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Portal frames, Moment resisting connections, Single storey industrial buildings
- Jun 08, 2018 -

Portal-1.jpgMain articles: Portal frames, Moment resisting connections, Single storey industrial buildings


Portal frames are low-rise structures, comprising columns and rafters, connected by moment-resisting connections. The resistance to lateral and vertical actions is provided by the rigidity of the connections and the bending stiffness of the members, which is increased by a substantial haunch to reinforce the rafter sections. This form of continuous frame is stable in its plane and provides a clear span that is unobstructed by bracing. Bracing is provided in the longitudinal direction, between frames.


Portal frames are structurally efficient and lightweight, accounting for over 90% of the single-storey market in the UK. Portal frames are used for industrial, storage , retail and commercial applications.