最近几次地震中HVAC&R设备的广泛损坏，强调了限制HVAC&R设备达到或超过抗震规范要求的重要性。美国国家地震工程研究中心（National Center for Seismic Engineering Research）报告，北岭地震导致的40%-80%的重置成本用于非结构部件（NCEER 1994）。此外，机械系统的抗震规范不再是“仅限加利福尼亚州”的问题。所有模型建筑规范都要求机械设备、管道和管道的设计能够承受规定的地震力。因此，无论现场位于东海岸、中西部还是西海岸，都必须解决地震抑制问题。 非结构抗震设计方向的逻辑参考源是建筑规范或抗震指南。然而，人们可能会迷失在提供抗震设计要求和细节的代码、指南和组织的迷宫中。本文将解决一些重要问题，比如:应该使用哪种代码？什么是抗震设计力？在加利福尼亚以外的州，真正需要多少约束（如果有的话）？有哪些指导方针和行业标准？本文将通过解释模型代码的历史和影响它们的主体，讨论可用的指南，并强调代码和指南之间的差异，引导您了解有时会令人困惑的代码和指南。 它还将涉及ASHRAE成员应该了解的代码的未来方向。单位:I-PCITION:研讨会论文，佐治亚州亚特兰大，2001年

The importance of restraining HVAC&R equipment to meet or exceed seismic code requirements has been emphasized by the extensive damage to HVAC&R equipment in recent earthquakes. The National Center for Earthquake Engineering Research reported 40%-80% of replacement costs resulting from the Northridge earthquake were for nonstructural components (NCEER 1994). Furthermore, seismic codes for mechanical systems are no longer a "California only" issue. All the model building codes require mechanical equipment, piping, and duct to be designed to withstand prescribed seismic forces. Therefore, whether a site is on the East Coast, in the Midwest, or on the West Coast, seismic restraint must be addressed. Logical sources to reference for direction in nonstructural seismic restraint design are building codes or seismic restraint guides. However, one can get lost in the maze of codes, guides, and organizations that provide seismic design requirements and details. This article will address important questions such as: Which code should be used? What are the seismic design forces? How much restraint (if any) is really needed in states other than California? What are some guidelines and industry standards? This paper will guide you through the sometimes confusing lot of codes and guidelines by explaining the history of the model codes and the bodies that influence them, discussing available guides, and highlighting the difference between code and a guide. It will also touch on the future direction of the codes of which ASHRAE members should be aware.Units: I-P