Aci-350.3-06.pdf

For tanks with interior decks or baffle walls, the code specifies how to transfer seismic forces through the concrete diaphragm to the lateral force-resisting system.

ACI 350.3-06 provides specific requirements for the earthquake-resistant design of concrete liquid-containing structures. While general building seismic codes (like ASCE 7 or the International Building Code) focus on occupant safety, ACI 350.3 focuses on containment.

Key Objectives:

Assuming "ACI-350.3-06.pdf" refers to a specific ACI publication, let's consider what ACI 350 series documents typically cover. The ACI 350 series focuses on the design and construction of reinforced concrete structures for containment of liquids and other types of tanks. ACI-350.3-06.pdf

To understand ACI-350.3-06, one must first understand the "ACI 350" family. While ACI 318 controls general building construction, ACI 350 governs Environmental Engineering Concrete Structures. These include structures that handle liquids with high potential for environmental damage if leaked—specifically potable water, sewage, and industrial chemicals.

ACI 350 splits into several parts:

The ".3" identifier is crucial. It deals exclusively with earthquake loading. The "-06" suffix indicates the 2006 edition of the standard. For tanks with interior decks or baffle walls,

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.

The paper introduces a fundamental concept for liquid storage: liquids move differently than solids. The "

The 2006 standard provides formulas to calculate the combined mass of these two components based on tank geometry (height to radius ratio).

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.

This paper presents a step-by-step seismic analysis of a reinforced concrete rectangular water tank, following the provisions of ACI 350.3-06. The structure is located in Seismic Design Category D. Impulsive and convective (sloshing) components of hydrodynamic pressure are computed. Results are compared with general finite element modeling. The analysis demonstrates that ACI 350.3-06 provides a practical yet conservative method for determining seismic forces on tank walls and base shear.