ÖNORM B 8110

Area	Construction
title	Thermal insulation in building construction
Brief description	Planning and evaluation of thermal protection structures and thermal protection measures in building construction
Latest edition	see text
ISO

The ÖNORM B 8110 of the Committee 175 " Thermal insulation in building construction " of Austrian Standards International is the set of rules applicable in Austria for specialists in the field of planning and evaluating thermal insulation constructions and thermal insulation measures in building construction. This Austrian set of rules is harmonized with the corresponding standards on the European ( CEN ) and international level ( ISO ).

construction

ÖNORM B 8110 "Thermal insulation in building construction" comprises the following parts (as of March 2020):

Part 1: Declaration of the thermal insulation of low- energy and nearly zero- energy buildings - edition November 1, 2011 ( withdrawal: June 15, 2016 )

Part 2: Water vapor diffusion, convection and protection against condensation - Issue January 1, 2020

Supplement 1: Form for temperature and water vapor diffusion calculation - July 1st, 2003 edition
Supplement 2: Solid building structures - Examples for avoiding surface condensation - Edition April 1, 1997
Supplement 3: Light building structures - Examples for avoiding surface condensation - Edition June 1, 2004
Supplement 4: Instructions for avoiding moisture damage due to room climatic influences - Edition September 1, 2003

Part 3: Determination of the operative temperature in summer (avoidance of overheating in summer) - Edition September 1, 2018

Part 4: Economic optimization of thermal insulation - July 15th 2011 edition

Part 5: Climate model and usage profiles - Edition March 15, 2019

Part 6-1: Basics and verification procedures - heating and cooling requirements - edition January 15, 2019

Part 6-2: Fundamentals and verification procedures - Heating and cooling requirements - Validation examples for heating and cooling requirements - November 1, 2019 edition

Part 7: Tabulated thermal insulation design values - Edition March 15, 2013

Part 8: Tabulated thermal insulation design values of components - Edition April 1st, 2017

scope of application

ÖNORM B 8110 helps the planner, constructor and user of buildings to achieve the (indoor) climatic purpose of buildings as well and as economically as possible. Part 4 also makes it possible to include the maintenance, repair, demolition and restoration of the built-up area in the tendering and selection of construction works.

History of thermal insulation standards

In the building sector, heat is a factor relevant to planning and operation in two ways. On the one hand it may have to be supplied for use (heating), on the other hand there may be a need to dissipate heat in order to be able to fulfill the purpose of buildings (cooling). The building itself must also make a contribution to the economic fulfillment of these tasks. The fulfillment of the purpose is then accomplished by the heating or cooling systems of the building. It should be noted that the heating and cooling costs, viewed over the entire period of use, usually form the predominant part of all costs caused by the building (“life cycle cost”). With the increasing shortage and the associated rise in the price of the energy to be used for this, a diverse range of building materials and constructions was created that aimed at the most efficient use of energy in the building sector.

For the professionals working in this area, a set of rules was subsequently created in Austria to support the planning and execution of buildings that are as energy-efficient as possible.

Conflicts of objectives in thermal insulation standardization

The work of the Technical Standards Committee and the ON Committee was and is characterized by the dispute over the fundamental question of whether the standards developed should only define a minimum standard or a - possibly gradually - to be achieved target quality of thermal protection (such as in the previous system of thermal protection groups) . There are different interests of individual groups in the building materials industry. Likewise, the representatives of the builders of the buildings often have different objectives than the representatives of the (later) users.

Effects of thermal insulation standardization

Construction work

ÖNORM B 8110 is an aid for day-to-day work for building owners, planners and contractors. The standard also regulates the determination of the technical and economic values that are included in the calculations. Due to the large number of standard-compliant computer programs now available, the effort for calculations and verifications has become practical.

Building authorities

ÖNORM B 8110 is used in the vast majority of building approval procedures. ÖNORM B 8110-2 is also often the decisive criterion for finding the cause in legal disputes relating to the mold problem.

Real estate industry

ÖNORM B 8110-1 formed the normative basis for the energy certificate . This is now finding its way into the real estate industry in many European countries.

Energy and Economic Policy

With funding programs for the energy efficiency of buildings, government agencies intend to achieve both agreed climate targets and to reduce building-related energy costs as much as possible for the benefit of users and the domestic economy. The ÖNORM B 8110-4 enables an economic optimization of the thermal insulation in this regard. From an economic point of view, this standard makes it possible to provide the database for the various scenarios of state energy policy.