on the member. Connections are also verified by reference to
rotation limits. To ensure overall frame stability, inter-storey drift
and frame member rotation limits are imposed.
Member capacity checks are performed in accordance with BS
EN1993-1-1. This is modified in some cases to allow for the large
deformations that may be tolerated in the case of blast response.
Furthermore, the verification of columns in braced bays is modified
as per BS EN1998-1 to ensure that the columns can resist the
additional forces transmitted to them by the bracing members.
The design guide is illustrated by a series of design examples
based on the reference building. They include two explosion
scenarios of different severity and the design verification of (a) a
lintel supporting building cladding, (b) a composite floor and (c)
the overall assessment of the building frame and the redesign of
the bracing and columns to resist the more severe of the two blast
The project was funded by the European Union’s Research
Fund for Coal and Steel (RFCS) under grant agreement no.
RFSR-CT-2013-00020 and the UK Centre for the Protection of
the National Infrastructure (CPNI).