In a curved double stringer system, each stringer acts as a curved beam, resisting both vertical loads and torsional forces induced by the helix. Key structural considerations include:
Before falling in love with this design, there are practical hurdles to consider:
Steel is incredibly strong relative to its weight. Two curved steel stringers provide immense support, meaning you rarely need a central support post. This allows for longer spans and wider steps without "bounce" or flexing.
