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ASTM C1824-16

(Test Method)

Standard Test Method for Full Scale Bending Test of Spun Prestressed Concrete Bases for Tapered Steel Lighting Poles

Standard Test Method for Full Scale Bending Test of Spun Prestressed Concrete Bases for Tapered Steel Lighting Poles

SIGNIFICANCE AND USE
5.1 This test method is intended to provide the user with acceptable apparatus requirements and a prescribed procedure to determine the bending moment capacity of spun pre-stressed concrete bases for use with tapered steel poles.  
5.2 The results of this test method are used as a basis for verification of calculated bending moment capacity, quality control tool for manufacturing process and as a basis for determining statistical bending moment capacity.  
5.3 This test method shall not be used for full length prestressed concrete, steel, or composite poles.
SCOPE
1.1 This test method covers determination of ultimate bending moment capacity and cracking moment capacity of concrete bases used as foundations for tapered steel lighting poles in accordance to Specification C1804.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 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
31-Dec-2015
Technical Committee
C27 - Precast Concrete Products
Drafting Committee
C27.20 - Architectural and Structural Products
Current Stage
Ref Project

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ASTM C1824-16 - Standard Test Method for Full Scale Bending Test of Spun Prestressed Concrete Bases for Tapered Steel Lighting PolesASTM C1824-16 - Standard Test Method for Full Scale Bending Test of Spun Prestressed Concrete Bases for Tapered Steel Lighting Poles
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ASTM C1824-16 - Standard Test Method for Full Scale Bending Test of Spun Prestressed Concrete Bases for Tapered Steel Lighting Poles
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C1824 − 16
StandardTest Method for
Full Scale Bending Test of Spun Prestressed Concrete
1
Bases for Tapered Steel Lighting Poles
This standard is issued under the fixed designation C1824; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.4 second crack (re-cracking) load—the load at which a
previously formed crack will reopen.
1.1 This test method covers determination of ultimate bend-
ing moment capacity and cracking moment capacity of con-
3.1.5 spun base—a base in which the concrete is distributed
crete bases used as foundations for tapered steel lighting poles
and compacted through centrifugal force.
in accordance to Specification C1804.
3.1.6 tapered section—upper portion of base, which has a
1.2 The values stated in inch-pound units are to be regarded
taper designed to match overlapping steel pole taper.
as standard. The values given in parentheses are mathematical
3.1.7 ultimate load—maximum test load the base will carry
conversions to SI units that are provided for information only
in the specified direction before the steel or concrete will reach
and are not considered standard.
its limiting state.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4.1 This test consists of applying transverse loads at a
bility of regulatory limitations prior to use.
predetermined distance to simulate bending moments induced
by wind forces exerted on the spun concrete base. The base is
2. Referenced Documents
tested in a horizontal orientation. The concrete base specimen
2.1 ASTM Standards:
is laterally supported at two locations: at the ground line and
C39 Test Method for Compressive Strength of Cylindrical
near the bottom end of the base. The bending load is applied
Concrete Specimens
through a steel test arm consisting of a matching taper steel
C192 Practice for Making and Curing Concrete Test Speci-
adaptor with appropriate extension, which is of sufficient
mens in the Laboratory
length to deem shear effects negligible. Bending loads are
C1804 Specification for Spun Cast Prestressed Concrete
applied gradually at a predetermined loading sequence. The
Bases for Tapered Steel Lighting Poles
test bending moment is determined by multiplying the moment
arm measured from the simulated ground line to the load
3. Terminology
application point multiplied by the applied load value. Due to
3.1 Definitions:
the relatively short height of these bases extending above
3.1.1 cracking load—a load which creates a bending mo-
ground line in comparison to the entire structure height,
ment of enough magnitude to produce a tensile stress greater
obtaining deflection data is not required.
than the sum of induced compression plus the tensile strength
of the concrete resulting in tensile cracks on the tension face of
5. Significance and Use
the base.
5.1 This test method is intended to provide the user with
3.1.2 cylindrical section—lower portion of base designed to
acceptable apparatus requirements and a prescribed procedure
be buried in concrete backfill below ground line.
to determine the bending moment capacity of spun pre-stressed
3.1.3 ground line—is the distance from the butt end of the
concrete bases for use with tapered steel poles.
base to the point where theoretical embedment in the founda-
5.2 The results of this test method are used as a basis for
tion is specified (theoretical buried depth).
verification of calculated bending moment capacity, quality
control tool for manufacturing process and as a basis for
1
This test method is under the jurisdiction ofASTM Committee C27 on Precast
determining statistical bending moment capacity.
Concrete Products and is the direct responsibility of Subcommittee C27.20 on
Architectural and Structural Products.
5.3 This test method shall not be used for full length
Current edition approved Jan. 1, 2016. Published January 2016. DOI: 10.1520/
C1824–16. prestressed concrete, steel, or composite poles.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1824 − 16
6. Apparatus cell controller shall have current calibration certificate. Cali-
bration shall be performed annually.
6.1 General Requirements—The test area, fixtures and adap-
tors shall be sized to accommodate the largest test specimens
6.5 Fixturing of Test Specimen—The test
...

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