Problem 1.35 A steel pipe of 400-mm outer diameter is fabricated from 10-mm-thick plate by welding along a helix that forms an angle of 20° with a plane perpendicular to the axis of the pipe. Knowing that a 300-kN axial force P is applied to the pipe, determine the normal and shearing stresses in directions respectively normal and tangential to the weld.


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Technician A says that the FMCSA is aiming to make electronic onboard recorders (EOBRs) mandatory in all vehicles put into service from MY 2016 onward.  Technician B says that the FMCSA can currently mandate the installation of an EOBR into a vehicle when its driver is cited for a 10% over HOS infraction. Who is correct?

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How is a cracked drum serviced?

What will be an ideal response?

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