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Designation: C478M
−
15
Standard Specification for
Circular Precast Reinforced Concrete Manhole Sections
(Metric)
1
This standard is issued under the fixed designation C478M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
PART I—GENERAL
1. Scope
1.1 This specification covers the manufacture and purchase
requirements of products used for the assembly and construc-
tion of circular vertical precast reinforced concrete manholes
and structures used in sewer, drainage, and water works.
1.2 Part I, Sections
1 – 11
, of this specification presents
general requirements and requirements which are common to
each precast concrete product covered by this specification.
1.3 Part II of this specification presents specific require-
ments for each manhole product in the following sections:
Product
Section
Grade Rings
12
Flat Slab Tops
13
Risers and Conical Tops
14
Base Sections
15
Steps and Ladders
16
N
OTE
1—Future products will be included in Part II in a future revision
of this specification.
1.4 This specification is the SI companion to C478.
N
OTE
2—This specification is a manufacturing and purchase specifica-
tion only, and does not include requirements for backfill, or the relation-
ship between field load conditions and the strength requirements of the
manhole products and appurtenances. Experience has shown, however,
that the successful performance of this product depends upon the proper
selection of the product strength, type of foundation and backfill, and care
in the field installation of the manhole products and connecting pipes. The
owner of the project for which these products are specified herein is
cautioned to require inspection at the construction site.
2. Referenced Documents
2.1
ASTM Standards:
2
A615/A615M
Specification for Deformed and Plain Carbon-
Steel Bars for Concrete Reinforcement
A706/A706M
Specification for Deformed and Plain Low-
Alloy Steel Bars for Concrete Reinforcement
A1064/A1064M
Specification for Carbon-Steel Wire and
Welded Wire Reinforcement, Plain and Deformed, for
Concrete
C33
Specification for Concrete Aggregates
C39/C39M
Test Method for Compressive Strength of Cylin-
drical Concrete Specimens
C150
Specification for Portland Cement
C260
Specification for Air-Entraining Admixtures for Con-
crete
C309
Specification for Liquid Membrane-Forming Com-
pounds for Curing Concrete
C494/C494M
Specification for Chemical Admixtures for
Concrete
C497
Test Methods for Concrete Pipe, Manhole Sections, or
Tile
C595
Specification for Blended Hydraulic Cements
C618
Specification for Coal Fly Ash and Raw or Calcined
Natural Pozzolan for Use in Concrete
C822
Terminology Relating to Concrete Pipe and Related
Products
C989
Specification for Slag Cement for Use in Concrete and
Mortars
C1017/C1017M
Specification for Chemical Admixtures for
Use in Producing Flowing Concrete
C1602/C1602M
Specification for Mixing Water Used in the
Production of Hydraulic Cement Concrete
2.2
ACI Standard:
ACI 318
Building Code, Requirements for Reinforced Con-
crete
3
3. Terminology
3.1
Definitions—
For definitions of terms relating to concrete
pipe, see Terminology
C822
.
1
This specification is under the jurisdiction of ASTM Committee
C13
on
Concrete Pipe and is the direct responsibility of Subcommittee
C13.06
on Manholes
and Specials.
Current edition approved Jan. 1, 2015. Published January 2015. Originally
approved in 1980. Last previous edition approved in 2014 as C478M – 14. DOI:
10.1520/C0478M-15.
2
For referenced ASTM standards, visit the ASTM website,
www.astm.org, or
contact ASTM Customer Service at
service@astm.org.For
Annual Book of ASTM
Standards
volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
Available from American Concrete Institute (ACI), P.O. Box 9094, Farmington
Hills, MI 48333-9094,
http://www.aci-int.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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