Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO M 199M:1999
• Năm ban hành / Publication date: 1999
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Specification for Precast Reinforced Concrete Manhole Sections (Metric)
• Thay thế cho / Replace: AASHTO M199M:1999
• Số trang / Page: 17

Phạm vi áp dụng / Scope of standard

This specification covers the manufacture and purchase
requirements of products used for the assembly and construction of
precast reinforced concrete manholes used in sewer and water
works.

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

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

The values stated in SI units are to be regarded as the
standard. A complete companion specification to M 199M, M 199, is
available for use with inch-pound units.

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.