American Water Works Association (AWWA)

AWWA comment period on the reaffirmation of ANSI/AWWA D110 - Wire- and strand-wound, circular prestressed concrete water tanks


AWWA solicits public comments on all proposed new AWWA Standards, and on all proposed revisions, reaffirmations, or withdrawals of existing AWWA Standards. The referenced standards project is being considered for approval and the publication of this notice begins AWWA's 30-day public comment period. An electronic public review copy of the proposed standard can be obtained for review during the comment period by emailing Comments must be submitted in writing to the AWWA contact listed below no later than the last day of the comment period specified herein. Such comments shall be specific to the section(s) of the standard under review and include sufficient detail so as to enable the reader to understand the commenter's position, concerns and suggested alternative language, if appropriate.

AWWA Comment Period closed on March 25, 2018.

Send comments to:
Frank Kurtz
303.347.6221 phone
303.795.7603 fax

This copy is not suitable for continued utilization and is intended only for comment purposes. Final publication of the standard may take several months. When it is available, a notice will be published in the official notice section of Journal – American Water Works Association. The standard becomes an effective AWWA standard on the first day of the month following such publication in Journal – American Water Works Association.


1.1.1 Intent of standard. The intent of this standard is to describe current recommended practice for the design, construction, inspection, and maintenance of wire- and strand-wound, circular, prestressed concrete water-containing structures with the following four types of core walls:
Type I—cast-in-place concrete with vertical prestressed reinforcement
Type II—shotcrete with a steel diaphragm
Type III—precast concrete with a steel diaphragm
Type IV—cast-in-place concrete with a steel diaphragm

1.1.2 Items not described in standard. This standard does not describe bonded or unbonded horizontal tendons for prestressed reinforcement of the tank wall, floor, or roof.

1.1.3 Tank contents. This standard applies to containment structures for use with potable water or raw water of normal temperature and pH commonly found in drinking water supplies. It is not intended for use in the design of containment structures for highly aggressive waters or high-temperature waters without special consideration being given to their effects on the structure; nor is it intended that the standard be used for the design of structures for wastewater, bulk dry storage, chemical storage, or storage of slurries.

This is a reaffirmation and no substantive changes have been made.

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