Technical Booklet K Ventilation·Page 45·3.11
Extract Ventilation Requirements for Office Areas
Extract ventilation to outside is required for office sanitary accommodation, washrooms, food and beverage preparation areas, and separate rooms containing printers or photocopiers in substantial use, with flow rates not less than those specified in Table 3.1.
Extract to outside is required in all office sanitary accommodation, washrooms and in food and beverage preparation areas. In addition, printers and photocopiers in substantial use (greater than 30 minutes per hour) should be located in a separate room (to avoid any pollutants entering the occupied space) and extract provision installed. The extract flow rates should be not less than those specified in Table 3.1.
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