26 Sep Of all the ASTM-related technical questions received here at the National Precast Concrete Association, C, “Standard Specification for. PRECAST CONCRETE MANHOLES. Round Structures. • ASTM C, “Standard . Specification for Precast. Reinforced Concrete. Manhole Sections”. This standard is issued under the fixed designation C ; the number immediately 1 This specification is under the jurisdiction of ASTM Committee C on.
|Published (Last):||20 December 2012|
|PDF File Size:||19.60 Mb|
|ePub File Size:||10.59 Mb|
|Price:||Free* [*Free Regsitration Required]|
ASTM C specifications are minimum requirements for manholes, and engineers can specify additional reinforcement to resist point loading. Committee C13 has been around a long time. Leave a Reply Cancel reply Your astm c478 address will not be published.
C13 has nine technical subcommittees that maintain jurisdiction over these standards. Reinforced concrete shall consist of cementitious materials, mineral aggregates, and water, in which steel reinforcement has been embedded in such a manner so that the astm c478 reinforcement and concrete act together.
Test methods such as compression and absorption testing shall be performed. C opened astm c478 new manufacturing standards for joint astm c478 as gasket material technology evolved. It is more forgiving than other gaskets and is becoming more the norm.
ASTM Manhole Specifications
The aggregates shall be sized, graded, proportioned, and mixed with such proportions x478 cementitious materials and water as adtm produce as homogeneous concrete mixture of such quality that the products will conform to the test and astm c478 requirements. 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.
The specific scope of C13 is astm c478 formulation and review of specifications, methods of test and definitions for concrete pipe, concrete astm c478 sections and concrete manhole sections used for constructing sewers, culverts, and astm c478 factory-made compression and self-energizing joints.
The owner of the project for which these astm c478 are specified herein is cautioned to require inspection at the construction site. This specification covers the manufacture and purchase requirements of products used for the assembly and construction of circular vertical precast reinforced concrete manholes and structures used in sewer and water works. The emergence of the Clean Water Act astm c478 the qstm structure c4478 regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface waters.
Overdesigning reinforcement translates into an unnecessary increase in manhole manufacturing costs, which in turn results in increased costs to consumers. ASTM C standards for negative pressure tests for manholes.
ASTM C – 08 Standard Specification for Precast Reinforced Concrete Manhole Sections
Referenced Documents purchase separately The documents ast, below are referenced within astm c478 subject standard but are not provided as part of the standard. The changes made to hoop steel specifications means less steel.
ASTM does not give any warranty express or implied or make any representation that the contents of this astm c478 are accurate, complete or up to date. Many NPCA members produce precast concrete manholes, as these products astm c478 used for so many underground applications astm c478 as storm and sanitary sewer access, lift stations and utilities.
Risers and Conical Tops. The committee meets once a year, with approximately members attending over three days of technical meetings. The owner of the project for which these products are specified herein is cautioned to require inspection at the construction site.
Active view current version of standard. In addition to the O-ring gasket cross section, the profile-wall gasket cross section was developed see ASTM C listed astm c478. Aggregates shall conform to the specificationexcept that the requirements for gradation shall not apply. Minimum compressive strength of concrete manhole products covered must meet the requirement.
Byeight technical committees had been organized, and in six more were formed.
Historical Version s – view previous versions of standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. This specification is a manufacturing and purchase specification only and astm c478 not include requirements for backfill, astm c478 the relationship between field load conditions and the strength requirements of the manhole products and appurtenances.
A bit of history Committee C13 has been around a long time.
The ASTM C standard contains the requirements for the manufacture and purchase requirements of products used for the assembly and construction astm c478 circular, vertical precast astm c478 manholes and structures.
Referenced Documents purchase astm c478 The documents listed below are referenced within the subject standard but are not provided as part of the standard. ASTM is at the cutting edge of all of these changes; the balance of the members of its technical committees represents the best practitioners in their respective fields.
Future products will to be included in Part Astm c478 in a future revision of this specification. To improve the testing of manhole section gaskets, the discussions in C led to the profile wall gasket, a connection with no notch that can be reset in the manhole.
Development and review of practices and guides cover design, installation, testing, economic evaluation and performance of concrete pipe systems.
ASTM C – 18 Standard Specification for Circular Precast Reinforced Concrete Manhole Sections
Under the jurisdiction of Astm c478 C Compliance with ASTM standards protects the integrity of precast concrete pipe systems and the consumer. Link to Active This link will always route to the current Active version of the standard. Note 1—Future products will to be included in Part II in a future revision of this specification. Understanding and supporting ASTM standards The emergence of the Clean Water Act established the basic structure for regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface waters.
Experience has shown, however, astm c478 the successful performance of this product depends upon the proper selection of the product strength, type astm c478 foundation and backfill, and care in the field installation of the manhole products and connecting pipes.
The following specifications apply to manhole connectors and joints:. The following specifications apply to manhole connectors and joints: Your email address will not be published. Experience has shown, however, that the successful performance of this product depends upon the proper selection of astm c478 product strength, type of astm c478 and astm c478, and care in the field installation of the manhole products and connecting pipes.
Concrete products shall be subjected to either steam or water curing.
The scope of C includes structures used in precast sewer, drainage and astm c478 works. Save my name, email, and website in this browser for the next time I comment. This abstract is a astm c478 summary of the referenced standard. Work Item s – proposed revisions of this standard.