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Other factors such as indoor temperatures, relative humidity, and ventilation levels can also affect how individuals respond to the indoor environment.Understanding the sources of indoor environmental contaminants and controlling them can often help prevent or resolve building-related worker symptoms.Workers are often concerned that they have symptoms or health conditions from exposures to contaminants in the buildings where they work.
Many aspects of building science are the responsibility of the architect (in Canada, many architectural firms employ an architectural technologist for this purpose), often in collaboration with the engineering disciplines that have evolved to handle 'non-building envelope' building science concerns: Civil engineering, Structural engineering, Earthquake engineering, Geotechnical engineering, Mechanical engineering, Electrical engineering, Acoustic engineering, & fire code engineering.
Even the interior designer will inevitably generate a few building science issues.
For example, thermal infrared (IR) imaging devices can be used to measure temperatures of building components while the building is in use.
These measurements can be used to evaluate how the mechanical system is operating and if there are areas of anomalous heat gain or heat loss through the building envelope.
Building science traditionally includes the study of indoor thermal environment, indoor acoustic environment, indoor light environment, indoor air quality, and building resource use, including energy and building material use.
These areas are studied in terms of physical principles, relationship to building occupant health, comfort, and productivity, and how they can be controlled by the building envelope and electrical and mechanical systems.Measurements of conditions in existing buildings are used as part of post occupancy evaluations.Post occupancy evaluations may also include surveys  of building occupants to gather data on occupant satisfaction and well-being and to gather qualitative data on building performance that may not have been captured by measurement devices.Indoor environmental quality (IEQ) refers to the quality of a building's environment in relation to the health and wellbeing of those who occupy space within it.IEQ is determined by many factors, including lighting, air quality, and damp conditions.An array of in-field testing equipment can be used to measure temperature, moisture, sound levels, air pollutants, or other criteria.Standardized procedures for taking these measurements are provided in the Performance Measurement Protocols for Commercial Buildings.Design decisions can be made based on knowledge of building science principles and established guidelines, such as the NIBS Whole Building Design Guide (WBDG) and the collection of ASHRAE Standards related to building science.Computational tools can be used during design to simulate building performance based on input information about the designed building envelope, lighting system, and mechanical system.The role of building simulation is of the foremost importance to meet the requirements of healthy nearly zero energy buildings, to evaluate the level of sustainability of buildings.Among the topics of the IAQVEC 2019 Conference, the topical issue on "IAQ and Indoor Pollution Modelling" addresses: Air quality modelling; Simulation of Heating, Ventilation and Air Conditioning (HVAC); pollution modeling; pollution dispersion; healthy nearly zero energy buildings (ZEB).