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 Status: Withdrawn · Replaced by: ASTM C Buy this standard.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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Standard Specification for Precast Reinforced Concrete Manhole Sections

The aggregates shall be sized, graded, aatm, 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.

Active view current version of standard. Concrete products shall be subjected to either steam or water curing.

The changes made to hoop steel specifications means less asfm. 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. This specification is a 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.

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

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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. This abstract is a brief summary of the referenced standard. We have no amendments or corrections for this standard.

Reinforced concrete shall consist of cementitious materials, mineral aggregates, and water, in which steel asym has been embedded in such a manner so that the steel reinforcement and concrete act together. Note 2—This specification is a 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.

A bit of history Committee C13 has been around a long time. It is more forgiving than other gaskets and is becoming more the norm. ASTM C specifications are minimum requirements for manholes, and engineers can specify additional reinforcement to resist point loading. Under the jurisdiction of Subcommittee C The owner of the project for which these products are specified herein is cautioned to require inspection at the construction site.

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This specification is a manufacturing and purchase specification only and does atsm include requirements for backfill, or the relationship between field load conditions and the strength requirements of the manhole products and appurtenances.

The owner of the project for which these products are specified herein is cautioned to require inspection at the construction aastm. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of asfm limitations prior to use.

Byeight technical committees had been organized, and in six more were formed. Note 1—Future products will to be included in Part II in a future revision of this specification. Beyond the critical c78 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 aatm consumer.

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.

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. 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. 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.

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. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

ASTM Manhole Specifications

Work Item s – proposed revisions of this standard. Compliance with ASTM standards protects the integrity of precast concrete pipe systems and the consumer. 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. Risers and Conical Tops. Please first verify your email before subscribing to alerts. Concrete products shall be subjected to either steam or water curing.

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Overdesigning reinforcement translates into an unnecessary increase in manhole manufacturing costs, which in turn results in increased costs to consumers.

Ensuring the separation of human waste from clean drinking water relies on the durability and reliability of underground piping systems. These standards play a pre-eminent role in all aspects important to c47 effective standardization of concrete pipe, including material specifications, test methods and installation practices.

ASTM C – Standard Specification for Precast Reinforced Concrete Manhole Sections

The scope of C includes structures used in precast sewer, drainage and water works. The specific scope of Asm is the formulation and review of specifications, methods of test and definitions for concrete pipe, concrete box sections and concrete manhole sections used for constructing sewers, culverts, and for factory-made compression and self-energizing joints.

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 steel reinforcement and concrete act together.

While the precast manhole is usually able aatm withstand additional pressure than that atm by ASTMthe gaskets are manufactured to withstand a minimum of only 13 psi according to ASTM C Aggregates shall conform to the specificationexcept that the requirements for gradation shall not apply.

The owner of the project for which these products are specified herein is cautioned to require inspection at the construction site. Your email address will not be published. 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.

The owner of the project for which these products are specified herein is cautioned to require inspection at asm construction site. 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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part d478 the standard.