Detailed construction: iron, steel and other metals
Fire escape construction is generally a mundane affair, with column supports for framed landings and dog-leg flights spanning as infill (Figures 7.2c and 7.2d). Detailing with structural sections requires skill to overcome clumsiness at connecting points. Salvisberg's detailing is exemplary in the instance chosen where members are splayed or cut to ensure a neat geometry. The construction
is conventional using 12.5 mm plate for strings and 105 mm × 105 mm tees with tubular rails (Figure 7.2e). Arne Jacobsen has solved the problem of an obtrusive external stair by encasing in a cylinder of fire resisting glazing (Figure 7.2f).