ASTM International - ASTM A911/A911M-21

Standard Specification for Low-Relaxation Steel Bars for Prestressed Concrete Railroad Ties

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Organization: ASTM International
Publication Date: 15 April 2021
Status: active
Page Count: 4
ICS Code (Steels for reinforcement of concrete): 77.140.15
scope:

1.1 This specification covers low-relaxation steel bars for use in prestressed concrete railroad ties.

1.2 This specification is applicable for orders in either inch-pounds units (as Specification A911) or in SI units (as Specification A911M).

1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the specification.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

abstract:

This specification covers uncoated, stress-relieved steel bars for prestressed concrete railroad ties. Analysis of the steel shall conform to the chemical requirements specified by the... View More

Document History

ASTM A911/A911M-21
April 15, 2021
Standard Specification for Low-Relaxation Steel Bars for Prestressed Concrete Railroad Ties
1.1 This specification covers low-relaxation steel bars for use in prestressed concrete railroad ties. 1.2 This specification is applicable for orders in either inch-pounds units (as Specification...
November 1, 2015
Standard Specification for Low-Relaxation Steel Bars for Prestressed Concrete Railroad Ties
1.1 This specification covers low-relaxation steel bars for use in prestressed concrete railroad ties. 1.2 This specification is applicable for orders in either inch-pounds units (as Specification...
January 15, 2011
Standard Specification for Uncoated, Stress-Relieved Steel Bars for Prestressed Concrete Ties
1.1 This specification covers uncoated stress-relieved steel bars for use in prestressed concrete railroad ties. 1.2 A supplementary requirement (S1) is provided for use where low-relaxation bars...
May 1, 2005
Standard Specification for Uncoated, Stress-Relieved Steel Bars for Prestressed Concrete Ties
1.1 This specification covers uncoated stress-relieved steel bars for use in prestressed concrete railroad ties. 1.2 Supplement I describes low-relaxation bars and relaxation testing for that...
September 10, 2002
Standard Specification for Uncoated, Stress-Relieved Steel Bars for Prestressed Concrete Ties
1.1 This specification covers uncoated stress-relieved steel bars for use in prestressed concrete railroad ties. 1.2 Supplement I describes low-relaxation bars and relaxation testing for that...
September 10, 1999
Standard Specification for Uncoated, Stress-Relieved Steel Bars for Prestressed Concrete Ties
1.1 This specification covers uncoated stress-relieved steel bars for use in prestressed concrete railroad ties. 1.2 Annex A1 describes low-relaxation bars and relaxation testing for that product....
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