171-2017

Method of Testing for Rating Seismic and Wind Restraints

171-2017 发布历史

This standard is limited in its application and is appropriate only for certain types of restraints made with certain materials@ as defined below. Types of Restraints a. Single-directional@ single-axis@ multiangle (e.g.@ cable restraints that provide tension-only restraint and can be installed at various angles). b. Bidirectional@ single-axis@ multiangle (e.g.@ rigid braces/ restraints). c. Single-directional@ single-axis@ single-angle (e.g.@ bumpers that limit the motion of nonstructural components in one direction). d. Multidirectional@ multiaxis@ with no operating clearance (e.g.@ brackets and other rigid restraints that connect nonstructural components directly to structure). e. Multidirectional@ multiaxis@ with operating clearance (e.g.@ snubbers that limit the motion of nonstructural components in multiple directions). f. Multidirectional@ multiaxis@ with integral isolation (e.g.@ combination isolator estraints that provide vibration isolation for nonstructural components and include a means of multiaxial restraint). Restraint Materials a. Ferrous metals@ including those used in ductile castings@ structural stainless steel@ and structural carbon steel. b. Nonferrous materials such as aluminum@ copper@ and brass. c. Nonmetallic materials such as fiberglass@ elastomer@ natural rubber@ and composites. Not Included in Scope a. This standard does not address the durability of any supported equipment@ or other nonstructural components@ and their ability to remain functional during and at the conclusion of a seismic event. b. This standard does not apply to restraints using nonductile materials. c. Unless otherwise defined@ individual parts used in a complete restraint system assembly are not meant to be tested and rated using this standard. d. Any attachment fasteners and any members in the load path on the structural side of the building-attached components are outside the scope of this standard. e. Any intermediate component support frames or bases between the restraint and the nonstructural component being restrained are outside the scope of this test standard and@ for the purposes of this method@ are considered part of the component. f. This standard is not appropriate for determining the capacity of devices that are used in extreme shock (e.g.@ blast) or long-term dynamic loading applications. PURPOSE This standard provides a test procedure for rating the capacity of seismic and wind restraints for nonstructural components and systems by determining the maximum loads a restraint can withstand without breakage or excessive deformation.

171-2017由ASHRAE - American Society of Heating@ Refrigerating and Air-Conditioning Engineers@ Inc. 发布于 2017-05-31，并于 2017-06-21 实施。

171-2017的历代版本如下：

• 1958年01月01日 171-1958
• 2008年06月21日 171-2008
• 2010年07月01日 171-2010
• 2017年05月31日 171-2017

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标准号

171-2017

发布日期

2017年05月31日

实施日期

2017年06月21日

废止日期

无

中国标准分类号

/

国际标准分类号

/

发布单位

ASHRAE - American Society of Heating@ Refrigerating and Air-Conditioning Engineers@ Inc.

引用标准

18

适用范围

This standard is limited in its application and is appropriate only for certain types of restraints made with certain materials@ as defined below. Types of Restraints a. Single-directional@ single-axis@ multiangle (e.g.@ cable restraints that provide tension-only restraint and can be installed at various angles). b. Bidirectional@ single-axis@ multiangle (e.g.@ rigid braces/ restraints). c. Single-directional@ single-axis@ single-angle (e.g.@ bumpers that limit the motion of nonstructural components in one direction). d. Multidirectional@ multiaxis@ with no operating clearance (e.g.@ brackets and other rigid restraints that connect nonstructural components directly to structure). e. Multidirectional@ multiaxis@ with operating clearance (e.g.@ snubbers that limit the motion of nonstructural components in multiple directions). f. Multidirectional@ multiaxis@ with integral isolation (e.g.@ combination isolator estraints that provide vibration isolation for nonstructural components and include a means of multiaxial restraint). Restraint Materials a. Ferrous metals@ including those used in ductile castings@ structural stainless steel@ and structural carbon steel. b. Nonferrous materials such as aluminum@ copper@ and brass. c. Nonmetallic materials such as fiberglass@ elastomer@ natural rubber@ and composites. Not Included in Scope a. This standard does not address the durability of any supported equipment@ or other nonstructural components@ and their ability to remain functional during and at the conclusion of a seismic event. b. This standard does not apply to restraints using nonductile materials. c. Unless otherwise defined@ individual parts used in a complete restraint system assembly are not meant to be tested and rated using this standard. d. Any attachment fasteners and any members in the load path on the structural side of the building-attached components are outside the scope of this standard. e. Any intermediate component support frames or bases between the restraint and the nonstructural component being restrained are outside the scope of this test standard and@ for the purposes of this method@ are considered part of the component. f. This standard is not appropriate for determining the capacity of devices that are used in extreme shock (e.g.@ blast) or long-term dynamic loading applications. PURPOSE This standard provides a test procedure for rating the capacity of seismic and wind restraints for nonstructural components and systems by determining the maximum loads a restraint can withstand without breakage or excessive deformation.

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