ASTM C478 PDF

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.

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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. Beyond the critical importance of astm c478 human health and preventing contagious disease, properly designed and c748 manholes ensure the safety of workers who handle precast products, and in the long run astm c478 quality precast products that comply with accepted industry practices and prevent unnecessary increases in cost to the consumer.

The following specifications apply to manhole connectors and joints:. A bit of history Committee C13 has been around c4478 long time.

Note 2—This specification is a manufacturing and purchase specification only and does not include requirements for backfill, or the relationship astm c478 field load conditions and the strength requirements of the manhole products and appurtenances.

This specification is a manufacturing and purchase specification only and does not include requirements for backfill, astm c478 the relationship between field load conditions and the strength requirements of the manhole products c487 astm c478. It is more forgiving than other gaskets and is becoming more the norm.

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. Leave astm c478 Reply Cancel reply Astm c478 email address will not be published.

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Link to Active F478 link will always route to the current Active version of the standard.

astm c478 Overdesigning reinforcement translates into an unnecessary increase in manhole awtm costs, which in turn results in increased costs to consumers. Development and review of practices and guides cover design, installation, testing, economic evaluation and performance of concrete pipe systems.

Concrete products shall be subjected to either steam or astm c478 curing.

Future products will to be included in Part II in a future revision of this specification. The specific scope of C13 is the astm c478 and review of specifications, methods of astm c478 and definitions for concrete pipe, concrete box sections and concrete manhole sections used for constructing sewers, culverts, and for factory-made c4478 and self-energizing joints. The following specifications apply to manhole connectors and joints: Active view current version of standard.

ASTM Manhole Specifications

Your email address atsm not astm c478 published. Save my name, email, and website in this browser for the next time I comment. Compliance with ASTM standards protects the integrity astm c478 precast concrete pipe systems and the consumer.

Under the jurisdiction of Subcommittee C Work Item s – proposed revisions of this 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.

Ensuring the separation of human waste from clean drinking water relies on the durability and reliability of underground piping astm c478.

Committee C13 has been around a long time. Astm c478 the precast manhole is usually able to withstand additional pressure than that prescribed by ASTMthe gaskets are manufactured to withstand a minimum of astm c478 13 psi according astm c478 ASTM C The changes made to hoop steel specifications means less steel.

The scope of C includes structures used in precast sewer, drainage and water works. Astm c478 addition to the O-ring gasket cross section, the profile-wall gasket cross section was developed see ASTM C astm c478 below.

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ASTM C specifications are minimum requirements for manholes, and engineers can specify additional reinforcement to resist point loading.

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

Many NPCA members produce precast concrete manholes, as these products are used for so many underground applications such as storm and sanitary astm c478 access, lift stations and utilities. This abstract is a brief summary of the referenced 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.

Referenced Astm c478 purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the c78. This specification covers the manufacture and purchase requirements of products used for the assembly and construction of circular vertical astm c478 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, astm c478 asrm in the field installation of the manhole astm c478 and connecting pipes. Byeight technical committees had been organized, and in six more were formed.

ASTM Manhole Specifications – National Precast Concrete Association

C13 has nine technical subcommittees that maintain jurisdiction over these standards. The owner of the project for which these products are specified herein is cautioned astm c478 require inspection at the construction site. 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 astm c478.