what are ehe assumptions here please? i can’t find a decent example on this. 1. weight of the earth is 30#/(vertical) foot? 2. width of the force triangle is the height of the retaining wall x 30#\’? what is the UNITS of this equation? it is feet times pounds per foot? doesn’t this end up being a width in pounds? 3. overturning moment is 1/3H x Force (which is also the “value” of the area triangle? so you end up with foot pounds? am i missing anything?
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