[en] Each toroidal field (TF) coil in the TFTR device experiences 6.1 million pounds of centering force and 104.5 million inch pounds of overturning moment. The TF coil is restrained by the combined action of the Inner Support Structure and the shear/compression panels. The placement and relative stiffness of the restraining structure affects the stress levels in the TF coils. To meet the design goal of 300,000 cycles of operation at full power it was necessary to optimize the restraint structure's performance. After several studies, it was decided that the inplane centering force on the coil would be distributed so that 82% appeared at the ISS and 18% on the shear compression panels. It was also decided that the distribution of overturning moment would be such that 20% would be reacted by the ISS and 80% reacted by the shear compression panels. This distribution is not the optimum but represents the best compromise of available space, schedule and funding. 1 ref