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Section 4.1
Pressure Computations
Last Revised: 11/04/2014
Loads computed from soil and/or hydrostatic pressure are designated as "H" in the load combination equations.
ASCE 7-05 3.2 treats both lateral soil loads and hydrostatic pressure similarly. Both increase linearly with depth according to the equation
lateral pressure at h = g h
Where:
- g = Equivalent Fluid Density (62.4 pcf for water; from ASCE 7-05 Table 3-1 for soils) and
- h = the depth
For water, you must also consider the upward buoyancy force, gw hwmax, as well (see ASCE 7-05 3.2.2).
Figure 4.1.1 illustrates the application of the loads.
Figure 4.1.1
Soil Loads & Hydrostatic Pressure
