Steel Buildings in Europe

Part 2: Concept Design 2 - 6 Figure 1.5 Curved cellular beams used in a leisure centre Figure 1.6 External structure supporting a single storey building 1.3 Choice of building type Portal frames are considered to be a highly cost-effective way to provide a single storey enclosure. Their efficiency depends on the method of analysis, and the assumptions that are made regarding the restraint to the structural members, as shown in Table 1.2. The assumptions about member stability may vary between countries.