AWWA Articles

AWWA Comment Period on ANSI/AWWA D103-19 Standard for Factory- Coated Bolted Carbon Steel Tanks for Water Storage

April 19, 2019

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 the 45-day public comment period for AWWA and ANSI. 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 June 3, 2019. 

Send comments to: 

Frank Kurtz 
303.347.6221 phone
303.795.7603 fax 

The review copy will be edited for publication and may also be revised as appropriate based on any comments received during the public comment period. Therefore, this copy is not suitable for continued utilization and is intended only for comment purposes.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. 

The purpose of this standard is to provide minimum requirements for the design, construction, inspection, and testing of new cylindrical, factory-coated, bolted carbon steel tanks for the storage of water. This standard is only applicable to tanks with a base elevation substantially at ground level. 

Major revisions made to the standard in this edition include the following: 

  1. Section 5 was revised to include risk category definitions from ASCE 7-10. Snow loads were revised to comply with ASCE 7-10. 
  2. Section 14 was revised so that seismic loading complies with ASCE 7-10. The site classification procedure was deleted and a reference to the procedure in ASCE 7-10 was added. Spectral response acceleration maps and the long-period transition period map were deleted and references to the maps in ASCE 7-10 were added. Revised the vertical design acceleration to include values for responses limited by buckling and responses not limited by buckling. Requirements were added for situations when the required freeboard is not provided. The slosh height equation was revised to match ASCE 7-10. The equation for allowable lateral shear for flat-bottom tanks was revised to show a service-level shear resistance similar to API 650 and ASCE 7-10. 
  3. Section 15 was revised so that wind loads complies with ASCE 7-10. The basic wind speed map was deleted and a reference to the basic wind speed map in ASCE 7-10 was added.