1 / 12

Sick buildings

Sick buildings. Diagnosis and treatment 7y790. MAC. The maximally allowed concentration (MAC) of a gaseous substance is that concentration in the air of a working environment that in general According to current knowledge; Even at repeated and long-term exposure;

jason
Download Presentation

Sick buildings

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Sick buildings Diagnosis and treatment 7y790 JEMH van Bronswijk TU/e

  2. MAC The maximally allowed concentration (MAC) of a gaseous substance is that concentration in the air of a working environment that in general • According to current knowledge; • Even at repeated and long-term exposure; • During the full working life; will not harm the health of workers nor that of their descendants [Nationale MAC-commissie 1978] MAC-TGG = tijdgewogen gemiddelde / time weighted mean MAC-C = peak concentration JEMH van Bronswijk TU/e

  3. Some general hygienic limits JEMH van Bronswijk TU/e

  4. Health damage & buildings • Sick building syndrome (SBS) = occupants experience acute health and comfort effects that are linked to time spent in a building; no specific illness or cause can be identified • Building related illness (BRI) = occupant shows symptoms of diagnosable illness that can be attributed directly to airborne building contaminants Source: Environmental Protection Agency USA: http://epa.gov/iaq/pubs/sbs.html JEMH van Bronswijk TU/e

  5. Sick Building Syndrome a collection of certain specific complaints and symptoms experienced by workers during or after a stay in certain building spaces Source: E Eyskens, L Feenstra, AE Meinders (eds) 1991. Codex Medicus. Elsevier, Amsterdam. ISBN 90-6228-183-4 JEMH van Bronswijk TU/e

  6. Sick Building Symptoms • Dry eyes • Dry throat • Headache • Dry skin • Mucous membrane irritation • Lethargy • Asthmatic symptoms JEMH van Bronswijk TU/e

  7. Additive effects Example: Pollution by a Laser printer C = Concentration in the Air; MAC = MAC value: Ozon: 0.1 ppm; Carbon monoxide: 25 ppm; airborne dust (stof) 0.05 mg / m3 air JEMH van Bronswijk TU/e

  8. A Sick Building • forms an environment that adheres to relevant standards but does not fully answer to the human need for: • - Absence ofPathogens • - Absence of other biotic, chemical or physicalPollutants • - ThermalComfort • LightingComfort • AcousticComfort • - SufficientSpace, Privacy, Peace and Quiet • Contactwith outdoors (view, sound, smell, air quality) • Source: PA Vroon 1991. Ziekmakende Gebouwen en de evolutie van de mens. • Bouwfysica 2(2):18-25; E Eyskens, L Feenstra, AE Meinders (eds) 1991. • Codex Medicus. Elsevier, Amsterdam. ISBN 90-6228-183-4 JEMH van Bronswijk TU/e

  9. A Healthy Building forms an environment that - Has a Low Risk for negative health effects - Makes Healthy Behaviour self-evident - Compensates for disease or infirmity present - Stimulates users to realise their ambitions - Leaves Users Master of the situation JEMH van Bronswijk TU/e

  10. Building Assessment Building-in-use method = repeated questionnaires JEMH van Bronswijk TU/e

  11. “General” measurements • Carbon dioxide • Carbon monoxide • Water vapour • Airborne dust • Pay attention to the following: • Peak values may be more important than averages • Measure continuously for 7-10 days • Measure outdoor and indoor concurrently • Combine physical values with a complaint diary JEMH van Bronswijk TU/e

  12. Building services design(also for dwellings) • Robust • Locus of control = user • Automated when desired by user • Sensors for CO, CO2, energy use, …. • Automated safety actions always with explanation to the users • Action options for the user JEMH van Bronswijk TU/e

More Related