The span for the setting up of the steel plant factory is required particularly be subject to several factors that should not be set arbitrarily. The factors are mainly: 1. Structural design: Structural professionals will undertake structural calculations and analyses to determine the proper span range which will consider factors like plant operation, loading, seismic and wind loads, and others. 2. Foundation conditions: In order to maintain the stability of the structure as well as the safety of the plant, the span is subject to the conditions of the foundation. If the foundation bearing strength is small, the span has to be reduced in such a way. 3. Construction techniques: The operation of bigger spans can result in requiring heaving lifting equipment and intricate construction methods, which will lead to a rise in difficulty and cost of construction. 4. Spans and Benefits Indeed, larger spans may result in more materials and complicated structures consequently leading to higher construction costs. Hence, a sensible scale of spans needs to be estimated through including the construction expenses and the use advantages.