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ASME RT 2 2021

ASME RT 2 2021

$98.04

ASME RT-2 – 2021 Safety Standard for Structural Requirements for Heavy Rail Transit Vehicles

Published By Publication Date Number of Pages
ASME 2021 27
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This standard applies to carbodies of newly constructed heavy rail transit vehicles for transit passenger service. It defines requirements for the incorporation of passive safety design concepts related to the performance of the carbody of heavy rail transit vehicles in conditions such as collisions, so as to enhance passenger safety, and limit and control damage. This Standard does not cover light rail vehicles, automated people movers, and freight, commuter, or high speed rail vehicles. It does not cover structural repairs, fatigue, corrosion, fire protection, interior vehicle design or emergency egress from vehicle. RT-2-2021 Safety Standard for Structural Requirements for Heavy Rail Transit Vehicles, arose from an industry groundswell to address the heavier-duty carbody requirements of North America versus those of Europe (which are governed by European standards EN12663, EN15663 and EN15227.) This Standard is unique for utilizing Crash Energy Management (CEM) protocols. CEM represents the latest best-practices of design, testing, analysis and manufacture—enhancing crashworthiness by assigning certain sections of the carbody the task of absorbing a portion of the energy of collision by crushing in a controlled manner. Proper application of CEM preserves occupant volume, while minimizing the consequences of occupant impacts with the vehicle interior. Production efficiencies may also be realized via CEM. Intended for rail-transit carbody manufacturers and their suppliers of components and raw materials, as well as the owners and operators of rail-transit systems, plus all potential governing entities.

PDF Catalog

PDF Pages PDF Title
4 CONTENTS
5 FOREWORD
6 ASME RTV COMMITTEE ROSTER
7 CORRESPONDENCE WITH THE RTV COMMITTEE
9 INTRODUCTION
10 ASME RT-2–2021 SUMMARY OF CHANGES
12 1 SCOPE
1.1 Subjects Not Addressed by This Standard
1.2 Effective Date
2 DEFINITIONS
14 3 INTEROPERABILITY
3.1 Anticlimber and Coupler Interface
3.2 Multiple Unit Operation
4 STRUCTURAL REQUIREMENTS
4.1 Welding
4.2 Articulation
4.3 Design Parameter Tolerance
4.4 Demonstration of Strength and Structural Stability
4.5 Truck to Carbody Attachment
15 Tables
Table 4-1 Structural Load Requirements for Heavy Rail Transit Vehicles
18 4.6 Collision and Corner Posts
4.7 Collision Wall
4.8 Open Gangways
4.9 Crashworthiness
19 5 DESIGN LOADS AND ASSESSMENT CRITERIA
Figure
Figure 4.8-1 Gangway Configuration
Table 4.9-1 Crashworthiness for Heavy Rail Transit Vehicles
20 6 COUPLER SYSTEM
7 STRUCTURAL MATERIALS
7.1 Austenitic Stainless Steel
7.2 Low Alloy High Tensile Steel
7.3 Aluminum
7.4 Nonmetallic Materials
8 CRASH ENERGY MANAGEMENT (CEM)
9 ANALYSIS
21 9.1 Structural Renderings
9.2 Stress Analysis
9.3 Crashworthiness Analysis
22 10 TESTS
10.1 Objectives
23 10.2 General
10.3 Proof Load Tests
25 10.4 Crash Energy Management Tests
10.5 Coupler Impact Tests
11 REFERENCES

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ASME RT 2 2021
$98.04