Topics

Noises generated when gases, vapours and liquids flow through control valves. Valve noise is mainly radiated via the connected pipework system. Owing to the large number of control valves in industrial plants and…

During brake tests or when braking, air escapes suddenly from the brake air system via the valves. This sudden release of air can cause very loud noise both inside and outside the vehicle.

When warm exhaust air rich in water vapour (for example, from a cooling tower, a drying plant or a chimney) is released, it may mix with cooler outside air, leading to condensation and thus the formation of water…

Classification of low-vibration installation sites for sensitive equipment. VC-0 lies approximately within the perceptibility threshold range. From VC-A onwards, the permissible amplitudes are halved for each…

This is a guideline that provides a self-assessment system based on a maturity model for occupational health and safety management within organisations (‘OH&S Leading Indicators’), with the aim of continuously…

This guideline sets out general rules to be observed when planning metrological investigations of air pollution outside buildings and vehicles. 

Noise from railway vehicles during the stabling phase. Contains proposals for noise limit values for railway vehicles during the stabling phase, as well as a description of the operating conditions to be taken into…

Noise from rail vehicles used in public transport (ÖPNV) in accordance with BOStrab. It includes, among other things, proposals for noise limit values for rail vehicles used in local transport (trams, underground…

Spatial objects represented in the form of points, lines or polygons, which may contain additional information. For example: .shp, .kml/.xml/.gml, .geojson, .qsi, .dwg/.dxf.

In rail vehicles, fans are used to cool drive systems and compressors, and for air conditioning the vehicle interior. These noise components are generally only relevant when the vehicle is at a standstill. …

The verification of combustion conditions in accordance with the 17th BImSchV involves checking compliance with the minimum combustion temperature, the minimum residence time and compliance with the mixing…

Vibration emissions are mechanical vibrations emanating from a vibration source which propagate through the ground or through structures and may affect neighbouring structures or people.

Calculation of the propagation of vibrations and their effects on buildings, people or equipment/machinery within buildings using theoretical models and/or based on vibration measurements.

Vibrations acting on a specific point.

Vibration measurements are used to record and evaluate vibrations in machinery, structures or the ground. They are used, among other things, in site assessments, building design, machinery installation,…

Vibration monitoring allows the vibrations affecting sensitive structures (e.g. IT equipment, production facilities, listed buildings) to be recorded and compared against specified limit values. The measurement…

A (heavy) concrete foundation mounted on elastic supports, designed as a vibration-reduction measure; its dynamic properties reduce vibration amplitudes across a broad frequency range.

Mechanical vibrations that may be perceived as disturbing, affect the operation of equipment or machinery, or have a potentially damaging effect on building structures.

Intentional or unintentional periodic movements of bodies (or components).

Unintended or intended periodic movements of bodies or components.

Vibrations at the workplace that are capable of causing harmful effects to the whole body or the hand-arm system of workers.

Video quality describes the overall perception of a video, which is influenced by factors such as resolution, frame rate, compression artefacts, sharpness, contrast, colour reproduction and noise levels. …

Describes how image quality changes when viewing the display from different angles.

Reference point for identifying structural properties at interfaces in up to 6 degrees of freedom.

The visual representation of data.

VOCs are volatile organic compounds. They can be analysed using GC-MS, for example.

Solvents found in many building and renovation materials, adhesives, paints and varnishes, cleaning products, components of petrol and heating oil, turpentine oil, fragrances and many others. …

Structural oscillations excited by periodic vortex shedding transverse to the direction of flow.