Emergencies requiring food relief are sadly a regular
occurrence, especially in Africa. The various structures required to store this
food have been evaluated (O'Dowd et al., 1988). Relief workers reported that
although plastic-clad steel frame stores were easy to erect and relocate, this
type of structure was vulnerable to wind damage (see Frontispiece). Twenty have
recently been destroyed by wind in three disaster areas: Mali, Uganda and Sudan.
(Hodges, 1987; Timpson, 1987; Fortman, 1987). Although open door
flaps/ventilators and poor foundations certainly contributed, it is also likely
that under-design was to blame; it is known that at least two manufacturers used
design wind speeds suited to the United Kingdom rather than to the Sahel.
Another manufacturer uses the British Standards Institution Code of Practice CP3
(1972), applicable to rigid structures, for inflatable warehouses which are
flexible. In this supplement the nature of wind damage and how design procedures
can be improved are