Domed Slab Profile for Stormwater Chamber Load Distribution

The patent applies curvature by transitioning from a flat slab to a domed slab configuration. The dome shape allows the slab to arch under load, converting tensile stresses into compressive stresses that the plastic material can better withstand. This curvature enables the slab to span between columns without experiencing significant tension, thereby preventing cracking and extending service life while maintaining constructability.

The domed configuration provides inherent structural stability through its curved geometry. The dome shape distributes loads across the entire surface area, preventing stress concentration at thin vertical elements. This curvature creates a stable, buckling-resistant structure that maintains integrity even with reduced material thickness, as the arching action naturally reinforces the thin elements against lateral buckling.

The domed slab configuration increases the distance between columns and slab edges compared to a flat slab, as the dome rises vertically between column supports. This arching geometry provides natural shear reinforcement, distributing column loads through compressive arch action rather than direct shear. The curved profile creates a more favorable load path that prevents punching shear failure while maximizing the chamber volume between columns.

The dome shape is a simple, well-understood geometric form that can be manufactured using standard extrusion or molding processes for plastic materials. The curvature ratio and profile can be optimized to achieve the desired load reduction while maintaining manufacturability. The domed configuration leverages basic arch principles that are intuitive to work with in fabrication, requiring minimal geometric complexity beyond the fundamental curved profile.