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Find the internal bending moment, Mc

You shall have tried yourself. The figure below will refresh your memory of what have learned at school. Now, just for the sake of fun, work out this problem from the free end towards point "C&...
r13's user avatar
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why are horizontal and vertical stresses on an element in soil mass considered as principal stresses?

These are not principal stresses in the element. In my opinion this is simply a way of conveniently showing the stresses applied on the element, but not necessarily the principal ones (remember a ...
upstream's user avatar
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Understanding forces acting on solids

No matter how small it is, the contact Force is always acting over/on a finite area that produces stresses. However, depending on the purpose of computation, and the scale of the matters, we can let ...
r13's user avatar
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Shear Wall placement -- reflectionally symmetric or rotationally symmetric?

I would consider placing the shear walls in a way that provided an almost even strength against any earthquake direction. This means The shear walls are radially almost evenly set around the center of ...
kamran's user avatar
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Infinite Solution in Truss Problem by Method of Sections

From global equilibrium, solve $R_1$. $\Sigma M_3 = 0$ $12R_1 - 0.707F_{68}*6 - 0.707F_{68}*6 -50*6 = 0$, solve $F_{68}$ $\Sigma F_x = 0$ $0.707F_{68} + 0.707F_{37} + F_{34} = 0$ -----(1), $F_{68}$ = ...
r13's user avatar
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Does the speed of Heavy Vehicles make more potholes

For what its worth our (Asutralian) asphalt test tracks fail by weathering because they don't get enough traffic. Water seeps in among the stones and spoils the bond between the bitumen and the stones,...
Greg Locock's user avatar
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Does the speed of Heavy Vehicles make more potholes

Bitumen is a viscoelastic material and the time/duration that force is exerted on it is directly proportional to the fatigue of the material. Simply put, low speed causes more damage to the bitumen ...
Anshul's user avatar
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