What is the Canadian General Standards Board (CGSB) Standard 149.10 used for?

The Canadian General Standards Board (CGSB) Standard 149.10 is specifically focused on the "Determination of airtightness by fan pressurization." This standard provides a methodology for measuring how air-tight a building is, which is crucial for understanding energy efficiency and indoor air quality. Airtightness is a vital aspect of building performance since leaks can lead to energy loss, increased utility costs, and potential moisture problems. By using fan pressurization, practitioners can perform tests to quantify the amount of air that leaks in and out of a building, which informs designers and builders about the effectiveness of the building envelope and helps guide improvements.

Other options, while relevant to various aspects of construction and building performance, do not pertain to the specific focus of CGSB Standard 149.10. For example, noise reduction in buildings is handled under different standards and guidelines, sizing HVAC systems involves calculations based on occupancy and load factors, and quality assurance in construction materials relates to compliance and performance specifications not covered under this particular standard.