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. 10 mm .36 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 the maximum allow- able normal and shearing stresses in the directions respectively normal and tangential to the weld are o = 60 MPa and r = the magnitude P of the largest axial force that can be applied to the pipe. Weld -20° 36 MPa, determine 37 The horizontal link BC is in. thick, has a width w = is made of a steel with a 65-ksi ultimate strength in tension. What is the factor of safety if the structure shown is designed to support a load of P = 10 kips? 1.25 in., and Fig. P1.35 and P1.36