StormPrismEQ is a precast modular storm water detention system designed to meet ACI 350.3 and ACI 318-14. The system is highly versatile, with the ability to adjust floor, roof and wall thicknesses based on project-specific requirements. The modules come in an 8-ft by 16-ft footprint, and can be stacked with an internal height of 14 ft and an internal void ratio of up to 97%.