Elements of mechanics: for the use of colleges, academies, and high schools (1859)
Peck, William G. (William Guy), 1820-1892 · New York, A. S. Barnes & Burr · leaf 93
of the wall be equal to whVx. The force --=- acts with an arm of lever ti to overturn the2h wall about its lower and outer edge ; this force is resisted bythe weight w + wtilx, acting through the centre of gravityof the wall with a lever arm equal to \x. If there is anequilibrium, the moments of… … 7. A sustaining wall has a cross section in the form of atrapezoid, the face upon which thepressure is thrown being vertical, andthe opposite face having a slope ofsix perpendicular to one horizontal.Required the least thickness that mustbe given to the wall at the top, thatit may not be overturned…
Mechanics
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