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ASTM C1776/C1776M-17(2022)

(Specification)

Standard Specification for Wet-Cast Precast Modular Retaining Wall Units

Standard Specification for Wet-Cast Precast Modular Retaining Wall Units

ABSTRACT
This specification covers the materials, manufacturing practice, and corresponding test methods for wet-cast precast modular retaining wall units cast from first-purpose concrete with or without the inclusion of steel reinforcement. The precast units covered by this specification are machine-placed units intended for use in the construction of dry stacked modular retaining wall systems. First-purpose concrete used for the production of precast modular retaining wall units under this specification shall be ready-mixed or central-mixed concrete. Other materials covered by this specification include cementitious materials, aggregates, admixtures, steel reinforcement, and lifting devices.
This specification also covers ordering information that the purchaser shall specify, physical properties (compressive strength, air content), sampling, frequency of tests, specimen preparation, inspection, certification, product marking, and workmanship, finish, and appearance.
SCOPE
1.1 This specification covers wet-cast precast modular retaining wall units cast from first-purpose concrete with or without the inclusion of steel reinforcement. The precast units covered by this specification are machine-placed units intended for use in the construction of dry stacked modular retaining wall systems.  
1.2 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.3 Units—The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text of the specification, the SI units are shown in brackets. The values stated in each system are not exact equivalents. Therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
30-Apr-2022
ICS
91.060.10 - Walls. Partitions. Facades
Technical Committee
C27 - Precast Concrete Products
Drafting Committee
C27.20 - Architectural and Structural Products
Current Stage
Ref Project

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ASTM C1776/C1776M-17(2022) - Standard Specification for Wet-Cast Precast Modular Retaining Wall UnitsASTM C1776/C1776M-17(2022) - Standard Specification for Wet-Cast Precast Modular Retaining Wall Units
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ASTM C1776/C1776M-17(2022) - Standard Specification for Wet-Cast Precast Modular Retaining Wall Units
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Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C1776/C1776M −17 (Reapproved 2022)
Standard Specification for
1
Wet-Cast Precast Modular Retaining Wall Units
This standard is issued under the fixed designation C1776/C1776M; 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 Steel Bars for Concrete Reinforcement
A706/A706M Specification for Deformed and Plain Low-
1.1 This specification covers wet-cast precast modular re-
Alloy Steel Bars for Concrete Reinforcement
taining wall units cast from first-purpose concrete with or
A767/A767M Specification for Zinc-Coated (Galvanized)
without the inclusion of steel reinforcement. The precast units
Steel Bars for Concrete Reinforcement
coveredbythisspecificationaremachine-placedunitsintended
A775/A775M Specification for Epoxy-Coated Steel Rein-
for use in the construction of dry stacked modular retaining
forcing Bars
wall systems.
A884/A884M Specification for Epoxy-Coated Steel Wire
1.2 The text of this standard references notes and footnotes
and Welded Wire Reinforcement
that provide explanatory material. These notes and footnotes
A934/A934M Specification for Epoxy-Coated Prefabricated
(excluding those in tables and figures) shall not be considered
Steel Reinforcing Bars
as requirements of the standard.
A1055/A1055M Specification for Zinc and Epoxy Dual-
1.3 Units—The values stated in either inch-pound units or
Coated Steel Reinforcing Bars
SI units are to be regarded separately as standard. Within the
A1060/A1060M Specification for Zinc-Coated (Galvanized)
textofthespecification,theSIunitsareshowninbrackets.The
Steel Welded Wire Reinforcement, Plain and Deformed,
values stated in each system are not exact equivalents.
for Concrete
Therefore, each system shall be used independently of the
A1064/A1064M Specification for Carbon-Steel Wire and
other. Combining values from the two systems may result in
Welded Wire Reinforcement, Plain and Deformed, for
non-conformance with the standard.
Concrete
1.4 This standard does not purport to address all of the
C31/C31M Practice for Making and Curing Concrete Test
safety concerns, if any, associated with its use. It is the
Specimens in the Field
responsibility of the user of this standard to establish appro-
C33/C33M Specification for Concrete Aggregates
priate safety, health, and environmental practices and deter-
C39/C39M Test Method for Compressive Strength of Cylin-
mine the applicability of regulatory limitations prior to use.
drical Concrete Specimens
1.5 This international standard was developed in accor-
C94/C94M Specification for Ready-Mixed Concrete
dance with internationally recognized principles on standard-
C125 Terminology Relating to Concrete and Concrete Ag-
ization established in the Decision on Principles for the
gregates
Development of International Standards, Guides and Recom-
C138/C138M Test Method for Density (Unit Weight),Yield,
mendations issued by the World Trade Organization Technical
and Air Content (Gravimetric) of Concrete
Barriers to Trade (TBT) Committee.
C143/C143M Test Method for Slump of Hydraulic-Cement
Concrete
2. Referenced Documents
C150/C150M Specification for Portland Cement
2
2.1 ASTM Standards:
C173/C173M Test Method forAir Content of Freshly Mixed
A615/A615M SpecificationforDeformedandPlainCarbon-
Concrete by the Volumetric Method
C192/C192M Practice for Making and Curing Concrete Test
1
Specimens in the Laboratory
This test method is under the jurisdiction ofASTM Committee C27 on Precast
Concrete Products and is the direct responsibility of Subcommittee C27.20 on
C231/C231M Test Method forAir Content of Freshly Mixed
Architectural and Structural Products.
Concrete by the Pressure Method
Current edition approved May 1, 2022. Published May 2022. Originally
C260/C260M Specification for Air-Entraining Admixtures
approved in 2017. Last previous edition approved in 2017 as C1776/C1776M - 17.
DOI: 10.1520/C1776_C1776M-17R22.
for Concrete
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
C494/C494M Specification for Chemical Admixtures for
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Concrete
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. C595/C595M Specification for Blended Hydraulic Cements
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1776/C1776M
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Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference

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5.1 This test method is a standard procedure for determining the resistance to water penetration under uniform static air pressure differences. The air-pressure differences acting across a building envelope vary greatly. These factors should be fully considered prior to specifying the test pressure difference to be used.
Note 1: In applying the results of tests by this test method, note that the performance of a wall or its components, or both, may be a function of proper installation and adjustment. In service, the performance will also depend on the rigidity of supporting construction and on the resistance of components to deterioration by various causes, vibration, thermal expansion and contraction, etc. It is difficult to simulate the identical complex wetting conditions that can be encountered in service, with large wind-blown water drops, increasing water drop impact pressures with increasing wind velocity, and lateral or upward moving air and water. Some designs are more sensitive than others to this upward moving water.
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1.2 This test method is applicable to any curtain-wall area or to windows, skylights, or doors alone.  
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1.4 The proper use of this test method requires a knowledge of the principles of pressure measurement.  
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4.1 These test methods are intended to provide simplified and economical means for gathering comparative research data on the flexural bond strength developed with different types of masonry units and mortar or for the purpose of checking job quality control (materials and workmanship).
Note 2: These test methods are not intended for use in establishing design stresses. For this purpose, Test Methods C1717 should be used.
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Note 1: Third-point loading (Test Method A) produces a moment distribution that is significantly different from uniformly distributed loading (Test Method B).Third-point loading (Test Method A) subjects more mortar joints to the maximum moment and thus, is likely to produce more conservative capacities than uniform loading (Test Method B).  
1.2 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.3 These test methods cover the application of the tests using either inch-pound or SI units. The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
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  • Standard
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    English language
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