Steel Buildings in Europe

Part 4: Detailed Design 4 – 21 L H H u u i i Notation: u Overall horizontal displacement over the building height H . u i Horizontal displacement over a storey height H i Figure 4.1 Definitions of horizontal deflections Table 4.1 Horizontal deflection limits Deflection limits Country u u i Comments France Multi-storey buildings H /300 H i /250 These values should be verified against the deflections calculated from the characteristic combination, unless otherwise agreed with the client. The limit given for u applies for H  30 m. Germany There are no national deflection limits. The limits should be taken from manufacturers’ instructions (technical approvals) or agreed with the client. Spain Multi-storey buildings: In general H /500 H i /300 With fragile partition walls, facades, envelopes or rigid floor finishing elements H i /500 High rise slender buildings (up to 100 m). H /600 These values are given in the national technical document for steel structures [8] and in the Technical Building Code [9] and should be used unless otherwise agreed with the client. 4.4 Vertical deflection limits The definitions of vertical deflections in Annex A1 to EN 1990 [5] are shown in Figure 4.20.