[ P_u = 1.25(DC) + 1.35(EV) + 1.75(LL+IM) ]

Concentrated vehicular loads (e.g., AASHTO HS-20 or IRC Class AA) applied to the top slab. 3. Key Design Formulas and Calculations

), and the thickness of the top slab, bottom slab, and sidewalls. www.humes.com.au 2. Hydraulic Design Calculations

Maximum lateral earth pressure from the outside with no internal water to resist it.