Austrian Institute of Construction Engineering (OIB) Guideline

Last updated: 11 June 2019

The OIB Guidelines serve to harmonise the construction engineering regulations in Austria. They are issued by the Austrian Institute for Construction Engineering upon decision in the General Assembly and are thus available to the federal states. The federal states may declare OIB Guidelines as binding in their building codes, which is already the case in all federal states (see table). However, the OIB Guidelines may be deviated from in accordance with the provisions of the relevant regulations of the federal states, if it is demonstrated that an equivalent level of protection in compliance with the OIB guidelines is achieved. This is intended to ensure the necessary flexibility for innovative architectural and technical solutions.

The OIB Guidelines follow the concept of performance-oriented building requirements.

Development Authority:OIB (Austrian Institute of Construction Engineering) with the nine federal Länder and the Ministry of Economy, Family and Youth

Implementation, Verification and enforcement Authority: Local authorities

Insulation Energy Requirements: Max UValue for insulated walls 0.35

Windows Energy Requirements:Max UValue < 2.50 (W/m2.K)

Doors Energy Requirements: Max UValue < 2.50 (W/m2.K)

Skylights Energy Requirements: Max UValue < 1.70 (W/m2.K)

Space Heating System Requirements: Heating demand for new residential buildings

Before 31/12/2009 total energy use < 78 kWh/m2/year

After 01/01/2010 total energy use < 66.5 kWh/m2/year

Heating demand for renovations on existing residential buildings

Before 31/12/2009 total energy use < 102 kWh/m2/year

After 01/01/2010 total energy use < 87.5 kWh/m2/year

Heating demand for new non-residential buildings

Before 31/12/2009 total energy use < 27 kWh/m2/year

After 01/01/2010 total energy use < 22.75 kWh/m2/year

Heating demand for renovations on non-residential buildings

Before 31/12/2009 total energy use < 33 kWh/m2/year

After 01/01/2010 total energy use < 30 kWh/m2/year

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End uses covered
  • Building end-uses
  • Building systems
  • Space heating
  • Ventilation
  • Water heating
  • Lighting
  • Interior lighting
  • Building vintage
  • Existing buildings
  • New buildings
  • Building envelope
  • Other