ACI 350.3-06 requires the designer to choose a structural system similar to those used in buildings but adapted for tanks:
The code applies to rectangular and circular concrete tanks, reservoirs, and basins. It explicitly covers structures containing liquids with mass density up to 75 lb/ft³ (similar to water). Importantly, it excludes pressure vessels and buried tanks where soil provides restraint.
The American Concrete Institute (ACI) is a leading authority and resource on concrete and concrete-related subjects. ACI publishes various codes, specifications, and guides for the design, construction, and testing of concrete structures. These documents are widely adopted by engineers, architects, contractors, and building officials in the construction industry.
Seismic Analysis of a Rectangular Liquid-Containing Tank Using ACI 350.3-06: A Case Study ACI-350.3-06.pdf
If you need a summary, critique, or comparison of ACI 350.3-06 with ACI 350.3-20 (the latest 2020 version), I can write that as a separate original document. Just let me know.
The ACI 350.3-06 standard, "Seismic Design of Liquid-Containing Concrete Structures and Commentary," provides essential engineering guidelines for ensuring environmental concrete structures withstand seismic forces, focusing on impulsive and convective hydrodynamic loads. This foundational document covers seismic design requirements, dynamic analysis for liquid-structure interaction, and detailed reinforcement standards to prevent leakage and ensure structural integrity during earthquakes. For detailed technical specifications, access the document at Scribd. Seismic Optimization of Elevated Water Tanks | PDF - Scribd
ACI 350.3-06 is a standard titled "Seismic Design of Liquid-Containing Concrete Structures and Commentary." It is a critical document produced by the American Concrete Institute (ACI) for civil and structural engineers designing water treatment plants, reservoirs, tanks, and other liquid-containing structures. The Engineer’s Guide to ACI-350
Here is a comprehensive guide to understanding and applying ACI 350.3-06.
While the ACI 350.3-06.pdf is technically a "historical document" since the release of the 2020 edition, it remains a vital tool for the engineering community.
If you are maintaining old infrastructure, it is indispensable. If you are learning, the 2006 edition provides the foundational logic of hydrodynamic seismic design with less complexity than the newest iteration. If you need a summary
Final recommendation: Search for the document by its full name on the official ACI website. If you only need the 2006 edition for legacy work, purchase the official PDF there. If you are starting a new project, buy the 2020 edition—but study the 2006 edition first to understand the evolution of the code.
Always consult a licensed structural engineer for specific seismic design. This article is for informational purposes regarding the standard itself and does not constitute professional engineering advice.
While this article focuses on the -06 edition, it would be incomplete without mentioning that ACI released 350.3-20 in 2020. The newer edition aligns with ASCE 7-16 and introduces important changes:
Nevertheless, if your project permit was issued before 2015, the reviewing authority likely expects compliance with the -06 edition. Always check the adopted building code of your jurisdiction.