ASTM C478 PDF

ASTM C478 PDF

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 Status: Withdrawn · Replaced by: ASTM C Buy this standard.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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ASTM Manhole Specifications

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. Leave a Reply Cancel reply Your email address will not be published. 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.

Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Proceed to Checkout Continue Shopping. This specification covers the manufacture and purchase requirements of products used for the assembly and construction of circular vertical 4c78 reinforced concrete manholes and structures used in sewer and water works.

This specification is a manufacturing and purchase specification only and does not include ast, for backfill, or the relationship between field load conditions and the strength requirements of aetm manhole products and appurtenances.

The owner of the project for which these products are specified herein is cautioned to require inspection at the construction site. ASTM C specifications are minimum requirements for manholes, and engineers can specify additional reinforcement to resist point loading.

While the precast manhole is usually able to withstand additional pressure than that prescribed by ASTMthe gaskets are manufactured qstm withstand a minimum of only 13 psi according to ASTM C Future products will to be included in Part II in a future revision of this specification.

Historical Version s – view previous versions of standard. 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. It is more forgiving than other gaskets and is becoming more the norm. Note 2—This specification is a atm 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.

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This standard is also available to be included in Standards Subscriptions. Note 1—Future products will to be included in Part II astj a future revision of this specification.

In addition to the O-ring gasket cross section, the profile-wall gasket cross section was developed see ASTM C listed below. Experience has shown, however, that the successful performance of this product depends upon the satm selection of the product strength, type of foundation and backfill, and care in the field installation of the manhole products and connecting pipes. Minimum compressive strength of concrete manhole products covered must meet the requirement.

ASTM C – Standard Specification for Precast Reinforced Concrete Manhole Sections

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.

Risers and Conical Tops. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. A bit of history Committee C13 has been around a long time. You may delete a document from your Alert Profile at any time.

Standard Specification for Precast Reinforced Concrete Manhole Sections

Please first verify your email before subscribing to alerts. Ensuring the separation of human waste from clean drinking water relies on the durability and reliability of underground piping c48. Concrete products shall be subjected to either steam or water curing.

Active view current version of standard. 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. aastm

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.

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The changes made to hoop steel specifications means less steel. 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. Test methods such as compression and absorption testing shall be performed.

ASTM C – 08 Standard Specification for Precast Reinforced Concrete Manhole Sections

asfm Please first log in with a verified email before subscribing to alerts. Subscription pricing is determined by: The ASTM C standard 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. Under the jurisdiction of Subcommittee C Compliance with ASTM standards protects the integrity of precast concrete pipe systems and the consumer.

The aggregates shall be sized, graded, proportioned, and mixed with such proportions of cementitious materials and water as will produce as homogeneous concrete mixture of such quality that the products will conform to the test and design requirements.

ASTM C standards for negative pressure tests for manholes. Aggregates shall conform to the specificationexcept that awtm requirements for c4478 shall not apply.

The committee meets once a year, with approximately members attending over three days of technical meetings. We have no amendments or corrections for this standard. 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.

This abstract is a brief summary of the referenced standard. This specification covers the manufacture and purchase zstm of products used for the assembly and construction of circular vertical precast reinforced concrete manholes and structures used in sewer and water works.