ASTM C478M-12a

Standard Specification for Precast Reinforced Concrete Manhole Sections (Metric)

ASTM International, 10/01/2012

Publisher: ASTM

File Format: PDF

$30.00$60.00

Description

Published:01/10/2012

Pages:9

File Size:1 file , 120 KB

Note:This product is unavailable in Russia, Ukraine, Belarus

1.1 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, drainage, and water works.

1.2 Part I, Sections 1-11, of this specification presents general requirements and requirements which are common to each precast concrete product covered by this specification.

1.3 Part II of this specification presents specific requirements for each manhole product in the following sections:

	Product	Section
	Grade Rings	12
	Flat Slab Tops	13
	Risers and Conical Tops	14
	Base Sections	15
	Steps and Ladders	16

Note 1 - Future products will be included in Part II in a future revision of this specification.

1.4 This specification is the SI companion to C478.

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. 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.

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