Relatively high values directly at the railway line
Magnetic alternating fields on the building site
A power line in the vicinity of the construction site can have a significant influence on the selection of the land. In the case of the Herbig family from Bamberg/Germany, the power line supplied the railway track with an alternating current of 16 ⅔ Hz. Sven Herbig had inquired about the power stations and received the corresponding information. When measuring the magnetic alternating fields on the building site, the usual experience values were obtained: the load decreases sharply at a distance from the power line. In this case, despite the increasing distance, the measured value remained on a base of 20 nanotesla. This is reason enough for Sven Herbig to investigate the cause of the measurement results together with the instructed measuring technician.
Wall heater combined with clay
Depending on the insulation quality of the house and the height of the flow temperature, a wall heating system needs between 20% and 35% of the living space. However, this is not the only difference to underfloor heating, which generally requires one hundred percent of the living space.
Underfloor heating systems react more slowly to climate changes, require higher flow temperatures and cause dust swirling. As a result of the smaller area requirement, the client saves installation material for wall heating systems, thus lowering the production costs. Wall heaters radiate radiant heat and can be combined with clay or lime. You will find several reasons to deal with this technique in more detail.
bad smell in a prefabricated house
The desire for an affordable property led Henniger family living in Heidelberg (Germany) to an object from the seventies. The floor plan corresponds to the space requirement of the four-headed family and the large garden with the fruit trees invites to play with the children. Jörg Henniger is not blue-eyed. He has read about pollutant problems in this house generation. In this case, however, everything seems different, because a bad smell is not in the air.
Mr. Zenkel on humming search
Customers are calling building-biologist Oliver Zenkel whenever they hear very quiet sounds. The hum is imperceptible with normal hearing. Particularly disturbing is the monotonous and recurring frequency. The person concerned enters a feeling of helplessness. Mr. Zenkel has adjusted to the soft tones and plugged a headset to the sound level meter as technical reinforcement. How the search for the hum can succeed, describe the following examples.
Seepless at night
Sleep disorders are about twenty percent of the reason to ask a building biologist for advice. This resulted in a recent survey among colleagues of German Baubiologie Regional. Takes the insomnia for more than three months, experts speak of a chronic disorder. Sufferers should at least then seek medical advice. Accompanying the medical treatment the building biologist examines physical, chemical or microbial abnormalities at the sleeping place.
Mobile phone study from the US
The results of cellular studies with rats are for those responsible for the US government department National Toxicology Program (NTP) apparently so explosive that they published partial results immediately. Reason for concern are two types of tumors that occurred only in the irradiated animals: malignant brain tumors (gliomas) and schwannoma of the heart. Furthermore, the researchers found an increased incidence of hyperplasia in the experimental animals. This extraordinary increase in the number of cells within a tissue is considered precancerous. Correspondingly high was the echo of the international press on the research results. However, not close at all commentators of NTP assessment. Rather, there is the usual downplaying associated with critical cellular studies.
the highway bridge is the cause of the humming
For months Roland Wernstein (Germany) examines an annoying buzzing sound in his neighborhood: the heating system, bass from the neighborhood, truck engines, vibrations caused by rail or air traffic were suspected, but were rejected. The end of March 2016 he took time for the facts check: the humming was heard only at night and when the wind from the southwest, recalled a distant diesel engine running and had short, miscellaneous long interruptions.
Expert measures with magnetometer
For investigation of sleeping areas, the main concern of the region is below the bed. In a particular case the building biologist found the problem not only on the ground, but primarily at the head of the sleeping quarters. What happened? Manfred Eberlein was not sleep at night after moving into a new apartment in the city center. In the old apartment he slept like a log. A dowser had already changed the roost some eight weeks before. However, this action was not successful.
Example of a LED light spectrum
A low power consumption is not the only criterion
Everyone wants to make an active contribution to climate protection and save energy. To achieve this goal, we can use energy saving devices and energy-saving bulbs in the household. But a low power consumption is not the only criterion when we select an appropriate lighting. Scientific studies have confirmed the importance of natural light to our health now detected. Daylight is optimal for our well-being. It has a harmonious color spectrum (red, green, blue) and a low UV component. The conventional light bulb came the natural color spectrum very close. Only the red component was somewhat increased. Even the light from halogen lamps largely corresponds to the natural spectrum. Another advantage of conventional light bulbs and halogen bulbs is a uniform flicker of 100 Hertz and a small proportion of flickering light.
Sebastian Merkner went only reluctantly to his office. The self-employed carpenter completed Saturdays always his bills because he could then work undisturbed by the daily business. After a few hours in the room he was nervous and felt like charging. Then there were the headaches and eyestrain. The relationship between the office environment and the discomfort was obvious. Merkner went through the possibilities in his head: Was the beams of the wooden ceiling painted with wood preservatives? Escaped from the formaldehyde glued bookshelf? Was the mastic asphalt under the floor covering of the culprit? The master craftsman brooded for months after the causes of his symptoms.