There is, currently, some risk that iconic buildings could be attacked in this way. Threat analysis of this type is carried out by specialists, but is unlikely to provide useful information for design engineers.
It is therefore more practical to plan such buildings with a view to building in resilience against the loss of supporting elements, whether by fire, blast or impact. This approach is given, in a simple form, in the codes of practice and building regulations.
A new accreditation body for people working in this area is being set up, at present, by the ICE, in the form of the Register of Security Engineers.
DAVID GOODE (M), D J GOODE & ASSOCIATES, THE OLD CONTROL TOWER, LAVENHAM AIRFIELD, OLD BURY ROAD, SUDBURY, SUFFOLK, CO10 9LR