PCI MNL-124-11的目的是协助设计预制预应力混凝土结构的耐火性。根据ICC-ES评估报告ESR-1997，可使用本手册设计耐火等级的预制/预应力混凝土结构，作为2006年IBC第703.3节和1997年UBC第703.3节规定的替代方法。自第二版以来，我们经历和学到了很多东西，因此需要将手册更新到当前状态。为了澄清文本，已经改写了几个部分，并添加了一些新材料，但没有任何改变会影响手册的性质。

The purpose of PCI MNL-124-11 is to assist in the design for fire resistance of precast prestressed concrete structures. According to the ICC-ES Evaluation Report ESR-1997, fire-resistance-rated precast/prestressed concrete construction may be designed using this manual as an alternative method to what is specified in the 2006 IBC Section 703.3 and the 1997 UBC Section 703.3. Since the 2nd edition, much has been experienced and learned, resulting in the need for updating the manual to its current status. Several parts have been rewritten to clarify the text and some new material has been added, but nothing has been changed that would affect the character of the manual.