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--- wiki:sns:intactgh:surface_loads [2023/08/15 08:23] – eli
+++ wiki:sns:intactgh:surface_loads [2024/08/21 09:07] (current) – [Pressure] goldy
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-A "Pressure" load is a surface load specified in terms of force per unit area. Positive pressures push into the surface, negative pressure pull.
+A "Pressure" load is a surface load specified in terms of force per unit area that is normal to the surface. Positive pressures push into the surface, negative pressure pull.
 A Pressure Load requires two inputs:
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+===== Hydrostatic Load =====
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+A “Hydrostatic” load is a spatially varying pressure as experienced by the walls of a pool due to the weight of the water pressing against them. The pressure at any point depends on the density of the water, increasing from a value of zero at the water surface to a maximum at the deepest point.
+A Hydrostatic load requires three inputs:
+  * the geometry of the surfaces where the load is applied
+  * a point on the surface of the fluid (fluid depth is assumed in the -Z direction)
+  * specific gravity of the fluid (dimensionless, SG = 1 for water)
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+{{ :wiki:sns:intactgh:hydrostatic_load_block.png?200 }}
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