Below Grade Vaults for Secondary URD
Thermodynamics’ vault concept combines elements of design, material and process developed from computer modeling and detailed Finite Element Analysis (FEA) of structure and stress. After initial computer modeling proved the innovative convex concept, the detailed FEA validated that the linear medium density polyethylene would optimize both toughness and underground support as a buried vault, provide UV8 stability and UL-HB94 fire resistance rating.
The FEA in Model 1 of the TEVC vault shows a reflection of less than 0.25” (indicated by red) on the wall when buried and a linear hydrostatic force of .0.97 psi at the base to 0.32” at the top, equivalent to the forces of compacted soil. In fact the design and materials allow the vault to flex under load – not crack or break.