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How It's Made, Slipform Silos
Posted by Dennis Blauser, November 10, 2021
Following the rise of concrete in the early 1900s, silo construction methods began to expand rapidly from silo cellars to concrete stave silo construction. This silo construction method was followed closely by the development of slipform concrete silo construction. This concrete construction method enabled the creation of a continuous structure that was free from joints and seams.
 
Today, slipform concrete silos are constructed much like they were when the method first appeared. First, a custom-built form system for both the silo interior and exterior is constructed. This includes an interior work deck as well as interior/exterior finishing scaffolding. The form is supported by jack rods that are attached to hydraulic jacks. As the concrete is poured for the silo walls, the form is raised at approximately one foot per hour until the structure is finished.
 
Construction of slipform silos requires an around-the-clock construction schedule as the silo must be finished before construction is halted. The finished product has a smooth outer finish, thanks to the continuous pouring of the concrete silo walls. Slipform construction is usually the method of choice for concrete silos that are more than 65' in diameter, or several concrete silos need to be constructed at once.
 
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