A unique and extraordinary spiral staircase has been constructed in the KF Aerospace Centre for Excellence in Kelowna, BC, Canada. The staircase consists of a timber-concrete composite system (TCC) and spans a length of approximately 70 ft and a height of approximately 23 ft without intermediate supports.
China’s increasing economic development has led to the construction of many large commercial complexes with an increasing demand for escalators with great heights and large spans, without intermediate supports.