You might ask: Why focus on the 2006 version when newer editions exist (ACI 350.3-20)?
: For liquid-containing structures, special considerations might include leakage control, watertightness, and performance under seismic loading. ACI-350.3-06.pdf
If you are designing a new structure today, you should purchase the current version (ACI 350.3-20). Using the 2006 draft for new construction creates liability risks regarding building code compliance. You might ask: Why focus on the 2006
Unlike static water pressure (triangle shape), seismic pressure creates an inverted trapezoid or a more complex curve. The PDF contains lookup tables and coefficients to redraw those pressure diagrams for concrete design. special considerations might include leakage control