ASTM C1786-16

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it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C1786 − 14 C1786 − 16
Standard Specification for
Segmental Precast Reinforced Concrete Box Sections for
Culverts, Storm Drains, and Sewers Designed According to
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AASHTO LRFD
This standard is issued under the fixed designation C1786; 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
1.1 This specification covers precast reinforced concrete box sections comprised of separate segments that once properly field
assembled make the final structure. These structures are intended to be used for the construction of culverts and for the conveyance
of storm water, industrial wastes and sewage.
NOTE 1—This specification is primarily a manufacturing and purchasing specification. However, box culverts manufactured to this standard are
intended to meet the design requirements of the AASHTO LRFD Bridge Design Specifications, and as such, design guidance is included in Appendix
X1.
NOTE 2—The successful performance of this product depends upon the proper selection of the box section, bedding, backfill, and care that the
installation conforms to the construction specifications. The purchaser of the precast reinforced concrete box sections specified herein is cautioned that
proper correlation of the loading conditions and the field requirements with the box section specified, and provision for inspection at the construction site,
are required.
1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this
standard.
2. Referenced Documents
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2.1 ASTM Standards:
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
C150 Specification for Portland Cement
C260 Specification for Air-Entraining Admixtures for Concrete
C309 Specification for Liquid Membrane-Forming Compounds 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
C1116 Specification for Fiber-Reinforced Concrete and Shotcrete
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2.2 AASHTO Standards:
AASHTO LRFD Bridge Design Specifications
AASHTO LRFD Bridge Construction Specifications
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This test method is under the jurisdiction of ASTM Committee C13 on Concrete Pipe and is the direct responsibility of Subcommittee C13.07 on Acceptance
Specifications and Precast Concrete Box Sections.
Current edition approved Nov. 1, 2014Feb. 1, 2016. Published December 2014February 2016. Originally approved in 2014. Las previous edition approved in 2014 as
C1786 – 14. DOI: 10.1520/C1786–14.10.1520/C1786–16.
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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.
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Available from American Association of State Highway and Transportation Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,
http://www.transportation.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C1786 − 16
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2.3 ACI Standards:
ACI 318 Building Code Requirements for Structural Concrete
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 box section—the completed box culvert unit with all segments adjoined (see Fig. 1 for configuration options).
3.1.2 box segment—the individual piece (top slab, bottom slab, or three-sided structure) that gets adjoined to other pieces to
complete the final box section
3.2 Definitions—For definitions of terms relating to concrete box culvert sections not found above, see Terminology C822.
4. Basis of Acceptance
4.1 Acceptability of the box sections produced in accordance with this standard shall be determin
...