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INTERIOR STRUCTURE 113(a)(b)(c)(d)(e)▲ 6.14Different structural layouts affect how spaces are read. (After Ogg)many buildings though, particularly those providing open-plan officeaccommodation, while column grids may be read optimistically asordering space, they are more likely to be spatially disruptive.The influence of spatial structure upon interior spaces of a buildingcan be further appreciated by considering Fig. 6.14. 11 Within an identicalbuilding envelope very different spatial qualities arise by varyinginterior structural layouts, all of which are feasible from a structuralengineering perspective. While the whole internal volume is essentiallyperceived as one space in options (a) and (b), (c) and (d) each providetwo separate and differentiated spatial zones. Option (e) offers theopportunity of creating a closer relationship between the inside andoutside.A similar investigation of alternative structural layouts and their influenceupon interior space can be, and should be performed on anybuilding at the preliminary design stage. Figure 6.15 presents differentlateral-load resisting layouts for a regular four-storey building. Variationsto moment-resisting frames that resist transverse wind and earthquake