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Steel Designers' Manual - 6th Edition (2003)
pressure level is high enough to provide sufficient driving force to draw air in and
out of the building.
It may be necessary to add an atrium to an existing building if the shape of the
building is outside the limits for cross ventilation (15 m deep).This allows for natural
ventilation to all areas, improved natural light penetration and beneficial effects on
internal circulation.
5.5.4.4 Smoke
Smoke control can require a large space at the top of the atrium to act as a smoke
reservoir. This reduces the amount of smoke moving into upper floors and allows
for full evacuation of the building. Extraction of toxic gases can be by means of
mechanical and/or natural vents located at the top of the atrium. Smoke venting via
the atrium can be achieved by taking advantage of the strong buoyancy of smoke,
but the use of channelling screens may be necessary. For instance, automatic window
or curtain closing on the atrium perimeter can be used as a screen mechanism.
References to Chapter 5
References 219
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practice for loading. BS 8100, BSI, London.
2. British Standards Institution (1972) Loading. Chapter V: Part 2: Wind loads.
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3. Construction Industry Research and Information Association (CIRIA) (1980)
Wind Engineering in the Eighties. CIRIA Conference Report 12/13 Nov.
4. Engineering Sciences Data Unit. Wind engineering sub-series (4 volumes).
ESDU International, London.
5. Vickery B.J. & Basu R.I. (1983) Across wind vibrations of structures of circular
cross section. Journal of Wind Engineering and Industrial Aerodynamics, 12,
49–97.
6. International Association for Shell and Spatial Structures (IASS) (1981) IASS
Recommendations for Guyed Masts. IASS, Madrid.
7. Nooshin H. & Disney P. (1989) Elements of Formian. Proceedings of 4th Intl
Conf. Civ. and Struct. Engng Computing (Ed. by H. Nooshin), pp. 528–32.
University of Surrey, Guildford, UK.
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Studies in Space Structures (Ed. by H. Nooshin), pp. 153–79. Multi-Science
Publishers.
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using light steel framing: Design of residential buildings. SCI-P302. The Steel
Construction Institute, Ascot, Berks.