StructureCraft on Instagram: "MAKING OF // KF Spiral Stair Once the lamination thickness was determined, our fabrication team created a small test portion of the stair to further explore our options with the innovative design concept. We had to approach the creation of this stair not only from an engineering perspective but also a constructability standpoint. Our engineers worked to overcome significant challenges such as predicting the radial and torsional spring-back on the full section based