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For simplicity, the examples in Dead Load Completely Counteracts Overturning and Dead Load Does Not Completely Counteract Overturning do not consider the effect of wind uplift loads, or hold-down or compression forces transferred from the level above or from neighboring openings. The following explains how these factors are considered, without getting into detailed calculations.
Dead Load Does not Completely Counteract Overturning
The program does an initial calculation which concentrates both dead load and wind uplift load at the wall ends. If that the dead load is not sufficient to counteract the overturning force plus the wind uplift force, then all force components are concentrated at the end, there is a net tension force at the tension end and the wind uplift force serves to reduce the compression force at the compression end.
Note that the calculation of the overturning force includes shear forces from levels above the wall transferred to the level in question, and that the overturning, dead and wind uplift components of the hold-down force on the level above are included in the calculation, and the dead and wind uplift load includes loads transferred as line loads from levels above using the process described herein. Any force transferred from openings adjacent to the wall segment is also included.
Dead Load Completely Counteracts Overturning
If the dead load completely counteracts the overturning force plus the wind uplift force, then the program transfers the wind uplift load load down to the level below as a line load, as it cannot be assumed to be be concentrated at the end supports for a non-rotating element.
Forces from Levels Above and Adjacent Openings are Sufficient
The program then checks to see if he the dead hold-down force coming in from the levels above or from over adjacent openings is enough to completely counteract overturning plus wind uplift load concentrated at the end. If it is, the entire dead load on the wall is transferred as a line load to the level below. The net force at the tension end is in this case a compression force, that is, the excess dead force from the levels above or adjacent openings beyond what is needed to counteract overturning.
Dead Load on Wall Required to Completely Resist Overturning
If the dead forces from the levels above or adjacent openings are not sufficient to completely resist overturning, the program calculates how much dead load over the wall is needed. That dead load is assumed to concentrate as a force at the end of the wall, and the rest is passed through as a line load to the bottom.
Compression End Force
For both of these scenarios, the compression end is subject to twice the overturning force, as described in Dead Load Completely Counteracts Overturning plus all force contributions from levels above and from adjacent openings.