall profitability is assessed. The sixth sub-step confirms the holistic nature of the requirements planning. This partial step must be repeated continuously in the further planning phases.

Clarify the project context.
Set project goals.
Collect and evaluate information.
Create a demand plan.
Investigate and determine coverage of needs.
Compare requirements plan and solutions.

In the standard, the individual process steps are further subdivided and described in detail. By documenting the planning results in the requirement plan, a target specification is created that constantly accompanies the building project. Those involved in the planning, i.e. the architect and the specialist engineers, must orient themselves to the requirements plan (result of the requirements planning) in the further planning process and constantly compare their planning with the requirements planning. The demand plan can also be used as a basis for competitions .

User demand program

A key point of the documentation of requirements planning in building construction is at least one user requirements program in which the quantitative requirements and the quantitative needs of the future user are recorded.

A user demand program defines, for example:

Type and number of spaces required in accordance with DIN 277 and rooms ( space allocation plan , space requirements depending on the function, required room heights );
Quality and equipment (of the workplace , lighting , devices, furniture , communication systems);
Organizational and operational boundary conditions (transport routes, other functional terms);
Technical and legal boundary conditions ( radiation exposure , noise protection );
Financial and time constraints

Web links

Information from Beuth Verlag on DIN 18205: 2016-11 - Requirements planning in construction

Individual evidence

↑ HP. Achatzi et al .: Requirements planning in project development (= DVP project management, short guide booklet 6 ). Springer Verlag, Germany 2017, ISBN 978-3-662-55626-9 , pp. 1 , doi : 10.1007 / 978-3-662-55626-9_1 .
↑ DIN 18205 Requirements planning in the building industry . Beuth Verlag, Berlin November 2016, p. 4 .
↑ DIN 18205 Requirements planning in the building industry . Beuth Verlag, Berlin April 1996, p. 2 .
↑ RBBau online version. fib-bund.de, August 5, 2019, pp. 28ff , accessed on October 26, 2019 .
↑ Appendix 10. In: HOAI. Federal Office of Justice, accessed on October 27, 2019 .
↑ Appendix 15. In: HOAI. Federal Office of Justice, accessed on October 27, 2019 .
↑ Issue 19 - Supplementary service profiles in project management for the construction and real estate industry . 2nd, completely revised edition. Bundesanzeiger Verlag, 2018, ISBN 978-3-8462-0049-0 .
↑ Martin Hodulak, Ulrich Schramm: User-oriented requirements planning . 2nd, revised and updated edition. Springer Vieweg, Germany 2019, ISBN 978-3-662-58651-8 , pp. 8 , doi : 10.1007 / 978-3-662-58652-5 .

[1] HP. Achatzi et al .: Requirements planning in project development (= DVP project management, short guide booklet 6 ). Springer Verlag, Germany 2017, ISBN 978-3-662-55626-9 , pp. 1 , doi : 10.1007 / 978-3-662-55626-9_1 .

[2] DIN 18205 Requirements planning in the building industry . Beuth Verlag, Berlin November 2016, p. 4 .

[3] DIN 18205 Requirements planning in the building industry . Beuth Verlag, Berlin April 1996, p. 2 .

[4] RBBau online version. fib-bund.de, August 5, 2019, pp. 28ff , accessed on October 26, 2019 .

[5] Appendix 10. In: HOAI. Federal Office of Justice, accessed on October 27, 2019 .

[6] Appendix 15. In: HOAI. Federal Office of Justice, accessed on October 27, 2019 .

[7] Issue 19 - Supplementary service profiles in project management for the construction and real estate industry . 2nd, completely revised edition. Bundesanzeiger Verlag, 2018, ISBN 978-3-8462-0049-0 .

[8] Martin Hodulak, Ulrich Schramm: User-oriented requirements planning . 2nd, revised and updated edition. Springer Vieweg, Germany 2019, ISBN 978-3-662-58651-8 , pp. 8 , doi : 10.1007 / 978-3-662-58652-5 .