BD2017

The book of proceedings of the 10th International BUILDAIR Symposium "Airtight Buildings, Thermography and Ventilations Systems in Practice",  held on March 31/ April 1, 2017, in Hannover, Germany. Contains 28 abstracts.

Purpose of the work

I have already talked about the issue of airtightness designs in Swiss standards at the Buildair Conference in 2015. What are the challenges we are facing two years later, regarding airtightness in Switzerland? And which of the issues in this context could be of interest for other countries?

Purpose of the work

Based on the results of the FLiB e.V. research project „Evaluation of leakages in airtight layers – Recommendations for action for construction professionals”, testing methods in building practice for the detection, analysis, and evaluation of leakages are put up for discussion.

Method of approach

Purpose of the work

Purpose of the work

Presentation of the advantages of leakage detection using thermography. Which camera systems are suitable for leakage detection via thermography?

Method of approach

Purpose of the work

The pressure differential at the building envelope results from wind pressure and thermal lift. European and German standards include in the calculation of corresponding infiltration the parameters wind speed, temperature differential, and the wind pressure coefficient from building inflow and outflow. This long-term measurement is to compare the calculations to the pressure differentials measured.

Method of approach

Purpose of the work

What is the status quo of airtight building in Germany? Are we well on our way or still far from the target? What about measuring practice in Germany? Should we concentrate on the documentation of measurement results or is it more important to exert a positive influence on the building process overall? Which requirements and targets are set by the legislators, which by the development banks?

Method of approach

Overview, compilation and review of publications.

Content of the contribution

Purpose of the work

By way of practical examples, the presentation shows that decentralized ventilation systems do neither make airtightness measurements more difficult nor distort them, and despite the requirements for a high level of airtightness for buildings also ensure good indoor air quality.

Method of approach

Purpose of the work

Over the past years, the industry has launched a great number of products facilitating the airtight installation of sanitary fixtures in the airtight building envelope. However, the pre-wall mounting racks of cisterns remain a “key point” for assessing the airtightness of pre-walls.

Method of approach

As part of the rehabilitation of an indoor swimming pool, “airtight” pre-wall mounting racks were developed and used. This was due to the flush buttons causing “seepage” of the compound seal.

Purpose of the work

In an air traffic control tower, conditions for thermal comfort are crucial as the task of air traffic control requires high level of attention and vigilance. Comfortable conditions must be guaranteed all the time especially during extreme periods. Therefore, the HVAC system of a control tower is always composed by two, possibly three, identical air handling units, functioning in full redundancy.