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 Status: Withdrawn · Replaced by: ASTM C Buy this standard.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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Proceed to Checkout Continue Shopping. The owner of the project for which these products are specified herein is cautioned to require inspection at the construction site.

Link to Active This link will always route to the current Active version of the standard. Test methods such as compression and absorption testing shall be performed. Note 1—Future products will to be included in Part II in a future revision of this specification. Future products will to be included in Part II in a future revision of this specification.

Beyond the critical importance of protecting human health and preventing contagious disease, properly designed and produced manholes ast, 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 awtm. 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.

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ASTM C – National Precast Concrete Association

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 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.

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Compliance with ASTM standards protects the integrity of precast concrete pipe systems and the consumer. 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.

Experience has shown, however, that the x478 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. 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.

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.

Standard Specification for Precast Reinforced Concrete Manhole Sections

Concrete products shall be subjected to either steam or water curing. If the document asfm revised or amended, you will be notified by email. Subscription pricing is determined by: 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.

Under the jurisdiction of Subcommittee C ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Active view current version of standard. Add to Alert PDF. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

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Minimum compressive strength of c487 manhole products covered must meet the requirement. Please first log in with a verified email before subscribing to alerts. Overdesigning reinforcement translates into an unnecessary increase in manhole manufacturing costs, which in x478 results in increased costs d478 consumers. Aggregates shall conform to the specificationexcept that the requirements for gradation shall not apply. Ensuring the separation of human waste from clean drinking water relies on the durability and reliability of underground piping systems.

Need more than one copy? Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. ASTM C and joint materials C opened up new manufacturing standards for joint materials as gasket material technology evolved.

Future products will to be included in Part II in a future revision of this specification. Committee C13 has been around a long time. You may delete a document from your Alert Profile at any c78. Development and review of practices and guides cover design, installation, testing, economic evaluation and performance of concrete pipe systems. C opened up new manufacturing standards for joint materials as gasket material technology evolved.

Byeight technical committees had been organized, and in six more were formed.

ASTM Manhole Specifications – National Precast Concrete Association

The owner of the project for which these products are specified herein is cautioned to require inspection at the construction site. The aztm made to hoop steel specifications means less steel.

Concrete products shall be subjected to either steam or water curing. This standard is also available to be included in Standards Subscriptions. ASTM C standards for negative pressure tests for manholes. As a specific example, consider the skyrocketing cost of steel as it relates to precast concrete reinforcement.