Radioactivity in building materials önorm s 5200: a standard in Austria to limit natural radioactivity in building materials (revised and definite version)

The Austrian Standard ÖNORM S 5200, prepared in the early nineties after a prestandard phase (Steger F.) and in use in Austria since 1996, provides the criteria to assess the radiation dose of building materials. Gamma radiation of the radionuclides 40K,

Occupancy Calculation for the Control of Mechanical Ventilation

Ventilation is essential for health and comfort of building occupants. It is particularly required to diluteand/or remove pollutants emitted by occupants metabolism. The concentration of metabolic CO2 iswell correlated to metabolic odor intensity. Therefore CO2 concentration can be efficiently chosen asan indoor air quality indicator when occupants are the main pollution source inside the buildings.

Derivation of CO2 control set points from air quality requirements

A CO2 level of 1000 ppm is very often used as reference for control and design of ventilation flow rates in buildings. This level is well accepted in practice, and is thus normally not given any further considerations. To retain 1000 ppm CO2 in a room with fully mixed flow conditions, a flow rate of 7 liters/sec per person must be supplied. In many countries, national regulations and standards prescribe flow rates for comfort ventilation that are significantly higher than 7 l/s.

International workshop on implementation of European directive on energy performance of buildings

As part of the European SAVE project ENPER, an international workshop on the implementation of the European Energy Performance Directive (EPD) was organised in Brussels on May, 19. Some 115 delegates from 21 countries attended this workshop. This directive obliges the Member states as well as the 10 candidate members to implement a range of regulatory measures regarding the energy performance assessment and certification of buildings. Presentations were made by the people listed above in the author grid.

Air quality in working areas. Some regulation aspects and prevention.

In France, air quality in working areas is a matter of preoccupation for both the industry and the welfare state, that is in charge with the application of the rules and regulations in that field. The Labour Legislation and the Institution of Prevention, bring advice and assistance to the companies and final users.20 practical guides dealing with ventilation are listed at the end of the article.

Mechanical ventilation in the new german regulation EnEV 2002 Maschinelle Wohnngslüftung vor dem Hinter-grund der Energieeinsparverordnung 2002

This article compares the requirements for mechanical ventilation systems in the new German regulation on energy savings (EnEV 2002) with those contained in the previous regulation (named WSchV 1995). It also gives information about the way to test and certify mechanical ventilation components according to this new regulation.

Training CD about the New French Thermal Regulations Réglementation Thermique 2000 - Mallette de formation

This CD gives information to understand and apply the new French Thermal Regulations RT 2000, which are applicable to new residential and commercial buildings and which mainly concern the calculation of energy consumption of buildings and comparison with reference values.
The CD includes the official texts of the regulations, a slide presentation of the regulations, software tools enabling the user to make sensitivity analysis of the calculation results to various parameters of the building.