Similar to the standard system but utilizing higher capacity jacks, larger yokes, and an upper "grid system" of steel beams to support a third level work platform some 10 feet above the slipform.

Higher capacity jacks means fewer jacks are needed and allows for strategic positioning away from openings, non-continuous walls, and high concentrations of reinforcing steel. Larger yokes means increased yoke spacing for more efficient placement of reinforcing steel, block-outs, inserts, and embedments. The third work platform provides additional material storage space, a means for placing and supporting heavy vertical reinforcing steel, concrete distribution,

and a rigid structure for maintaining slipform plan dimensions, essential for the production of accurately formed concrete. This system is often used for structures with many interior walls such as flour and feed mill buildings and for elevator and stair cores in hi-rise buildings which have many repeated openings.