前言:这是CAN/CSA-S37《天线、塔和天线支撑结构》的第八版。它取代了2013年、2001年、1994年、1986年、1981年、1976年和1965年出版的之前版本。以下是本版本中一些更重要更改的列表:a）增加了第4.6条，以便在已知未来天线荷载组合的结构分析中加以考虑。b） 增加了第5.3.4条，其中建议将离散附件安装在结构上的荷载工况持续4个月或更短时间。c） 风速压力qh被重新定义。 d） 对于附加形状的附件，包括阻力系数Cd。e） 添加有效投影面积公式，以考虑垂直于风向的荷载。f） 单极结构风荷载计算中Cg 2.5的消除。根据规范性附录N.g），新的荷载组合WF（疲劳荷载组合）将考虑单极子和带罩的黎波里对风的动态响应。增加了第7.3.8条，以提供连接板的系数阻力公式。 h） 对阻力系数公式进行了修订，以包括未安装高强度灌浆的锚杆的弯矩。i） 增加了第7.5.8条，包括U型螺栓材料、安装、扭矩和设计建议。j） 增加第11.2.2条是为了在拉线锚轴分析和设计中考虑拉线合成角的变化。k） 强调现有塔架上施工荷载的额外工程，以及临时施工风速指南。l） 符合《加拿大劳工法典》中关于防坠器和垂直刚性轨道负载要求的建议。 m） 对合格攀岩者提出了额外要求。n） 还提供了关于拉线锚固防腐的其他建议（附录F）。o） 还提供了岩土工程现场调查的其他建议，包括腐蚀性土壤的要求（附录L）。p） 还提供了关于塔架状态评估的其他建议，以强调初始施工检查和关键信息记录的重要性（附件D）。本标准的评注见附录K和S。CSA集团承认，本标准的制定部分是由贝尔、加拿大海军部、水电公司的财务支持实现的- 魁北克省、罗杰斯通讯Cda公司、加拿大广播公司安大略省、西北航空公司、泰勒斯和Videotron。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。范围:1.1概述本标准适用于结构天线、塔架、天线支撑结构、屋顶和墙壁安装结构，包括其部件，如拉线和基础。它包括新结构的结构设计、制造和安装，以及现有结构的改造。 1.2例外情况本标准不适用于（a）连接天线和此类天线的阵列或组件；orb）支撑连接天线的塔架，其在地面上延伸不到15米，包括安装天线的任何结构的高度。1.3不寻常设计和天线本标准涵盖了大多数结构天线、天线塔和天线支撑结构的要求，但公认的是，在高度或形状、单个构件的形状和尺寸方面不寻常的结构，或位于具有不寻常地形、地质、，或者气候条件可能没有得到充分的覆盖。 在这种情况下，应采用适当的工程原理，其可靠性至少相当于本标准规定的可靠性水平。1.4风的动态效应除了附录N的要求外，本标准不包含考虑风的动态效应的强制性要求。1.5其他设计方法业主和监管机构可接受的基于理论、分析和工程实践的合理设计，可替代本标准中描述的设计程序或材料。 在这种情况下，设计应由具有特定方法资质并熟悉所用材料的工程师编制，并应提供不低于本标准中隐含的安全和性能水平。1.6地方、省和联邦法规遵守本标准并不免除遵守所有适用的地方、省和联邦法规的责任。1.7本标准中的术语“应”用于表示要求，即用户为遵守本标准而有义务满足的规定； “应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）- 必须）定义其应用程序。

Preface:This is the eighth edition of CAN/CSA-S37,Antennas, towers, and antenna-supporting structures. It supersedes the previous editions published in 2013, 2001, 1994, 1986, 1981, 1976, and 1965.The following is a list of some of the more important changes made in this edition:a) Clause 4.6 was added for consideration in the structural analysis of known future antenna loading combinations.b) Clause 5.3.4 was added with recommendations for load cases with discrete attachments installed on a structure for a period of 4 months or less.c) The wind velocity pressure, qh, was redefined.d) The inclusion of drag coefficients, Cd, for attachments of additional shapes.e) The addition of an effective projected area formula to account for loads normal to the wind direction.f) The elimination of the Cg of 2.5 in the calculation of the wind load of monopole structures. The dynamic response to wind for monopoles and shrouded tripoles will be taken into account by the new load combination WF (fatigue loading combination) in accordance with a normative Annex N.g) Clause 7.3.8 was added to provide factored resistance formulas for link plates.h) The factor resistance formulas were revised to include bending moments of anchor rods installed without high strength grout.i) Clause 7.5.8 was added to include U-bolt material, installation, torqueing, and design recommendations.j) Clause 11.2.2 was added for consideration of guy resultant angle variations in guy anchor shaft analysis and design.k) Emphasis on additional engineering for construction loads on existing towers and guidance on temporary construction wind speed.l) Alignment with recommendations from Canada Labour Code on load requirements for fall arrestors and vertical rigid rails.m) Additional requirements for qualified climbers were provided.n) Additional recommendations on corrosion protection of guy anchorages (Annex F) were provided.o) Additional recommendations for geotechnical site investigation to include requirements for corrosive soils (Annex L) were provided.p) Additional recommendations for tower condition assessment to emphasize importance of initial construction inspections and the recording of critical information (Annex D) were provided.A commentary on this Standard is found in Annexes K and S.CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of Bell, Nav Canada, Hydro-Québec, Rogers Communication Cda Inc., CBC Ontario, NorthWesTel Inc., Telus, and Videotron.This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope:1.1 GeneralThis Standard applies to structural antennas, towers, antenna-supporting structures, and roof- and wall- mounted structures, including their components, such as guys and foundations. It covers the structural design, fabrication, and erection of new structures and the modification of existing structures.1.2 ExclusionsThis Standard is not intended to apply toa) attachment antennas and arrays or assemblies of such antennas; orb) towers that support attachment antennas, extending less than 15 m above grade, including the height of any structure on which they are mounted.1.3 Unusual designs and antennasThis Standard covers the requirements for most structural antennas, antenna towers, and antenna- supporting structures, but it is recognized that structures that are unusual with regard to their height or shape, or with regard to the shape and size of individual members, or that are located on sites having unusual topographical, geological, or climatic conditions might not be adequately covered. In such cases, appropriate engineering principles providing a level of reliability at least equivalent to that provided by this Standard should be applied.1.4 Dynamic effects of windOther than the requirements of Annex N, this Standard does not contain mandatory requirements that take into account the dynamic effects of wind.1.5 Other design approachesA rational design based on theory, analysis, and engineering practice, acceptable to the owner and regulatory authority, may be used in lieu of the design procedures or materials described in this Standard. In such cases, the design should be prepared by an engineer qualified in the specific method and knowledgeable about the materials to be used, and should provide a level of safety and performance that is not less than that implicit in this Standard.1.6 Local, provincial, and federal regulationsResponsibility for observing all applicable local, provincial, and federal regulations is not relieved by compliance with this Standard.1.7 TerminologyIn this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.