通过钢和混凝土框架的热桥接导致热阻降低，这可能对整个建筑的节能性能产生重大影响。建筑围护结构热性能的不确定性可能导致HVAC系统的设计效率低下、建筑运行效率低下、部件交叉处的抗冷凝能力不足，以及乘员舒适性受损。ASHRAE 1365-RP的目标是为中高层建筑提供40个常见建筑围护结构细节的热性能数据。该项目的目标是制定程序和目录，允许设计师快速、直接地获取信息，但具有足够的复杂性和准确性，以减少建筑围护结构组件热性能的不确定性。

The reduced thermal resistance due to thermal bridging through steel and concrete framing can have a significant impact on the whole building energy performance. Uncertainty about the thermal performance of the building envelope can lead to inefficient design of HVACsystems, building operation inefficiencies, inadequate condensation resistance at intersections of components and compromised occupant comfort. ASHRAE 1365-RP's objective was to provide thermal performance data of 40 common building envelope details for mid- and high-rise construction. The goal of the project was to develop procedures and a catalogue that will allow designers quick and straightforward access to information but with sufficient complexity and accuracy to reduce uncertainty in the thermal performance of building envelope components.