Environmental design. (Including corrigenda - Dec 2003 and July 2004) (No longer current but cited in Building Regulations guidance)

The production of this Guide is the culmination of considerable effort by a number of dedicated members who have selflessly given their own time that the membership at large may avail themselves of updated technological and intellectual data. This Guide also provides a landmark in the CIBSE publications process as it marks the start of a policy whereby the Guide will be revised on a more regular schedule. This change in policy reflects the more rapidly changing world and the Institution's recognition of the necessity to keep members abreast of technical and legislative developments and the demands associated with European and international standards. Preparation of the next edition is already in hand and this work will be facilitated if members communicate suggestions for amendments, modifications and revisions to the Institution's publications secretariat. Meaningful feedback from members is an essential ingredient of the publications process. Contains significant changes from the previous edition: Section 1: Environmental criteria for design covers the same basic topics of temperature, humidity, lighting and acoustics but each has been extensively revised. The notion of single 'comfort' temperature has been replaced by summertime and wintertime temperature ranges. New section added deal with indoor air quality, air filtration strategy and the electromagnetic and electrostatic environment. Section 2: External design data replaces the former section A2: Weather and solar data. Section 3: Thermal properties of building structures. This section is cited in Part L of the Building Regulations. It has been revised and expanded to include more detailed calculation procedures dealing with various types of window frames and glazing. Section 4: Air infiltration and natural ventilation. Section 5: Thermal response and plant sizing brings together subject areas from former separate guide sections A5, A8 and A9. Section 6: Internal heat gains replaces section A7 of the fifth edition. Section 7: Moisture transfer and condensation replaces section A10 from the fifth edition