NATURAL AND MECHANICAL VENTILATION MOHAMAD TAJUDIN BIN SAIDIN

NATURAL AND MECHANICAL VENTILATION MOHAMAD TAJUDIN BIN SAIDIN A 365 016 -2970371 tajudinsaidin@uitm. edu. my

Installing weatherproof vents to passively ventilate attic spaces in hot climates is an important design strategy that is often overlooked. In addition to simply preventing overheating 1, ventilated attics can use these principles to actually help cool a building. There are several styles of passive roof vents: Open stack, turbine, gable, and ridge vents -

Turbine vents Gable vents Ridge vents

The term "sick building syndrome" (SBS) is used to describe situations in which building occupants experience acute health and comfort effects that appear to be linked to time spent in a building, but no specific illness or cause can be identified. The complaints may be localized in a particular room or zone, or may be widespread throughout the building. In contrast, the term "building related illness" (BRI) is used when symptoms of diagnosable illness are identified and can be attributed directly to airborne building contaminants.

Indicators; Building occupants complain of symptoms such as cough; chest tightness; fever. Prolonged recovery

Vary airflow, constant temperature Constant airflow, variable temperature