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To design a cantilevered truss to support the loads shown in the figures, two layouts are proposed as shown in Figs. A and B. All truss members are steel with allowable stress of 20ksi. (a) Determine the minimum cross section area needed for both layouts to prevent buckling (Pcr = p2EI/l2) for the truss with the minimum total weight by using a circular cross section. (b) Which layout has the minimum total weight?
Natur e of Distribution of Bending Stress Figure Nature of stress distribution in section of a beam It will be proved that bending stress at any layer of section o
The Center Mark Command We can use Center Mark command to annotate a circle or an arc with a cross at the center.Illustration above shows a center mark added to a circle quick
A helical compression spring prepared of oil tempered carbon steel, is subjected to a load which goes from 600 N to 1600 N. The spring index is 6 and the design factor of safety is
(a) What do you mean by vibration and the terminology used in it to be defined? (b) A body is subjected to two Harmonic motions as provided below x 1 = 10 sin (wt + π/6) and x
State the types of foundations We saw the different types of foundations commonly adopted for specific situation. In actual practice the situations are not very simple both in
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Determine the maximum torque - shaft: Determine the maximum torque that can be safely transmitted by a shaft of 400 mm diameter, if (a) the maximum allowable shear stress i
#what is porosity in welding is this different from pin hole
Explain in detail about the Large excavations Large excavations required for construction of rafts may need dewatering, depending on the ground water flow and the choice of a
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