The simplest framing system supports the dead weight of the mold and concentrates it on a few load points. 最簡(jiǎn)單的支架系統將承受模具的靜載荷，且將這些載荷集中在一些載荷點(diǎn)上。
Because the cradle system does not require strands to be grouted, they can be individually removed, inspected, and replaced, even when there is traffic on the bridge. 因為支架系統不要求用水泥漿添塞繩股，所以即使是在橋上有車(chē)輛和行人的情況下它們可以被單獨地移除，檢查和替換。
The system includes a backup auxiliary system. 此系統還有一個(gè)后備的輔助系統。
