Al Ameen Steel Fabrication Engineering has been making specially designed steel gates, spiral cases and hand rails for many years. One of the challenging among them is the spiral staircase due to it's complexity and the amount of work involved with the stair cases.
There are many challenges in making custom stairs as certain measurements have to be made or kept in mind before creating spiral around steel tank. One of the challenges is measuring the curvature of the stair stingers which is two part steel structure that holds the stair threads together. The stingers must be put together carefully in exact matching curvature perpendicular to the first curve in the arc that is located at precise height at the right exact position in the tank.