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ASHRAE 171 08:2008 Edition

ASHRAE 171 08:2008 Edition

$21.13

ASHRAE Standard 171-2008 Method of Testing Seismic Restraint Devices for HVAC&R Equipment (ANSI/ASHRAE Approved)

Published By Publication Date Number of Pages
ASHRAE 2008 14
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PDF Catalog

PDF Pages PDF Title
4 FOREWORD
FOREWORD
1. Purpose
1. Purpose
2. Scope
2. Scope
2.1 Types of Seismic Restraints
2.1 Types of Seismic Restraints
2.2 Types of Materials
2.2 Types of Materials
3. DEFINITIONS
3. DEFINITIONS
5 4. PRECAUTIONS
4. PRECAUTIONS
4.1 Keep in mind that the properties of the test specimen may be changed by any bending, forming, or welding that it is subjected to. It is important to take this possible change into account when determining load values for testing. Otherwise, the t…
4.1 Keep in mind that the properties of the test specimen may be changed by any bending, forming, or welding that it is subjected to. It is important to take this possible change into account when determining load values for testing. Otherwise, the t…
4.2 If any test specimen fails because of mechanical reasons such as failure of the test equipment or improper specimen preparation, it may be discarded and another specimen used.
4.2 If any test specimen fails because of mechanical reasons such as failure of the test equipment or improper specimen preparation, it may be discarded and another specimen used.
5. REQUIREMENTS
5. REQUIREMENTS
5.1 To comply with this standard, the seismic restraint equipment shall be tested to determine the maximum force a restraint can withstand without sustaining breakage or permanent deformation according to the requirements of Sections 6, 7, 8, and 9.
5.1 To comply with this standard, the seismic restraint equipment shall be tested to determine the maximum force a restraint can withstand without sustaining breakage or permanent deformation according to the requirements of Sections 6, 7, 8, and 9.
6. INSTRUMENTS
6. INSTRUMENTS
6.1 Instruments with the degree of accuracy noted below shall be used for the following measurements:
6.1 Instruments with the degree of accuracy noted below shall be used for the following measurements:
6.2 Instruments shall be calibrated at least once per year and a record shall be kept containing, at a minimum, the date of calibration, the method of calibration, and the traceability to national standards.
6.2 Instruments shall be calibrated at least once per year and a record shall be kept containing, at a minimum, the date of calibration, the method of calibration, and the traceability to national standards.
7. TESTING APPARATUS
7. TESTING APPARATUS
7.1 Test Platform. Test fixtures shall provide component attachments to simulate typical field installations as defined by the manufacturer’s installation instructions. Test fixtures and jigs shall be designed such that they neither help nor hinder…
7.1 Test Platform. Test fixtures shall provide component attachments to simulate typical field installations as defined by the manufacturer’s installation instructions. Test fixtures and jigs shall be designed such that they neither help nor hinder…
7.2 Test Setup. Placement of the instrumentation shall be applied to fully measure the maximum effect of the load applied and to minimize the effects of distortion on the test fixture. Restraints shall be attached to the fixtures with hardware capabl…
7.2 Test Setup. Placement of the instrumentation shall be applied to fully measure the maximum effect of the load applied and to minimize the effects of distortion on the test fixture. Restraints shall be attached to the fixtures with hardware capabl…
7.3 Test Fixtures. Test fixtures and jigs shall be designed to hold the specimen in the proper orientation to allow loading in the required direction. Test fixtures shall be rigid enough to prevent distortion of the test fixture and provide specimen …
7.3 Test Fixtures. Test fixtures and jigs shall be designed to hold the specimen in the proper orientation to allow loading in the required direction. Test fixtures shall be rigid enough to prevent distortion of the test fixture and provide specimen …
8. METHODS OF TESTING
8. METHODS OF TESTING
8.1 General. The seismic restraint equipment shall be installed and operated in accordance with the manufacturer’s instructions unless specifically required otherwise by the test method. The seismic restraint equipment shall be equipped with the ap…
8.1 General. The seismic restraint equipment shall be installed and operated in accordance with the manufacturer’s instructions unless specifically required otherwise by the test method. The seismic restraint equipment shall be equipped with the ap…
8.2 Test Environment
8.2 Test Environment
6 9. TEST PROCEDURES
9. TEST PROCEDURES
Figure 1 Cable restraint systems.
Figure 1 Cable restraint systems.
Figure 2 Angular distortion measurements.
Figure 2 Angular distortion measurements.
9.1 Test Procedure for Cable Restraint Systems
9.1 Test Procedure for Cable Restraint Systems
7 9.2 Test Procedure for Combination Isolator/Restraints
9.2 Test Procedure for Combination Isolator/Restraints
Figure 3 Combination isolator/restraints.
Figure 3 Combination isolator/restraints.
8 Figure 4 Vertical tension and compression (Fv).
Figure 4 Vertical tension and compression (Fv).
Figure 6 Horizontal transverse loading (Fy).
Figure 6 Horizontal transverse loading (Fy).
Figure 8 Forty-five degree lateral-vertical load (Fyv).
Figure 8 Forty-five degree lateral-vertical load (Fyv).
Figure 5 Horizontal longitudinal loading (Fx).
Figure 5 Horizontal longitudinal loading (Fx).
Figure 7 Forty-five degree longitudinal-vertical load (Fxv).
Figure 7 Forty-five degree longitudinal-vertical load (Fxv).
Figure 9 Vertical tension and compression (Fv) with linkage bars to resist moments.
Figure 9 Vertical tension and compression (Fv) with linkage bars to resist moments.
9 Figure 10 Snubbers.
Figure 10 Snubbers.
Figure 12 Two-direction horizontal snubber.
Figure 12 Two-direction horizontal snubber.
9.3 Test Procedure for Seismic Snubbers
9.3 Test Procedure for Seismic Snubbers
Figure 11 Two-direction snubber.
Figure 11 Two-direction snubber.
Figure 13 All-directional snubber.
Figure 13 All-directional snubber.
10 Figure 14 Possible test configuration for two-direction snubber.
Figure 14 Possible test configuration for two-direction snubber.
Figure 15 Test arrangement—two-direction snubber.
Figure 15 Test arrangement—two-direction snubber.
11 9.4 Test Procedure for Bumpers
9.4 Test Procedure for Bumpers
Figure 16 Test arrangement—all-directional snubber.
Figure 16 Test arrangement—all-directional snubber.
Figure 17 Bumper.
Figure 17 Bumper.
Figure 18 Bumper used to restrain a nonstructural component.
Figure 18 Bumper used to restrain a nonstructural component.
12 Figure 19 Bumper in testing machine.
Figure 19 Bumper in testing machine.
9.5 Test Procedure for Solid (Rigid) Bracing
9.5 Test Procedure for Solid (Rigid) Bracing
Figure 20 Rigid-brace restraint systems.
Figure 20 Rigid-brace restraint systems.

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