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ASTM C935-80(2002)

(Specification)

Standard Specification for General Requirements for Prestressed Concrete Poles Statically Cast (Withdrawn 2011)

Standard Specification for General Requirements for Prestressed Concrete Poles Statically Cast (Withdrawn 2011)

ABSTRACT
This specification covers the general requirements for statically cast prestressed concrete poles intended for use as structural supports for lights, distribution, transmission and dead end poles. The products made up of cements, aggregates, admixtures, and steels that meet the requirements. Products may be manufactured by accelerated curing, water curing, membrane curing or steam curing, then prestressed and reinforced. Water used for curing, washing aggregates, and mixing concrete should be free from substances in amounts that may be harmful to concrete or steel. Poles should be designed to carry all the forces associated with prestressing, handling, storage, installation, loading, and other service conditions.
SCOPE
1.1 This specification covers general requirements for prestressed concrete poles statically cast for use as structural supports for lights, distribution, transmission, and dead end poles.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
WITHDRAWN RATIONALE
This specification covers general requirements for prestressed concrete poles statically cast for use as structural supports for lights, distribution, transmission, and dead end poles.
Formerly under the jurisdiction of Committee C27 on Precast Concrete Products, this specification was withdrawn in January 2011 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

Status
Historical
Publication Date
05-Nov-1980
Withdrawal Date
31-Dec-2010
ICS
91.100.30 - Concrete and concrete products
Technical Committee
C27 - Precast Concrete Products
Drafting Committee
C27.20 - Architectural and Structural Products
Current Stage
Ref Project

Relations

Replaces
ASTM C935-80(1995) - Standard Specification for General Requirements for Prestressed Concrete Poles Statically Cast
Effective Date
06-Nov-1980
Replaced By
ASTM C935-13 - Standard Specification for General Requirements for Prestressed Concrete Poles Statically Cast
Effective Date
01-Apr-2013

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ASTM C935-80(2002) - Standard Specification for General Requirements for Prestressed Concrete Poles Statically Cast (Withdrawn 2011)ASTM C935-80(2002) - Standard Specification for General Requirements for Prestressed Concrete Poles Statically Cast (Withdrawn 2011)
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ASTM C935-80(2002) - Standard Specification for General Requirements for Prestressed Concrete Poles Statically Cast (Withdrawn 2011)
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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: C935 – 80 (Reapproved 2002)
Standard Specification for
General Requirements for Prestressed Concrete Poles
Statically Cast
This standard is issued under the fixed designation C935; 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 C39/C39M Test Method for Compressive Strength of Cy-
lindrical Concrete Specimens
1.1 This specification covers general requirements for pre-
C42/C42M Test Method for Obtaining and Testing Drilled
stressed concrete poles statically cast for use as structural
Cores and Sawed Beams of Concrete
supports for lights, distribution, transmission, and dead end
C94/C94M Specification for Ready-Mixed Concrete
poles.
C150 Specification for Portland Cement
1.2 The values stated in inch-pound units are to be regarded
C172 Practice for Sampling Freshly Mixed Concrete
as the standard. The values given in parentheses are for
C173/C173M Test Method for Air Content of Freshly
information only.
Mixed Concrete by the Volumetric Method
2. Referenced Documents C231 Test Method for Air Content of Freshly Mixed Con-
crete by the Pressure Method
2.1 ASTM Standards:
C260 Specification for Air-Entraining Admixtures for Con-
A36/A36M Specification for Carbon Structural Steel
crete
A82/A82M Specification for SteelWire, Plain, for Concrete
C309 Specification for Liquid Membrane-Forming Com-
Reinforcement
pounds for Curing Concrete
A370 Test Methods and Definitions for Mechanical Testing
C330 Specification for Lightweight Aggregates for Struc-
of Steel Products
tural Concrete
A416/A416M Specification for Steel Strand, Uncoated
C403/C403M Test Method for Time of Setting of Concrete
Seven-Wire for Prestressed Concrete
Mixtures by Penetration Resistance
A421/A421M Specification for Uncoated Stress-Relieved
C494/C494M Specification for Chemical Admixtures for
Steel Wire for Prestressed Concrete
Concrete
A586 Specification for Zinc-Coated Parallel and Helical
C595 Specification for Blended Hydraulic Cements
Steel Wire Structural Strand
C618 Specification for Coal Fly Ash and Raw or Calcined
A615/A615M Specification for Deformed and Plain
Natural Pozzolan for Use in Concrete
Carbon-Steel Bars for Concrete Reinforcement
A722/A722M Specification for Uncoated High-Strength
3. Basis of Acceptance
Steel Bars for Prestressing Concrete
3.1 Acceptability of prestressed concrete poles produced in
C31/C31M Practice for Making and Curing Concrete Test
accordance with this specification shall be determined by the
Specimens in the Field
results of compressive strength tests of concrete cylinders and
C33 Specification for Concrete Aggregates
mill certificates for the reinforcing steel. A written statement,
signed by the manufacturer, shall verify that the cement,
aggregates, admixtures, and steel conform to the applicable
This specification is under the jurisdiction ofASTM Committee C27 on Precast
specifications for the material and that the preparation of
Concrete Products and is the direct responsibility of Subcommittee C27.20 on
equipment, mixing, conveying, placing, consolidation, and
Architectural and Structural Products.
curing conforms to the requirements of the applicable standard
Current edition approved Nov. 6, 1980. Published January 1981. DOI: 10.1520/
C0935-80R02.
specifications. Concrete strength shall be determined by the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
compressive strength tests of cylinders. The manufacturer’s
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
statement shall also certify adherence to tolerance on dimen-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. sions. Acceptability of the concrete strength of completed
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C935 – 80 (2002)
prestressed concrete poles may also be determined by com- match the finish.All repair work involved with the loops shall
pression tests of concrete cores in accordance with Test be completed before delivery.
Method C42/C42M. 5.6 Grounding—In order to provide good electrical conti-
nuity, the spiral steel shall be securely tied to each reinforcing
4. Materials
steel member it contacts within 1 ft (0.3 m) of the top and the
4.1 Cement—Portland cement shall conform to the require-
butt of the pole. An embedded ground wire or provisions to
ments of Specification C150 or shall be blended hydraulic
attach a ground wire to the surface of the pole may be
cement conforming to the requirements of Types IS or IP
specified. The embedded ground wire shall be copper and not
Specification C595.
smaller than No. 6 AWG (4 mm). It shall be bonded with a
4.2 Aggregate—The concrete shall be made with fine and
suitable electrical connector to the reinforcing steel within 2 ft
coarse aggregates that conform to Specification C33 or C330.
(0.6 m) of both the top and butt of the pole. Grounding pigtail
The nominal maximum size of the coarse aggregate shall not
wire of soft-drawn stranded copper, not smaller than No. 6
1 3
exceed ⁄5 the minimum dimension of the member or ⁄4 of
AWG (4 mm), shall be bonded with a suitable compression or
either the clear spacing between the reinforcing steel or the
mechanical connector to the embedded ground wire, and shall
clear cover.
extend from the pole surface 4 6 1 in. (100 6 30 mm). Unless
4.3 Water—Water used for curing, for washing aggregates, otherwisespecified,groundingpigtailsshallbelocated3ft(0.9
and for mixing concrete shall be free of oils, organic materials,
m) from the top and 4 ft (1.2 m) from the butt. Provisions to
and other substances in amounts that may be deleterious to attachagroundwiretothesurfaceofthepolemustbespecified
concrete or steel, and it shall not contain concentrations of
by the purchaser. The type of fastener or provisions for
chloride ions in excess of 500 parts per million or sulfate ions fastening to be supplied by the pole manufacturer, the location,
in excess of 1000 parts per million.
the spacing, and any electrical connection to the reinforcing
4.4 Admixtures—Air-entraining admixtures shall conform steel must be covered in the purchaser’s specifications.
to Specification C260. Chemical admixtures shall conform to
6. Manufacture
Specification C494/C494M. Fly ash or other pozzolanic ad-
6.1 Mixture—The aggregates shall be sized, graded, propor-
mixtures shall conform to the requirements of Specification
C618. Admixtures shall not contain chloride ions in quantities tioned, and thoroughly mixed with proportions of cement and
water that will produce a concrete mixture of quality such that
that will cause the total chloride content of the concrete to
the poles will conform to the test and design requirements of
exceed 0.06 %.
this specification. Concrete conforming to Specification C94/
4.5 Steel—Prestressing steel shall conform to Specifications
C94M may be used.
A416/A416M, A421/A421M, A586,or A722/A722M. Auxil-
6.2 Placing—Concrete should be placed in the forms as
iary nontensioned reinforcement shall conform to Specification
nearly as possible in its final position. Special care should be
A82/A82MorA615/A615M.Baseplates,anchorbolts,andtop
taken to fill all parts of the forms, and to place concrete under
mount couplings shall conform to ASTM specifications desig-
and around all reinforcing steel. Reinforcement shall be ad-
nated on contract drawings.
equately secured so as to remain in the proper position during
5. Requirements Requirements
the placing of the concrete. Tie wires, if used to fasten the
5.1 Poles shall be designed to carry all forces associated reinforcing steel, shall be bent down to provide the maximum
with prestressing, handling, storage, installation, loading, and protective cover of concrete over the wires.
other service conditions. Consideration shall be given to the 6.3 Curing—Poles shall be cured by one of the following
level of prestress forces both before and after losses. methodsorcombinationthereof.Theyshallbecuredsothatthe
5.2 Concrete—Concrete shall have a minimum design com- concrete will develop the required compressive strength. The
pressive strength of 5000 psi (37.5 MPa) at 28 days. temperature of the concrete shall not exceed 100°F (38°C) nor
5.3 ConcreteCover—Theminimumconcretecoveroverthe drop below 40°F (4°C) for a minimum of 1 h after placing
reinforcement shall be 1 in. (25 mm). Ends of prestressed steel regardless of the curing option selected.
shall be recessed ⁄4 in. (6 mm) and shall be covered with a 6.3.1 Accelerated Curing—Poles may be cured with either
suitable waterproofing product. steam or radiant heat in a moist environment.
5.4 Air Entrainment—Unless otherwise specified by the 6.3.2 WaterCuring—Poles may be water-cured by covering
purchaser, all concrete shall have an air content of 5 % plus or with water-saturated material or by a system of perforated
minus1 %asmeasuredbyTestMethodC173/C173MorC231. pipes.
5.5 LiftingDevices—Flush inserts may be cast into the pole 6.3.3 Membrane Curing—A curing compound conforming
atlocationsagreeabletothepurchaser.Removableattachments to the requirements of Specification C309 may be applied and
may utilize the flush inserts to provide for lifting of the pole. should be left intact until strength requirements are met.
...

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