ASTM C478 PDF

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ASTM Manhole Specifications technical questions received here at the National Precast Concrete Association, C, “Standard [ ]. Of all the ASTM-related technical questions received here at the National Precast Concrete Association, C, “Standard Specification for. Standard Specification for Precast Reinforced Concrete Manhole Sections. Status: Withdrawn · Replaced by: ASTM C Buy this standard. Price: SEK.

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Minimum compressive strength of concrete manhole products covered must meet the requirement.

Note 2—This specification is asfm manufacturing and purchase specification only and does not include requirements for backfill, or the relationship between field load conditions and the strength requirements of the manhole products and appurtenances.

Subscription pricing is determined by: Risers and Conical Tops. Historical Version s – view previous versions of standard. The scope of C includes structures used in precast sewer, drainage and water works.

Future products will to be included in Part II in a future revision of this specification. The following specifications apply to manhole connectors and joints:.

ASTM Manhole Specifications

Concrete products shall be subjected to either steam or water curing. You may delete a document from your Alert Profile at any time. 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 steel reinforcement and concrete act together.

The owner of the project for which these products are specified herein is cautioned to require inspection at the construction site. Byeight technical committees had been organized, and in six more were formed. Standards Subsctiption may be the perfect solution. It is the responsibility of the user of this standard c4788 establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

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ASTM C – National Precast Concrete Association

Active view current version of standard. Beyond the critical importance of protecting human health and preventing contagious disease, properly designed and produced manholes ensure the safety of workers who handle precast products, and in the long run guarantee quality precast products that comply with accepted industry practices and prevent unnecessary increases in cost to the consumer. The ASTM C cc478 contains the requirements for the manufacture and purchase requirements of products used for the assembly and construction of circular, vertical precast concrete manholes and structures.

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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. Test methods such as compression and absorption testing shall be performed. This standard is also available to be included in Standards Subscriptions. The owner of the project for which these products are specified herein is cautioned to require inspection at the construction site.

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.

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. While the precast manhole is usually able to withstand additional pressure than that prescribed by ASTMthe gaskets are manufactured to withstand a minimum of only 13 psi according to ASTM C Leave a Reply Cancel reply Your email address will not be published.

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ASTM C – Standard Specification for Precast Reinforced Concrete Manhole Sections

C opened up new manufacturing standards for joint materials c78 gasket material technology evolved. Concrete products shall be subjected to either steam or water curing. 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.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Work Item s – proposed revisions of this standard. Committee C13 has been around a long time. The changes made to hoop steel specifications means less steel. Many NPCA members produce precast concrete manholes, as these products are used for so many underground applications such as storm and sanitary sewer access, lift stations and utilities.

Note 1—Future products will to be included in Part Aastm in a future revision of this specification.