**Article 18 PBG - Terms, Measurement, and Calculation Methods** Planning and Building Act (PBG) - Terms, Measurement, and Calculation Methods**

1. The Executive Council shall determine in a regulation the terms, measurement, and calculation methods.

2. This includes in particular the terms, measurement, and calculation methods for

a) the relevant terrain

b) the buildings and parts of buildings

c) the lengths, widths, and heights

d) the floors

e) the distances and buffer zones

f) the usage figures

3. The Executive Council may, for this purpose, accede to the Intercantonal Agreement on the Harmonization of Construction Terms (IVHB) (RB 40.1117) and declare it binding.

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