ASTM D5977-03

Standard Specification for High Load Rotational Spherical Bearings for Bridges and Structures

SCOPE
1.1 This specification covers bridge bearings that consist of a spherical rotational element, where a stainless steel convex surface slides against a concave carbon steel plate covered with woven or sheet polytetrafluoroethylene (PTFE). The function of the bearing is to transfer loads and to accommodate any relative movement, including rotation between a bridge superstructure and its supporting structure, or both.
1.2 This specification covers the requirements of spherical bearings with a standard horizontal load (a maximum of 10 % of vertical).
1.3 The requirements stated in this specification are the minima necessary for the manufacture of quality bearing devices. It may be necessary to increase these minimum values due to other design conditions.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 The following safety hazards caveat pertains only to the test method portion, Section 7, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Feb-2003
• ICS: 93.040 - Bridge construction
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.32 - Bridges and Structures

Relations

• Replaces: ASTM D5977-96 - Standard Specification for High Load Rotational Spherical Bearings for Bridges and Structures
• Effective Date: 10-Feb-2003
• Replaced By: ASTM D5977-03(2007) - Standard Specification for High Load Rotational Spherical Bearings for Bridges and Structures
• Effective Date: 01-Dec-2007

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 5977 – 03
Standard Specification for
High Load Rotational Spherical Bearings for Bridges and
1
Structures
This standard is issued under the fixed designation D5977; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope A588/A588M Specification for High-Strength Low-Alloy
Structural Steel with 50 ksi [345 MPa] Minimum Yield
1.1 This specification covers bridge bearings that consist of
2
Point to 4 in. [100 mm] Thick
a spherical rotational element, where a stainless steel convex
A709/A709M Specification for Carbon and High-Strength
surfaceslidesagainstaconcavecarbonsteelplatecoveredwith
Low-Alloy Structural Steel Shapes, Plates, and Bars and
woven or sheet polytetrafluoroethylene (PTFE). The function
Quenched-and-Tempered Alloy Structural Steel Plates for
of the bearing is to transfer loads and to accommodate any
2
Bridges
relative movement, including rotation between a bridge super-
4
D638 Test Method for Tensile Properties of Plastics
structure and its supporting structure, or both.
D792 TestMethodsforDensityandSpecificGravity(Rela-
1.2 This specification covers the requirements of spherical
4
tive Density) of Plastics by Displacement
bearings with a standard horizontal load (a maximum of 10%
D1457 Specification for Polytetrafluoroethylene (PTFE)
of vertical).
4
Molding and Extrusion Materials
1.3 The requirements stated in this specification are the
D1777 Method for Measuring Thickness of Textile Mate-
minima necessary for the manufacture of quality bearing
5
rials
devices.Itmaybenecessarytoincreasetheseminimumvalues
D2256 Test Method for Tensile Properties of Yarns by the
due to other design conditions.
5
Single-Strand Method
1.4 The values stated in inch-pound units are to be regarded
2.2 AASHTO Standard:
as the standard. The values given in parentheses are for
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AASHTO Standard Specifications for Highway Bridges
information only.
7
2.3 AWS Standards:
1.5 The following safety hazards caveat pertains only to the
C.2.2-67 Metalizing with Aluminum and Zinc for Protec-
test method portion, Section 7, of this specification: This
tion of Iron and Steel
standard does not purport to address all of the safety concerns,
D.1.5 ANSI/AASHTO/AWS Bridge Welding Code
if any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health
3. Classification
practices and determine the applicability of regulatory limita-
3.1 The bearings are furnished in three types, as follows:
tions prior to use.
3.1.1 Fixed Spherical Bearing—Rotation only.
2. Referenced Documents 3.1.2 Uni-Directional Sliding Spherical Bearing—Rotation
plus movement in one direction.
2.1 ASTM Standards:
2
3.1.3 Multi-Directional Sliding Spherical Bearing—
A36/A36M Specification for Carbon Structural Steel
Rotation plus movement in all directions.
A 167 Specification for Stainless and Heat-Resisting
3
Chromium-Nickel Steel Plate, Sheet, and Strip
4. Material Specifications
A 240/A 240M Specification for Chromium and
4.1 Steel—The steel used for all major plates shall be
Chromium-Nickel Stainless Steel Plate, Sheet, and Strip
3
structural steel conforming to Specifications A36/A36M, A
for Pressure Vessels and General Applications
588/A588M, A 572/A572M, or A 709/A709M, as required.
A572/A572M Specification for High-Strength Low-Alloy
2
AllexposedsurfacesshallbezincmetalizedaccordingtoAWS
Columbium-Vanadium Structural Steel
C.2.2-67 (with no chipping), having a minimum thickness of 6
1
This specification is under the jurisdiction ofASTM Committee D04 on Road
4
and Paving Materials and is the direct responsibility of Subcommittee D04.32 on Annual Book of ASTM Standards, Vol 08.01.
5
Bridges and Structures. Annual Book of ASTM Standards, Vol 07.01.
6
Current edition approved Feb. 10, 2003. Published May 2003. Originally Available from American Association of State Highway and Transportation
approved in 1996. Last previous edition approved in 1996 as D5977-96. Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001.
2 7
Annual Book of ASTM Standards, Vol 01.04. Available fromAmerican Welding Society, 550 N.W. Lejeune Rd., Miami, FL
3
Annual Book of ASTM Standards, Vol 01.03. 33135.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5977–03
mil (0.152 mm) or treated with other project-approved coating 4.4.2 ThePTFEfortheprincipalslidesurfaceandforguide
systems such as coal tar or inorganic zinc paint. The dry film bars shall conform to the physical require
...