Engineers designing conventional rectangular reinforced concrete Liquid Containing Structures (LCS) often rely on the Portland Cement Association's (PCA) publication, "Rectangular Concrete Tanks", to analyze two-way panels. Several scenarios are not included in the publication that would benefit designers. This article expands on the scenarios presented in PCA's publication. In lieu of printed tables, an excel database application has been developed to publish desired tables. Designers often encounter partially filled panels, where contained fluid is below the propped support. In addition, designers may want to check shear at a critical section following ACI 350-06 "Code Requirements for Environmental Engineering Concrete Structures ". The out-of-plane forces and displacements have been determined using finite element software, and converted to non-dimensional coefficients in an Excel database. The coefficient tables are automatically generated in a similar format as the PCA publication. These tables are very useful for designers because LCS walls response can be obtained without finite element analysis. Discussion of the formulation is presented, including relevant finite element model information. Also, an example is presented using the tables in accordance with ACI 350-06.
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